{"id":70023,"date":"2026-02-01T13:25:09","date_gmt":"2026-02-01T05:25:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/70023.html"},"modified":"2026-02-01T13:25:09","modified_gmt":"2026-02-01T05:25:09","slug":"%e5%be%ae%e4%bf%a1%e5%b0%8f%e7%a8%8b%e5%ba%8f%e5%bc%80%e5%8f%91%e5%b2%97%e5%89%8d%e7%ab%af%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%88%e5%90%ab%e7%ad%94%e6%a1%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/70023.html","title":{"rendered":"\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u5c97\u524d\u7aef\u9762\u8bd5\u9898\uff08\u542b\u7b54\u6848\uff09"},"content":{"rendered":"<h2>\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u5c97\u524d\u7aef\u9762\u8bd5\u9898&#xff08;\u542b\u7b54\u6848&#xff09;<\/h2>\n<h3>\u4e00\u3001CSS\u6838\u5fc3\u77e5\u8bc6\u70b9<\/h3>\n<h4>1. \u7f51\u9875\u5e03\u5c40\u65b9\u5f0f<\/h4>\n<p>\u7b54\u6848&#xff1a; \u5e38\u89c1\u5e03\u5c40\u65b9\u5f0f\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u6d41\u5f0f\u5e03\u5c40&#xff08;\u767e\u5206\u6bd4\u5e03\u5c40&#xff09;&#xff1a;\u5bbd\u5ea6\u7528\u767e\u5206\u6bd4&#xff0c;\u9002\u914d\u4e0d\u540c\u5c4f\u5e55&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u57fa\u7840\u9002\u914d\u65b9\u6848&#xff1b;<\/li>\n<li>\u6d6e\u52a8\u5e03\u5c40&#xff08;float&#xff09;&#xff1a;\u901a\u8fc7float: left\/right &#043; \u6e05\u9664\u6d6e\u52a8\u5b9e\u73b0\u591a\u5217\u5e03\u5c40&#xff0c;\u9700\u6ce8\u610fBFC\u6e05\u9664\u6d6e\u52a8&#xff1b;<\/li>\n<li>\u5b9a\u4f4d\u5e03\u5c40&#xff08;position&#xff09;&#xff1a;absolute\/fixed\/relative\/sticky&#xff0c;\u9002\u5408\u5c40\u90e8\u7cbe\u51c6\u5b9a\u4f4d&#xff1b;<\/li>\n<li>Flex\u5f39\u6027\u5e03\u5c40&#xff1a;\u5c0f\u7a0b\u5e8f\u4e3b\u6d41\u5e03\u5c40\u65b9\u5f0f&#xff0c;\u4e00\u7ef4\u5e03\u5c40&#xff0c;\u7075\u6d3b\u9002\u914d\u591a\u7aef&#xff1b;<\/li>\n<li>Grid\u7f51\u683c\u5e03\u5c40&#xff1a;\u4e8c\u7ef4\u5e03\u5c40&#xff0c;\u9002\u5408\u590d\u6742\u6805\u683c\u573a\u666f&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u4e5f\u53ef\u4f7f\u7528&#xff09;&#xff1b;<\/li>\n<li>\u54cd\u5e94\u5f0f\u5e03\u5c40&#xff1a;\u7ed3\u5408\u5a92\u4f53\u67e5\u8be2&#064;media&#xff0c;\u9002\u914d\u4e0d\u540c\u8bbe\u5907\u5c3a\u5bf8\u3002<\/li>\n<\/ul>\n<h4>2. BFC\u4ec0\u4e48\u662fBFC&#xff1f;\u4ec0\u4e48\u6761\u4ef6\u4e0b\u89e6\u53d1BFC&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>BFC\u5b9a\u4e49&#xff1a;\u5757\u7ea7\u683c\u5f0f\u5316\u4e0a\u4e0b\u6587&#xff08;Block Formatting Context&#xff09;&#xff0c;\u662fCSS\u7684\u6e32\u67d3\u89c4\u5219&#xff0c;\u521b\u5efaBFC\u7684\u5143\u7d20\u4f1a\u5f62\u6210\u72ec\u7acb\u6e32\u67d3\u533a\u57df&#xff0c;\u5185\u90e8\u5143\u7d20\u5e03\u5c40\u4e0d\u53d7\u5916\u90e8\u5f71\u54cd&#xff0c;\u4e5f\u4e0d\u5f71\u54cd\u5916\u90e8\u5143\u7d20\u3002<\/li>\n<li>\u6838\u5fc3\u4f5c\u7528&#xff1a;\u6e05\u9664\u6d6e\u52a8\u3001\u89e3\u51b3margin\u91cd\u53e0\u3001\u907f\u514d\u5143\u7d20\u88ab\u6d6e\u52a8\u5143\u7d20\u8986\u76d6\u3002<\/li>\n<li>\u89e6\u53d1\u6761\u4ef6&#xff08;\u6ee1\u8db3\u5176\u4e00\u5373\u53ef&#xff09;&#xff1a;\n<li>\u6839\u5143\u7d20&#xff08;&lt;html&gt;&#xff09;&#xff1b;<\/li>\n<li>\u6d6e\u52a8\u5143\u7d20&#xff08;float\u4e0d\u4e3anone&#xff09;&#xff1b;<\/li>\n<li>\u5b9a\u4f4d\u5143\u7d20&#xff08;position\u4e3aabsolute\/fixed&#xff09;&#xff1b;<\/li>\n<li>\u884c\u5185\u5757\u5143\u7d20&#xff08;display: inline-block&#xff09;&#xff1b;<\/li>\n<li>\u5f39\u6027\/\u7f51\u683c\u5bb9\u5668&#xff08;display: flex\/grid&#xff09;&#xff1b;<\/li>\n<li>\u6ea2\u51fa\u5143\u7d20&#xff08;overflow\u4e0d\u4e3avisible&#xff0c;\u5982hidden\/auto\/scroll&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528\u6b64\u65b9\u5f0f\u521b\u5efaBFC&#xff09;\u3002<\/li>\n<\/li>\n<\/ul>\n<h4>3. Flex\u5e03\u5c40&#xff1a;flex&#061;1\u7684\u542b\u4e49\u53caflex\u5c5e\u6027&#xff08;flex\u662f\u54ea\u4e9b\u5c5e\u6027\u7684\u7b80\u5199&#xff09;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>flex\u5c5e\u6027&#xff1a;\u662fflex-grow&#xff08;\u653e\u5927\u6bd4\u4f8b&#xff09;\u3001flex-shrink&#xff08;\u7f29\u5c0f\u6bd4\u4f8b&#xff09;\u3001flex-basis&#xff08;\u57fa\u51c6\u5c3a\u5bf8&#xff09;\u7684\u7b80\u5199&#xff0c;\u9ed8\u8ba4\u503c0 1 auto\u3002<\/li>\n<li>flex:1&#xff1a;\u7b49\u4ef7\u4e8eflex: 1 1 0%&#xff0c;\u542b\u4e49&#xff1a;\n<li>flex-grow: 1&#xff1a;\u5269\u4f59\u7a7a\u95f4\u6309\u6bd4\u4f8b\u5206\u914d\u7ed9\u8be5\u5143\u7d20&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u201c\u81ea\u9002\u5e94\u5360\u6ee1\u5269\u4f59\u5bbd\u5ea6\u201d\u6838\u5fc3&#xff09;&#xff1b;<\/li>\n<li>flex-shrink: 1&#xff1a;\u7a7a\u95f4\u4e0d\u8db3\u65f6\u8be5\u5143\u7d20\u4f1a\u7b49\u6bd4\u4f8b\u7f29\u5c0f&#xff1b;<\/li>\n<li>flex-basis: 0%&#xff1a;\u5143\u7d20\u57fa\u51c6\u5bbd\u5ea6\u4e3a0&#xff0c;\u5bbd\u5ea6\u5b8c\u5168\u7531flex-grow\u51b3\u5b9a\u3002<\/li>\n<\/li>\n<li>\u8865\u5145&#xff1a;Flex\u5e03\u5c40\u662f\u5c0f\u7a0b\u5e8f\u9ed8\u8ba4\u63a8\u8350\u5e03\u5c40&#xff0c;\u7236\u5bb9\u5668\u8bbedisplay: flex\u540e&#xff0c;\u5b50\u5143\u7d20\u53ef\u901a\u8fc7flex\u5c5e\u6027\u5b9e\u73b0\u7075\u6d3b\u9002\u914d&#xff08;\u5982\u5de6\u4fa7\u56fa\u5b9a\u3001\u53f3\u4fa7\u81ea\u9002\u5e94&#xff09;\u3002<\/li>\n<\/ul>\n<h4>4. \u76d2\u5b50\u6a21\u578b&#xff1a;\u6807\u51c6\u76d2\u5b50\u6a21\u578b\u548c\u602a\u5f02\u76d2\u5b50\u6a21\u578b<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u6838\u5fc3\u533a\u522b&#xff1a;\u5bbd\u9ad8\u7684\u8ba1\u7b97\u8303\u56f4\u4e0d\u540c&#xff08;\u901a\u8fc7box-sizing\u63a7\u5236&#xff09;&#xff1b;<\/li>\n<li>\u6807\u51c6\u76d2\u5b50\u6a21\u578b&#xff08;content-box&#xff09;&#xff1a;\n<ul>\n<li>\u9ed8\u8ba4\u503c&#xff0c;\u5bbd\u9ad8 &#061; \u5185\u5bb9&#xff08;content&#xff09;\u5bbd\u9ad8&#xff0c;padding\u3001border\u4f1a\u989d\u5916\u589e\u52a0\u5143\u7d20\u603b\u5c3a\u5bf8&#xff1b;<\/li>\n<li>\u4f8b&#xff1a;width: 100px; padding: 10px \u2192 \u5b9e\u9645\u5bbd\u5ea6&#061;120px&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u602a\u5f02\u76d2\u5b50\u6a21\u578b&#xff08;border-box&#xff09;&#xff1a;\n<ul>\n<li>\u5bbd\u9ad8 &#061; content &#043; padding &#043; border&#xff0c;padding\u548cborder\u4e0d\u4f1a\u8d85\u51fa\u8bbe\u5b9a\u7684\u5bbd\u9ad8&#xff1b;<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u4e2d\u63a8\u8350\u4f7f\u7528&#xff08;\u53ef\u5168\u5c40\u8bbe\u7f6ebox-sizing: border-box&#xff09;&#xff0c;\u65b9\u4fbf\u7cbe\u51c6\u63a7\u5236\u5143\u7d20\u5c3a\u5bf8\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>5. \u5143\u7d20\u9690\u85cf\u7684\u65b9\u6cd5&#xff08;\u542bCSS\u9690\u85cf\u5c5e\u6027\u3001v-if\u548cv-show\u7684\u533a\u522b&#xff09;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;CSS\u9690\u85cf\u5143\u7d20\u7684\u65b9\u6cd5&#xff1a;<\/h5>\n<table>\n<tr>\u65b9\u6cd5\u662f\u5426\u5360\u7a7a\u95f4\u662f\u5426\u53ef\u4ea4\u4e92\u9002\u7528\u573a\u666f<\/tr>\n<tbody>\n<tr>\n<td>display: none<\/td>\n<td>\u5426<\/td>\n<td>\u5426<\/td>\n<td>\u5b8c\u5168\u9690\u85cf&#xff0c;\u4e0d\u5360\u5e03\u5c40\u7a7a\u95f4<\/td>\n<\/tr>\n<tr>\n<td>visibility: hidden<\/td>\n<td>\u662f<\/td>\n<td>\u5426<\/td>\n<td>\u9690\u85cf\u4f46\u4fdd\u7559\u4f4d\u7f6e&#xff0c;\u9002\u5408\u4e34\u65f6\u9690\u85cf<\/td>\n<\/tr>\n<tr>\n<td>opacity: 0<\/td>\n<td>\u662f<\/td>\n<td>\u662f<\/td>\n<td>\u89c6\u89c9\u9690\u85cf&#xff0c;\u5143\u7d20\u4ecd\u53ef\u70b9\u51fb&#xff08;\u5982\u5c0f\u7a0b\u5e8f\u906e\u7f69\u5c42&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>position: absolute; left: -9999px<\/td>\n<td>\u5426&#xff08;\u8131\u79bb\u6587\u6863\u6d41&#xff09;<\/td>\n<td>\u5426<\/td>\n<td>\u9690\u85cf\u4e14\u4e0d\u5f71\u54cd\u5e03\u5c40<\/td>\n<\/tr>\n<tr>\n<td>height: 0; overflow: hidden<\/td>\n<td>\u5426<\/td>\n<td>\u5426<\/td>\n<td>\u9690\u85cf\u5185\u5bb9&#xff0c;\u4fdd\u7559\u5143\u7d20\u672c\u8eab<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>&#xff08;2&#xff09;v-if vs v-show&#xff08;Vue\/\u5c0f\u7a0b\u5e8fVue\u6846\u67b6&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>v-if&#xff1a;\n<ul>\n<li>\u539f\u7406&#xff1a;\u52a8\u6001\u521b\u5efa\/\u9500\u6bc1DOM\u5143\u7d20&#xff1b;<\/li>\n<li>\u7279\u70b9&#xff1a;\u521d\u59cb\u6e32\u67d3\u5f00\u9500\u5927&#xff0c;\u5207\u6362\u5f00\u9500\u5927&#xff0c;\u9690\u85cf\u65f6\u4e0d\u5360DOM\u7ed3\u6784&#xff1b;<\/li>\n<li>\u9002\u7528&#xff1a;\u6761\u4ef6\u4e0d\u9891\u7e41\u5207\u6362&#xff08;\u5982\u6743\u9650\u63a7\u5236&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>v-show&#xff1a;\n<ul>\n<li>\u539f\u7406&#xff1a;\u901a\u8fc7display: none\u63a7\u5236\u663e\u793a\/\u9690\u85cf&#xff0c;DOM\u59cb\u7ec8\u5b58\u5728&#xff1b;<\/li>\n<li>\u7279\u70b9&#xff1a;\u521d\u59cb\u6e32\u67d3\u5f00\u9500\u5c0f&#xff0c;\u5207\u6362\u5f00\u9500\u5c0f&#xff0c;\u9690\u85cf\u65f6\u5360\u7a7a\u95f4&#xff1b;<\/li>\n<li>\u9002\u7528&#xff1a;\u6761\u4ef6\u9891\u7e41\u5207\u6362&#xff08;\u5982\u5c0f\u7a0b\u5e8ftab\u5207\u6362&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u539f\u751f&#xff1a;\u5bf9\u5e94wx:if&#xff08;\u540cv-if&#xff09;\u3001hidden&#xff08;\u540cv-show&#xff09;\u3002<\/li>\n<\/ul>\n<h4>6. \u76d2\u5b50\u5c45\u4e2d\u65b9\u5f0f&#xff08;\u91cd\u70b9&#xff1a;\u6c34\u5e73\u5782\u76f4\u5c45\u4e2d&#xff09;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;\u6c34\u5e73\u5c45\u4e2d&#xff1a;<\/h5>\n<ul>\n<li>\u884c\u5185\u5143\u7d20&#xff1a;\u7236\u5143\u7d20\u8bbetext-align: center&#xff1b;<\/li>\n<li>\u5757\u7ea7\u5143\u7d20&#xff1a;margin: 0 auto&#xff08;\u9700\u8bbe\u7f6e\u5bbd\u5ea6&#xff09;&#xff1b;<\/li>\n<li>Flex\u5e03\u5c40&#xff1a;\u7236\u5143\u7d20display: flex; justify-content: center\u3002<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u5782\u76f4\u5c45\u4e2d&#xff1a;<\/h5>\n<ul>\n<li>\u884c\u5185\u5143\u7d20&#xff1a;line-height &#061; \u7236\u5143\u7d20\u9ad8\u5ea6&#xff08;\u5355\u884c\u6587\u672c&#xff09;&#xff1b;<\/li>\n<li>Flex\u5e03\u5c40&#xff1a;\u7236\u5143\u7d20display: flex; align-items: center&#xff1b;<\/li>\n<li>\u5b9a\u4f4d&#043;transform&#xff1a;<span class=\"token selector\">.parent<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token property\">position<\/span><span class=\"token punctuation\">:<\/span> relative<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.child<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">position<\/span><span class=\"token punctuation\">:<\/span> absolute<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">top<\/span><span class=\"token punctuation\">:<\/span> 50%<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">transform<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token function\">translateY<\/span><span class=\"token punctuation\">(<\/span>-50%<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;\u6c34\u5e73\u5782\u76f4\u5c45\u4e2d&#xff08;\u5c0f\u7a0b\u5e8f\u9ad8\u9891&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u65b9\u68481&#xff08;Flex&#xff0c;\u63a8\u8350&#xff09;&#xff1a;<span class=\"token selector\">.parent<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">display<\/span><span class=\"token punctuation\">:<\/span> flex<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">justify-content<\/span><span class=\"token punctuation\">:<\/span> center<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">align-items<\/span><span class=\"token punctuation\">:<\/span> center<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\u65b9\u68482&#xff08;\u5b9a\u4f4d&#043;transform&#xff09;&#xff1a;<span class=\"token selector\">.parent<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token property\">position<\/span><span class=\"token punctuation\">:<\/span> relative<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.child<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">position<\/span><span class=\"token punctuation\">:<\/span> absolute<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">top<\/span><span class=\"token punctuation\">:<\/span> 50%<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">left<\/span><span class=\"token punctuation\">:<\/span> 50%<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">transform<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token function\">translate<\/span><span class=\"token punctuation\">(<\/span>-50%<span class=\"token punctuation\">,<\/span> -50%<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\u65b9\u68483&#xff08;Grid&#xff09;&#xff1a;parent { display: grid; place-items: center; }\u3002<\/li>\n<\/ul>\n<h4>7. \u5b9a\u4f4d\u65b9\u5f0f\u53ca\u5bf9\u5e94\u7684CSS\u5c5e\u6027<\/h4>\n<p>\u7b54\u6848&#xff1a; CSS\u5b9a\u4f4d\u5c5e\u6027\u4e3aposition&#xff0c;\u51714\u79cd\u6838\u5fc3\u503c&#xff1a;<\/p>\n<ul>\n<li>static&#xff1a;\u9ed8\u8ba4\u503c&#xff0c;\u9759\u6001\u5b9a\u4f4d&#xff0c;\u9075\u5faa\u6b63\u5e38\u6587\u6863\u6d41&#xff0c;top\/left\u7b49\u5c5e\u6027\u65e0\u6548&#xff1b;<\/li>\n<li>relative&#xff1a;\u76f8\u5bf9\u5b9a\u4f4d&#xff0c;\u76f8\u5bf9\u4e8e\u81ea\u8eab\u539f\u4f4d\u7f6e\u504f\u79fb&#xff0c;\u4ecd\u5360\u6587\u6863\u6d41\u7a7a\u95f4&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528\u4e8e\u4f5c\u4e3a\u7edd\u5bf9\u5b9a\u4f4d\u7684\u7236\u5bb9\u5668&#xff09;&#xff1b;<\/li>\n<li>absolute&#xff1a;\u7edd\u5bf9\u5b9a\u4f4d&#xff0c;\u76f8\u5bf9\u4e8e\u6700\u8fd1\u7684\u5df2\u5b9a\u4f4d&#xff08;\u975estatic&#xff09;\u7956\u5148\u5143\u7d20\u504f\u79fb&#xff0c;\u8131\u79bb\u6587\u6863\u6d41&#xff1b;<\/li>\n<li>fixed&#xff1a;\u56fa\u5b9a\u5b9a\u4f4d&#xff0c;\u76f8\u5bf9\u4e8e\u89c6\u53e3\u504f\u79fb&#xff0c;\u8131\u79bb\u6587\u6863\u6d41&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u6ce8\u610f\u9002\u914d\u624b\u673a\u72b6\u6001\u680f&#xff09;&#xff1b;<\/li>\n<li>\u8865\u5145&#xff1a;sticky&#xff1a;\u7c98\u6027\u5b9a\u4f4d&#xff0c;\u6eda\u52a8\u5230\u9608\u503c\u65f6\u5207\u6362\u4e3afixed&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u90e8\u5206\u573a\u666f\u53ef\u7528\u3002<\/li>\n<\/ul>\n<h4>8. CSS display\u5c5e\u6027\u8be6\u89e3<\/h4>\n<p>\u7b54\u6848&#xff1a; display\u63a7\u5236\u5143\u7d20\u7684\u663e\u793a\u7c7b\u578b&#xff0c;\u6838\u5fc3\u503c&#xff1a;<\/p>\n<ul>\n<li>none&#xff1a;\u9690\u85cf\u5143\u7d20&#xff0c;\u4e0d\u5360\u7a7a\u95f4&#xff08;\u540cv-show\u9690\u85cf\u903b\u8f91&#xff09;&#xff1b;<\/li>\n<li>block&#xff1a;\u5757\u7ea7\u5143\u7d20&#xff0c;\u72ec\u5360\u4e00\u884c&#xff0c;\u53ef\u8bbe\u7f6e\u5bbd\u9ad8&#xff08;\u5982div\/p&#xff09;&#xff1b;<\/li>\n<li>inline&#xff1a;\u884c\u5185\u5143\u7d20&#xff0c;\u4e0d\u72ec\u5360\u4e00\u884c&#xff0c;\u4e0d\u53ef\u8bbe\u7f6e\u5bbd\u9ad8&#xff08;\u5982span\/a&#xff09;&#xff1b;<\/li>\n<li>inline-block&#xff1a;\u884c\u5185\u5757\u5143\u7d20&#xff0c;\u4e0d\u72ec\u5360\u4e00\u884c&#xff0c;\u53ef\u8bbe\u7f6e\u5bbd\u9ad8&#xff08;\u5982\u5c0f\u7a0b\u5e8f\u4e2dbutton\u9ed8\u8ba4&#xff09;&#xff1b;<\/li>\n<li>flex&#xff1a;\u5f39\u6027\u5bb9\u5668&#xff0c;\u5c0f\u7a0b\u5e8f\u4e3b\u6d41\u5e03\u5c40\u65b9\u5f0f&#xff1b;<\/li>\n<li>grid&#xff1a;\u7f51\u683c\u5bb9\u5668&#xff0c;\u4e8c\u7ef4\u5e03\u5c40&#xff1b;<\/li>\n<li>inherit&#xff1a;\u7ee7\u627f\u7236\u5143\u7d20\u7684display\u503c\u3002<\/li>\n<\/ul>\n<h4>9. CSS\u5982\u4f55\u521b\u5efa\u52a8\u753b<\/h4>\n<p>\u7b54\u6848&#xff1a; CSS\u5b9e\u73b0\u52a8\u753b\u67092\u79cd\u65b9\u5f0f&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;transition\u8fc7\u6e21\u52a8\u753b&#xff08;\u7b80\u5355\u52a8\u753b&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u89e6\u53d1\u6761\u4ef6&#xff1a;\u5143\u7d20\u72b6\u6001\u53d8\u5316&#xff08;\u5982hover\u3001\u70b9\u51fb&#xff09;&#xff1b;<\/li>\n<li>\u8bed\u6cd5&#xff1a;transition: \u5c5e\u6027 \u65f6\u957f \u7f13\u52a8\u51fd\u6570 \u5ef6\u8fdf&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff08;\u5c0f\u7a0b\u5e8f\u6309\u94ae\u70b9\u51fb\u52a8\u6548&#xff09;&#xff1a;<span class=\"token selector\">.btn<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">transition<\/span><span class=\"token punctuation\">:<\/span> background-color 0.3s ease<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.btn:active<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">background-color<\/span><span class=\"token punctuation\">:<\/span> #ccc<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;&#064;keyframes\u5173\u952e\u5e27\u52a8\u753b&#xff08;\u590d\u6742\u52a8\u753b&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u81ea\u5b9a\u4e49\u5173\u952e\u5e27&#xff0c;\u63a7\u5236\u52a8\u753b\u5168\u8fc7\u7a0b&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff08;\u5c0f\u7a0b\u5e8f\u52a0\u8f7d\u52a8\u753b&#xff09;&#xff1a;<span class=\"token atrule\"><span class=\"token rule\">&#064;keyframes<\/span> rotate<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token selector\">0%<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token property\">transform<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token function\">rotate<\/span><span class=\"token punctuation\">(<\/span>0deg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token selector\">100%<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token property\">transform<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token function\">rotate<\/span><span class=\"token punctuation\">(<\/span>360deg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.loading<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">animation<\/span><span class=\"token punctuation\">:<\/span> rotate 1s linear infinite<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\u6838\u5fc3\u5c5e\u6027&#xff1a;animation-name&#xff08;\u5173\u952e\u5e27\u540d\u79f0&#xff09;\u3001animation-duration&#xff08;\u65f6\u957f&#xff09;\u3001animation-timing-function&#xff08;\u7f13\u52a8&#xff09;\u3001animation-iteration-count&#xff08;\u5faa\u73af\u6b21\u6570&#xff09;\u3002<\/li>\n<\/ul>\n<h4>10. \u5982\u4f55\u5904\u7406\u5355\u884c\u6587\u672c\u6ea2\u51fa&#xff0c;\u7528\u7701\u7565\u53f7\u663e\u793a<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6838\u5fc3CSS&#xff08;\u5c0f\u7a0b\u5e8f\u9ad8\u9891&#xff0c;\u9700\u8bbe\u7f6e\u5bbd\u5ea6&#xff09;&#xff1a;<\/p>\n<p><span class=\"token selector\">.text-ellipsis<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">width<\/span><span class=\"token punctuation\">:<\/span> 200px<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u5fc5\u987b\u8bbe\u7f6e\u5bbd\u5ea6 *\/<\/span><br \/>\n  <span class=\"token property\">white-space<\/span><span class=\"token punctuation\">:<\/span> nowrap<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u5f3a\u5236\u5355\u884c *\/<\/span><br \/>\n  <span class=\"token property\">overflow<\/span><span class=\"token punctuation\">:<\/span> hidden<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u9690\u85cf\u6ea2\u51fa\u5185\u5bb9 *\/<\/span><br \/>\n  <span class=\"token property\">text-overflow<\/span><span class=\"token punctuation\">:<\/span> ellipsis<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u6ea2\u51fa\u663e\u793a\u7701\u7565\u53f7 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8865\u5145&#xff1a;\u591a\u884c\u6587\u672c\u6ea2\u51fa&#xff08;\u5c0f\u7a0b\u5e8f\u4e5f\u5e38\u7528&#xff09;&#xff1a;<\/p>\n<p><span class=\"token selector\">.text-ellipsis-multi<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">display<\/span><span class=\"token punctuation\">:<\/span> -webkit-box<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">-webkit-line-clamp<\/span><span class=\"token punctuation\">:<\/span> 2<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u663e\u793a2\u884c *\/<\/span><br \/>\n  <span class=\"token property\">-webkit-box-orient<\/span><span class=\"token punctuation\">:<\/span> vertical<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">overflow<\/span><span class=\"token punctuation\">:<\/span> hidden<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">text-overflow<\/span><span class=\"token punctuation\">:<\/span> ellipsis<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>11. \u91cd\u7ed8\u548c\u56de\u6d41&#xff08;\u91cd\u6392&#xff09;<\/h4>\n<h5>&#xff08;1&#xff09;\u5b9a\u4e49\u53ca\u533a\u522b<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u56de\u6d41&#xff08;\u91cd\u6392&#xff09;&#xff1a;DOM\u5143\u7d20\u7684\u51e0\u4f55\u5c5e\u6027&#xff08;\u5bbd\u9ad8\u3001\u4f4d\u7f6e\u3001\u5c3a\u5bf8&#xff09;\u53d8\u5316&#xff0c;\u5bfc\u81f4\u6d4f\u89c8\u5668\u91cd\u65b0\u8ba1\u7b97\u5e03\u5c40&#xff0c;\u89e6\u53d1\u9875\u9762\u91cd\u7ed8&#xff0c;\u6027\u80fd\u5f00\u9500\u5927&#xff1b;<\/li>\n<li>\u91cd\u7ed8&#xff1a;\u5143\u7d20\u6837\u5f0f&#xff08;\u989c\u8272\u3001\u80cc\u666f\u3001\u900f\u660e\u5ea6&#xff09;\u53d8\u5316&#xff0c;\u4e0d\u5f71\u54cd\u51e0\u4f55\u5c5e\u6027&#xff0c;\u4ec5\u91cd\u65b0\u7ed8\u5236\u89c6\u89c9\u6548\u679c&#xff0c;\u6027\u80fd\u5f00\u9500\u5c0f&#xff1b;<\/li>\n<li>\u5173\u7cfb&#xff1a;\u56de\u6d41\u4e00\u5b9a\u4f1a\u89e6\u53d1\u91cd\u7ed8&#xff0c;\u91cd\u7ed8\u4e0d\u4e00\u5b9a\u89e6\u53d1\u56de\u6d41\u3002<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u54ea\u4e9b\u5c5e\u6027\u4fee\u6539\u4f1a\u5f15\u53d1\u91cd\u7ed8\/\u56de\u6d41<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u89e6\u53d1\u56de\u6d41\u7684\u64cd\u4f5c&#xff1a;\n<li>\u6539\u53d8\u5143\u7d20\u5bbd\u9ad8\u3001\u4f4d\u7f6e\u3001\u5c3a\u5bf8&#xff08;\u5982width\u3001height\u3001top&#xff09;&#xff1b;<\/li>\n<li>\u589e\u5220DOM\u5143\u7d20&#xff08;\u5982\u5c0f\u7a0b\u5e8f\u52a8\u6001\u6e32\u67d3\u5217\u8868&#xff09;&#xff1b;<\/li>\n<li>\u7a97\u53e3\u5927\u5c0f\u53d8\u5316&#xff08;\u5982\u624b\u673a\u65cb\u8f6c&#xff09;&#xff1b;<\/li>\n<li>\u8ba1\u7b97offsetWidth\/offsetHeight\u7b49\u5e03\u5c40\u5c5e\u6027&#xff1b;<\/li>\n<li>\u4fee\u6539display\u3001float\u3001position\u7b49\u5c5e\u6027\u3002<\/li>\n<\/li>\n<li>\u89e6\u53d1\u91cd\u7ed8\u7684\u64cd\u4f5c&#xff08;\u4e0d\u89e6\u53d1\u56de\u6d41&#xff09;&#xff1a; \u4fee\u6539color\u3001background\u3001opacity\u3001box-shadow\u3001outline\u7b49\u89c6\u89c9\u5c5e\u6027\u3002<\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;\u5982\u4f55\u907f\u514d\u56de\u6d41<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<li>\u6279\u91cf\u4fee\u6539DOM&#xff1a;\n<ul>\n<li>\u5148\u9690\u85cf\u5143\u7d20&#xff08;display: none&#xff09;&#xff0c;\u4fee\u6539\u540e\u518d\u663e\u793a&#xff1b;<\/li>\n<li>\u4f7f\u7528\u6587\u6863\u788e\u7247&#xff08;DocumentFragment&#xff09;\u6279\u91cf\u6dfb\u52a0DOM&#xff1b;<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u4e2d&#xff1a;\u4e00\u6b21\u6027\u66f4\u65b0data&#xff0c;\u907f\u514d\u9891\u7e41setData&#xff08;\u9ad8\u9891\u8003\u70b9&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u51cf\u5c11\u5e03\u5c40\u67e5\u8be2&#xff1a;\u907f\u514d\u9891\u7e41\u83b7\u53d6offsetWidth\u3001scrollTop\u7b49\u5c5e\u6027&#xff08;\u53ef\u7f13\u5b58\u7ed3\u679c&#xff09;&#xff1b;<\/li>\n<li>\u4f18\u5316CSS&#xff1a;\n<ul>\n<li>\u4f7f\u7528transform&#xff08;\u4ec5\u89e6\u53d1\u5408\u6210\u5c42&#xff0c;\u65e0\u56de\u6d41\/\u91cd\u7ed8&#xff09;\u5b9e\u73b0\u52a8\u753b&#xff08;\u5982translate\u4ee3\u66fftop\/left&#xff09;&#xff1b;<\/li>\n<li>\u907f\u514d\u4f7f\u7528table\u5e03\u5c40&#xff08;\u4fee\u6539\u4e00\u4e2a\u5355\u5143\u683c\u5c31\u89e6\u53d1\u6574\u4e2a\u8868\u683c\u56de\u6d41&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u8131\u79bb\u6587\u6863\u6d41&#xff1a;\u5bf9\u52a8\u753b\u5143\u7d20\u4f7f\u7528absolute\/fixed\u5b9a\u4f4d&#xff0c;\u4f7f\u5176\u4e0d\u5f71\u54cd\u5176\u4ed6\u5143\u7d20\u5e03\u5c40\u3002<\/li>\n<h4>12. \u6837\u5f0f\u51b2\u7a81\u89e3\u51b3\u65b9\u6848<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<li>\u63d0\u9ad8\u9009\u62e9\u5668\u4f18\u5148\u7ea7&#xff1a;\n<ul>\n<li>\u4f18\u5148\u7ea7\u89c4\u5219&#xff1a;!important &gt; \u884c\u5185\u6837\u5f0f &gt; ID\u9009\u62e9\u5668 &gt; \u7c7b\/\u4f2a\u7c7b\/\u5c5e\u6027\u9009\u62e9\u5668 &gt; \u6807\u7b7e\/\u4f2a\u5143\u7d20\u9009\u62e9\u5668 &gt; \u901a\u914d\u7b26&#xff1b;<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u4e2d&#xff1a;\u53ef\u901a\u8fc7::v-deep&#xff08;Vue2&#xff09;\/:deep()&#xff08;Vue3&#xff09;\u7a7f\u900f\u7ec4\u4ef6\u6837\u5f0f\u9694\u79bb&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>CSS\u547d\u540d\u89c4\u8303&#xff1a;\u4f7f\u7528BEM&#xff08;\u5757-\u5143\u7d20-\u4fee\u9970\u7b26&#xff09;\u547d\u540d&#xff0c;\u907f\u514d\u547d\u540d\u51b2\u7a81&#xff08;\u5982btn__text&#8211;active&#xff09;&#xff1b;<\/li>\n<li>\u6837\u5f0f\u9694\u79bb&#xff1a;\n<ul>\n<li>\u5c0f\u7a0b\u5e8f\u539f\u751f&#xff1a;\u7ec4\u4ef6\u5f00\u542fstyleIsolation: &#039;isolated&#039;&#xff08;\u9ed8\u8ba4&#xff09;&#xff0c;\u7ec4\u4ef6\u6837\u5f0f\u4e0d\u5f71\u54cd\u5916\u90e8&#xff1b;<\/li>\n<li>Vue&#xff1a;scoped\u5c5e\u6027&#xff0c;\u6837\u5f0f\u4ec5\u4f5c\u7528\u4e8e\u5f53\u524d\u7ec4\u4ef6&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u91cd\u7f6e\/\u5f52\u4e00\u5316\u6837\u5f0f&#xff1a;\u5f15\u5165reset.css\u6216normalize.css&#xff0c;\u7edf\u4e00\u6d4f\u89c8\u5668\u9ed8\u8ba4\u6837\u5f0f&#xff1b;<\/li>\n<li>\u6309\u9700\u52a0\u8f7d\u6837\u5f0f&#xff1a;\u907f\u514d\u5168\u5c40\u5f15\u5165\u5927\u91cf\u5197\u4f59\u6837\u5f0f&#xff0c;\u6309\u9875\u9762\/\u7ec4\u4ef6\u62c6\u5206\u6837\u5f0f\u6587\u4ef6\u3002<\/li>\n<h4>13. \u7ecf\u5178\u5de6\u53f3\u5e03\u5c40&#xff0c;\u5de6\u4fa7\u56fa\u5b9a&#xff0c;\u53f3\u4fa7\u81ea\u9002\u5e94<\/h4>\n<p>\u7b54\u6848&#xff1a; \u5c0f\u7a0b\u5e8f\u4e2d\u6700\u5e38\u7528\u76842\u79cd\u5b9e\u73b0\u65b9\u5f0f&#xff1a;<\/p>\n<h5>\u65b9\u68481&#xff08;Flex&#xff0c;\u63a8\u8350&#xff09;&#xff1a;<\/h5>\n<p><span class=\"token selector\">.wrapper<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">display<\/span><span class=\"token punctuation\">:<\/span> flex<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">width<\/span><span class=\"token punctuation\">:<\/span> 100%<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.left<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">width<\/span><span class=\"token punctuation\">:<\/span> 200px<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u5de6\u4fa7\u56fa\u5b9a\u5bbd\u5ea6 *\/<\/span><br \/>\n  <span class=\"token property\">flex-shrink<\/span><span class=\"token punctuation\">:<\/span> 0<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u9632\u6b62\u538b\u7f29 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.right<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">flex<\/span><span class=\"token punctuation\">:<\/span> 1<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u53f3\u4fa7\u81ea\u9002\u5e94 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>\u65b9\u68482&#xff08;BFC&#043;\u6d6e\u52a8&#xff09;&#xff1a;<\/h5>\n<p><span class=\"token selector\">.left<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">float<\/span><span class=\"token punctuation\">:<\/span> left<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token property\">width<\/span><span class=\"token punctuation\">:<\/span> 200px<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token selector\">.right<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token property\">overflow<\/span><span class=\"token punctuation\">:<\/span> hidden<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/* \u89e6\u53d1BFC&#xff0c;\u907f\u514d\u88ab\u6d6e\u52a8\u5143\u7d20\u8986\u76d6 *\/<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u4e8c\u3001JavaScript\u6838\u5fc3\u77e5\u8bc6\u70b9<\/h3>\n<h4>1. JS\u6570\u636e\u7c7b\u578b\u6709\u54ea\u4e9b&#xff1f;\u5224\u65ad\u6570\u636e\u7c7b\u578b\u7684\u65b9\u6cd5\u53ca\u533a\u522b&#xff08;\u542b\u7279\u4f8b&#xff09;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;\u6570\u636e\u7c7b\u578b&#xff1a;<\/h5>\n<ul>\n<li>\u57fa\u672c\u7c7b\u578b&#xff08;\u503c\u7c7b\u578b&#xff09;&#xff1a;String\u3001Number\u3001Boolean\u3001Null\u3001Undefined\u3001Symbol&#xff08;ES6&#xff09;\u3001BigInt&#xff08;ES11&#xff09;&#xff1b;<\/li>\n<li>\u5f15\u7528\u7c7b\u578b&#xff1a;Object&#xff08;\u5305\u542bArray\u3001Function\u3001Date\u3001RegExp\u3001\u666e\u901a\u5bf9\u8c61\u7b49&#xff09;\u3002<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u5224\u65ad\u65b9\u6cd5\u53ca\u533a\u522b&#xff1a;<\/h5>\n<table>\n<tr>\u65b9\u6cd5\u539f\u7406\u4f18\u70b9\u7f3a\u70b9<\/tr>\n<tbody>\n<tr>\n<td>typeof<\/td>\n<td>\u68c0\u6d4b\u6570\u636e\u7c7b\u578b\u7684\u5b57\u7b26\u4e32\u8868\u793a<\/td>\n<td>\u7b80\u5355\u5feb\u6377&#xff0c;\u9002\u5408\u57fa\u672c\u7c7b\u578b<\/td>\n<td>1. typeof null &#061;&#061;&#061; &#039;object&#039;&#xff08;\u5386\u53f2bug&#xff09;&#xff1b;2. \u5f15\u7528\u7c7b\u578b\u9664Function\u5916\u5747\u8fd4\u56de\u2019object\u2019<\/td>\n<\/tr>\n<tr>\n<td>instanceof<\/td>\n<td>\u68c0\u6d4b\u539f\u578b\u94fe\u662f\u5426\u5305\u542b\u6784\u9020\u51fd\u6570\u7684prototype<\/td>\n<td>\u53ef\u533a\u5206\u5f15\u7528\u7c7b\u578b&#xff08;\u5982Array\/Object&#xff09;<\/td>\n<td>1. \u65e0\u6cd5\u5224\u65ad\u57fa\u672c\u7c7b\u578b&#xff1b;2. \u53ef\u88ab\u539f\u578b\u94fe\u7be1\u6539&#xff1b;3. \u8de8\u7a97\u53e3\/iframe\u5931\u6548<\/td>\n<\/tr>\n<tr>\n<td>Object.prototype.toString.call()<\/td>\n<td>\u8bfb\u53d6\u5bf9\u8c61\u7684[[Class]]\u5185\u90e8\u5c5e\u6027<\/td>\n<td>\u6700\u51c6\u786e&#xff0c;\u53ef\u533a\u5206\u6240\u6709\u7c7b\u578b<\/td>\n<td>\u5199\u6cd5\u7a0d\u7e41\u7410<\/td>\n<\/tr>\n<tr>\n<td>Array.isArray()<\/td>\n<td>\u4e13\u95e8\u5224\u65ad\u6570\u7ec4<\/td>\n<td>\u7cbe\u51c6\u5224\u65ad\u6570\u7ec4<\/td>\n<td>\u4ec5\u9002\u7528\u4e8e\u6570\u7ec4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>&#xff08;3&#xff09;\u793a\u4f8b&#xff1a;<\/h5>\n<p><span class=\"token keyword\">typeof<\/span> <span class=\"token string\">&#039;123&#039;<\/span> <span class=\"token comment\">\/\/ &#039;string&#039;<\/span><br \/>\n<span class=\"token keyword\">typeof<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token comment\">\/\/ &#039;object&#039;&#xff08;\u7279\u4f8b&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">instanceof<\/span> <span class=\"token class-name\">Array<\/span> <span class=\"token comment\">\/\/ true<\/span><br \/>\n<span class=\"token class-name\">Object<\/span><span class=\"token punctuation\">.<\/span>prototype<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#039;[object Array]&#039;<\/span><br \/>\n<span class=\"token class-name\">Object<\/span><span class=\"token punctuation\">.<\/span>prototype<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#039;[object Null]&#039;<\/span><br \/>\nArray<span class=\"token punctuation\">.<\/span><span class=\"token function\">isArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ true<\/span><\/p>\n<h4>2. Object.prototype.toString.call()\u5224\u65ad\u4f7f\u7528\u662f\u4ec0\u4e48\u539f\u7406&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u539f\u7406&#xff1a;\u6bcf\u4e2aJS\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u5185\u90e8\u5c5e\u6027[[Class]]&#xff0c;\u8be5\u5c5e\u6027\u5b58\u50a8\u4e86\u5bf9\u8c61\u7684\u7c7b\u578b\u4fe1\u606f&#xff08;\u5982Array\u3001Object\u3001Null&#xff09;&#xff1b;<\/li>\n<li>Object.prototype.toString()\u65b9\u6cd5\u7684\u4f5c\u7528\u662f\u8fd4\u56de[object [[Class]]]\u683c\u5f0f\u7684\u5b57\u7b26\u4e32&#xff1b;<\/li>\n<li>\u7531\u4e8e\u5176\u4ed6\u7c7b\u578b&#xff08;\u5982Array\u3001Number&#xff09;\u4f1a\u91cd\u5199toString\u65b9\u6cd5&#xff0c;\u56e0\u6b64\u9700\u8981\u7528call()\u6539\u53d8this\u6307\u5411&#xff0c;\u8c03\u7528\u6700\u9876\u5c42\u7684Object.prototype.toString&#xff0c;\u4ece\u800c\u83b7\u53d6\u51c6\u786e\u7684[[Class]]\u5c5e\u6027\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token comment\">\/\/ \u6570\u7ec4\u91cd\u5199\u4e86toString&#xff0c;\u76f4\u63a5\u8c03\u7528\u8fd4\u56de\u5143\u7d20\u62fc\u63a5<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#039;1,2&#039;<\/span><br \/>\n<span class=\"token comment\">\/\/ call\u6539\u53d8this&#xff0c;\u8c03\u7528Object\u7684toString<\/span><br \/>\n<span class=\"token class-name\">Object<\/span><span class=\"token punctuation\">.<\/span>prototype<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ &#039;[object Array]&#039;<\/span>\n <\/li>\n<\/ul>\n<h4>3. \u6570\u7ec4\u76f8\u5173<\/h4>\n<h5>&#xff08;1&#xff09;\u6570\u7ec4\u7684\u6240\u6709API&#xff08;\u65b9\u6cd5&#xff09;&#xff0c;\u4f1a\u6539\u53d8\u539f\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 \u4f1a\u6539\u53d8\u539f\u6570\u7ec4\u7684\u65b9\u6cd5&#xff08;9\u4e2a&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u589e\u5220\u6539&#xff1a;push()&#xff08;\u5c3e\u90e8\u52a0&#xff09;\u3001pop()&#xff08;\u5c3e\u90e8\u5220&#xff09;\u3001unshift()&#xff08;\u5934\u90e8\u52a0&#xff09;\u3001shift()&#xff08;\u5934\u90e8\u5220&#xff09;\u3001splice()&#xff08;\u4efb\u610f\u4f4d\u7f6e\u589e\u5220\u6539&#xff09;&#xff1b;<\/li>\n<li>\u6392\u5e8f\/\u53cd\u8f6c&#xff1a;sort()\u3001reverse()&#xff1b;<\/li>\n<li>\u586b\u5145\/\u590d\u5236&#xff1a;fill()\u3001copyWithin()&#xff1b;<\/li>\n<\/ul>\n<h6>\u2461 \u4e0d\u6539\u53d8\u539f\u6570\u7ec4\u7684\u65b9\u6cd5&#xff08;\u5e38\u7528&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u904d\u5386&#xff1a;forEach()\u3001map()\u3001filter()\u3001some()\u3001every()\u3001find()\u3001findIndex()&#xff1b;<\/li>\n<li>\u62fc\u63a5\/\u622a\u53d6&#xff1a;concat()\u3001slice()&#xff1b;<\/li>\n<li>\u8f6c\u6362&#xff1a;join()\u3001toString()&#xff1b;<\/li>\n<li>\u67e5\u627e&#xff1a;indexOf()\u3001includes()\u3001lastIndexOf()&#xff1b;<\/li>\n<li>\u5f52\u5e76&#xff1a;reduce()\u3001reduceRight()&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u6570\u7ec4\u65b0\u589e\u5143\u7d20\u7684\u65b9\u6cd5&#xff0c;splice\u65b9\u6cd5\u6709\u51e0\u4e2a\u53c2\u6570&#xff0c;\u8fd4\u56de\u503c\u662f\u4ec0\u4e48&#xff0c;push\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u662f\u4ec0\u4e48&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 \u6570\u7ec4\u65b0\u589e\u5143\u7d20\u7684\u65b9\u6cd5&#xff1a;<\/h6>\n<ul>\n<li>\u5c3e\u90e8\u65b0\u589e&#xff1a;push()&#xff08;\u6539\u53d8\u539f\u6570\u7ec4&#xff09;&#xff1b;<\/li>\n<li>\u5934\u90e8\u65b0\u589e&#xff1a;unshift()&#xff08;\u6539\u53d8\u539f\u6570\u7ec4&#xff09;&#xff1b;<\/li>\n<li>\u4efb\u610f\u4f4d\u7f6e\u65b0\u589e&#xff1a;splice(\u8d77\u59cb\u7d22\u5f15, 0, \u65b0\u589e\u5143\u7d20)&#xff08;\u6539\u53d8\u539f\u6570\u7ec4&#xff09;&#xff1b;<\/li>\n<li>\u751f\u6210\u65b0\u6570\u7ec4\u65b0\u589e&#xff1a;concat()&#xff08;\u4e0d\u6539\u53d8\u539f\u6570\u7ec4&#xff09;\u3001[&#8230;arr, \u65b0\u5143\u7d20]&#xff08;ES6\u6269\u5c55\u8fd0\u7b97\u7b26&#xff09;&#xff1b;<\/li>\n<\/ul>\n<h6>\u2461 splice\u53c2\u6570\u53ca\u8fd4\u56de\u503c&#xff1a;<\/h6>\n<ul>\n<li>\u8bed\u6cd5&#xff1a;arr.splice(start[, deleteCount[, item1[, item2[, &#8230;]]]])&#xff1b;<\/li>\n<li>\u53c2\u6570&#xff1a;\n<li>start&#xff1a;\u8d77\u59cb\u7d22\u5f15&#xff08;\u5fc5\u586b&#xff0c;\u8d1f\u6570\u8868\u793a\u4ece\u672b\u5c3e\u5f00\u59cb&#xff09;&#xff1b;<\/li>\n<li>deleteCount&#xff1a;\u5220\u9664\u5143\u7d20\u4e2a\u6570&#xff08;\u53ef\u9009&#xff0c;0\u5219\u4e0d\u5220\u9664&#xff0c;\u7701\u7565\u5219\u5220\u9664\u5230\u672b\u5c3e&#xff09;&#xff1b;<\/li>\n<li>item1&#8230;&#xff1a;\u65b0\u589e\u7684\u5143\u7d20&#xff08;\u53ef\u9009&#xff09;&#xff1b;<\/li>\n<\/li>\n<li>\u8fd4\u56de\u503c&#xff1a;\u88ab\u5220\u9664\u7684\u5143\u7d20\u7ec4\u6210\u7684\u6570\u7ec4&#xff08;\u65e0\u5220\u9664\u5219\u8fd4\u56de\u7a7a\u6570\u7ec4&#xff09;&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff1a;[1,2,3].splice(1, 0, 4) \u2192 \u539f\u6570\u7ec4\u53d8\u4e3a[1,4,2,3]&#xff0c;\u8fd4\u56de[]&#xff1b;<\/li>\n<\/ul>\n<h6>\u2462 push\u8fd4\u56de\u503c&#xff1a;<\/h6>\n<ul>\n<li>\u8bed\u6cd5&#xff1a;arr.push(item1, item2, &#8230;)&#xff1b;<\/li>\n<li>\u8fd4\u56de\u503c&#xff1a;\u65b0\u589e\u540e\u6570\u7ec4\u7684\u957f\u5ea6&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff1a;[1,2].push(3) \u2192 \u8fd4\u56de3&#xff0c;\u539f\u6570\u7ec4\u53d8\u4e3a[1,2,3]\u3002<\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;forEach \u548c Map \u7684\u533a\u522b&#xff0c;\u662f\u5426\u90fd\u4f1a\u6539\u53d8\u539f\u6570\u7ec4&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027forEachmap<\/tr>\n<tbody>\n<tr>\n<td>\u8fd4\u56de\u503c<\/td>\n<td>\u65e0\u8fd4\u56de\u503c&#xff08;undefined&#xff09;<\/td>\n<td>\u8fd4\u56de\u65b0\u6570\u7ec4&#xff08;\u7531\u56de\u8c03\u8fd4\u56de\u503c\u7ec4\u6210&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6838\u5fc3\u7528\u9014<\/td>\n<td>\u904d\u5386\u6267\u884c\u64cd\u4f5c&#xff08;\u5982\u6253\u5370\u3001\u4fee\u6539\u539f\u6570\u7ec4\u5143\u7d20&#xff09;<\/td>\n<td>\u904d\u5386\u5e76\u8f6c\u6362\u6570\u7ec4&#xff08;\u5982\u6570\u636e\u683c\u5f0f\u5316&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u662f\u5426\u6539\u53d8\u539f\u6570\u7ec4<\/td>\n<td>\u672c\u8eab\u4e0d\u6539\u53d8&#xff0c;\u4f46\u56de\u8c03\u4e2d\u53ef\u4fee\u6539\u539f\u6570\u7ec4\u5143\u7d20<\/td>\n<td>\u672c\u8eab\u4e0d\u6539\u53d8&#xff0c;\u56de\u8c03\u4e5f\u4e0d\u4f1a\u4fee\u6539\u539f\u6570\u7ec4<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u65ad\u904d\u5386<\/td>\n<td>\u65e0\u6cd5\u4e2d\u65ad&#xff08;break\/return\u65e0\u6548&#xff09;<\/td>\n<td>\u65e0\u6cd5\u4e2d\u65ad<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd<\/td>\n<td>\u7565\u9ad8&#xff08;\u65e0\u8fd4\u56de\u503c&#xff09;<\/td>\n<td>\u7565\u4f4e&#xff08;\u9700\u751f\u6210\u65b0\u6570\u7ec4&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">const<\/span> arr <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ forEach<\/span><br \/>\narr<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> item <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56deundefined&#xff0c;arr\u4ecd\u4e3a[1,2,3]<\/span><br \/>\n<span class=\"token comment\">\/\/ map<\/span><br \/>\n<span class=\"token keyword\">const<\/span> newArr <span class=\"token operator\">&#061;<\/span> arr<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> item <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ newArr&#061;[2,4,6]&#xff0c;arr\u4ecd\u4e3a[1,2,3]<\/span>\n <\/li>\n<li>\u6838\u5fc3\u7ed3\u8bba&#xff1a;\u4e24\u8005\u672c\u8eab\u90fd\u4e0d\u4f1a\u6539\u53d8\u539f\u6570\u7ec4&#xff0c;forEach\u4fa7\u91cd\u201c\u6267\u884c\u64cd\u4f5c\u201d&#xff0c;map\u4fa7\u91cd\u201c\u8f6c\u6362\u6570\u7ec4\u201d\u3002<\/li>\n<\/ul>\n<h5>&#xff08;4&#xff09;\u6c42\u4e24\u4e2a\u6570\u7ec4\u5e76\u96c6\u3001\u4ea4\u96c6\u7684\u65b9\u6cd5<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 \u5e76\u96c6&#xff08;\u53bb\u91cd&#xff09;&#xff1a;<\/h6>\n<p><span class=\"token keyword\">const<\/span> arr1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> arr2 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u65b9\u6cd51&#xff1a;Set &#043; \u6269\u5c55\u8fd0\u7b97\u7b26&#xff08;ES6&#xff0c;\u63a8\u8350&#xff09;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> union <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8230;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Set<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8230;<\/span>arr1<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8230;<\/span>arr2<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ [1,2,3,4,5]<\/span><br \/>\n<span class=\"token comment\">\/\/ \u65b9\u6cd52&#xff1a;filter &#043; includes<\/span><br \/>\n<span class=\"token keyword\">const<\/span> union2 <span class=\"token operator\">&#061;<\/span> arr1<span class=\"token punctuation\">.<\/span><span class=\"token function\">concat<\/span><span class=\"token punctuation\">(<\/span>arr2<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token operator\">!<\/span>arr1<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h6>\u2461 \u4ea4\u96c6&#xff1a;<\/h6>\n<p><span class=\"token comment\">\/\/ \u65b9\u6cd51&#xff1a;filter &#043; includes&#xff08;\u63a8\u8350&#xff09;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> intersection <span class=\"token operator\">&#061;<\/span> arr1<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> arr2<span class=\"token punctuation\">.<\/span><span class=\"token function\">includes<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ [3]<\/span><br \/>\n<span class=\"token comment\">\/\/ \u65b9\u6cd52&#xff1a;Set\u4f18\u5316&#xff08;\u5927\u6570\u636e\u91cf&#xff09;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> set2 <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Set<\/span><span class=\"token punctuation\">(<\/span>arr2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> intersection2 <span class=\"token operator\">&#061;<\/span> arr1<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> set2<span class=\"token punctuation\">.<\/span><span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>4. \u5b57\u7b26\u4e32\u76f8\u5173<\/h4>\n<h5>&#xff08;1&#xff09;\u5e38\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u6cd5\u4f5c\u7528\u793a\u4f8b<\/tr>\n<tbody>\n<tr>\n<td>charAt(index)<\/td>\n<td>\u83b7\u53d6\u6307\u5b9a\u7d22\u5f15\u5b57\u7b26<\/td>\n<td>&#039;abc&#039;.charAt(1) \u2192 \u2018b\u2019<\/td>\n<\/tr>\n<tr>\n<td>indexOf(str)<\/td>\n<td>\u67e5\u627e\u5b50\u4e32\u9996\u6b21\u51fa\u73b0\u4f4d\u7f6e&#xff0c;\u65e0\u5219-1<\/td>\n<td>&#039;abc&#039;.indexOf(&#039;b&#039;) \u2192 1<\/td>\n<\/tr>\n<tr>\n<td>includes(str)<\/td>\n<td>\u5224\u65ad\u662f\u5426\u5305\u542b\u5b50\u4e32&#xff08;ES6&#xff09;<\/td>\n<td>&#039;abc&#039;.includes(&#039;bc&#039;) \u2192 true<\/td>\n<\/tr>\n<tr>\n<td>slice(start, end)<\/td>\n<td>\u622a\u53d6\u5b50\u4e32&#xff08;\u4e0d\u5305\u542bend&#xff09;<\/td>\n<td>&#039;abc&#039;.slice(1,3) \u2192 \u2018bc\u2019<\/td>\n<\/tr>\n<tr>\n<td>substring(start, end)<\/td>\n<td>\u622a\u53d6\u5b50\u4e32&#xff08;\u540cslice&#xff0c;start&gt;end\u81ea\u52a8\u4ea4\u6362&#xff09;<\/td>\n<td>&#039;abc&#039;.substring(2,1) \u2192 \u2018b\u2019<\/td>\n<\/tr>\n<tr>\n<td>replace(old, new)<\/td>\n<td>\u66ff\u6362\u5b50\u4e32&#xff08;\u9ed8\u8ba4\u53ea\u66ff\u6362\u7b2c\u4e00\u4e2a&#xff09;<\/td>\n<td>&#039;aaa&#039;.replace(&#039;a&#039;, &#039;b&#039;) \u2192 \u2018baa\u2019<\/td>\n<\/tr>\n<tr>\n<td>split(sep)<\/td>\n<td>\u5206\u5272\u4e3a\u6570\u7ec4<\/td>\n<td>&#039;a,b,c&#039;.split(&#039;,&#039;) \u2192 [\u2018a\u2019,\u2018b\u2019,\u2018c\u2019]<\/td>\n<\/tr>\n<tr>\n<td>trim()<\/td>\n<td>\u53bb\u9664\u9996\u5c3e\u7a7a\u683c<\/td>\n<td>&#039; a b &#039;.trim() \u2192 \u2018a b\u2019<\/td>\n<\/tr>\n<tr>\n<td>toUpperCase()\/toLowerCase()<\/td>\n<td>\u5927\u5c0f\u5199\u8f6c\u6362<\/td>\n<td>&#039;Ab&#039;.toUpperCase() \u2192 \u2018AB\u2019<\/td>\n<\/tr>\n<tr>\n<td>startsWith(str)\/endsWith(str)<\/td>\n<td>\u5224\u65ad\u5f00\u5934\/\u7ed3\u5c3e&#xff08;ES6&#xff09;<\/td>\n<td>&#039;abc&#039;.startsWith(&#039;a&#039;) \u2192 true<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>&#xff08;2&#xff09;\u5b57\u7b26\u4e32\u8f6c\u6570\u7ec4\u548c\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 \u5b57\u7b26\u4e32\u8f6c\u6570\u7ec4&#xff1a;<\/h6>\n<ul>\n<li>\u65b9\u6cd51&#xff1a;split(\u5206\u9694\u7b26)&#xff08;\u5e38\u7528&#xff09;&#xff1a;&#039;123&#039;.split(&#039;&#039;) \u2192 [\u20181\u2019,\u20182\u2019,\u20183\u2019]&#xff1b;<\/li>\n<li>\u65b9\u6cd52&#xff1a;Array.from()&#xff1a;Array.from(&#039;123&#039;) \u2192 [\u20181\u2019,\u20182\u2019,\u20183\u2019]&#xff1b;<\/li>\n<li>\u65b9\u6cd53&#xff1a;\u6269\u5c55\u8fd0\u7b97\u7b26&#xff1a;[&#8230;&#039;123&#039;] \u2192 [\u20181\u2019,\u20182\u2019,\u20183\u2019]&#xff1b;<\/li>\n<\/ul>\n<h6>\u2461 \u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32&#xff1a;<\/h6>\n<ul>\n<li>\u65b9\u6cd51&#xff1a;join(\u5206\u9694\u7b26)&#xff08;\u5e38\u7528&#xff09;&#xff1a;[1,2,3].join(&#039;,&#039;) \u2192 \u20181,2,3\u2019&#xff1b;<\/li>\n<li>\u65b9\u6cd52&#xff1a;toString()&#xff1a;[1,2,3].toString() \u2192 \u20181,2,3\u2019&#xff1b;<\/li>\n<li>\u65b9\u6cd53&#xff1a;String()&#xff1a;String([1,2,3]) \u2192 \u20181,2,3\u2019\u3002<\/li>\n<\/ul>\n<h4>5. \u62f7\u8d1d\u76f8\u5173<\/h4>\n<h5>&#xff08;1&#xff09;JS\u4e2d\u6709\u54ea\u4e9b\u662f\u5b9e\u73b0\u6d45\u62f7\u8d1d\u7684\u65b9\u6cd5&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a; \u6d45\u62f7\u8d1d&#xff1a;\u53ea\u62f7\u8d1d\u7b2c\u4e00\u5c42\u5c5e\u6027&#xff0c;\u5f15\u7528\u7c7b\u578b\u5c5e\u6027\u4ecd\u6307\u5411\u539f\u5730\u5740&#xff1b; \u5e38\u7528\u65b9\u6cd5&#xff1a;<\/p>\n<li>\u6269\u5c55\u8fd0\u7b97\u7b26&#xff1a;const newObj &#061; { &#8230;obj }\u3001const newArr &#061; [&#8230;arr]&#xff1b;<\/li>\n<li>Object.assign()&#xff1a;const newObj &#061; Object.assign({}, obj)&#xff1b;<\/li>\n<li>\u6570\u7ec4\u65b9\u6cd5&#xff1a;arr.slice()\u3001arr.concat()&#xff1b;<\/li>\n<li>\u624b\u52a8\u904d\u5386&#xff1a;\u904d\u5386\u7b2c\u4e00\u5c42\u5c5e\u6027\u8d4b\u503c&#xff1b; \u793a\u4f8b&#xff1a;<\/li>\n<p><span class=\"token keyword\">const<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">a<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token literal-property property\">b<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">c<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">2<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> newObj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">&#8230;<\/span>obj <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\nnewObj<span class=\"token punctuation\">.<\/span>b<span class=\"token punctuation\">.<\/span>c <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u539fobj.b.c\u4e5f\u53d8\u4e3a3&#xff08;\u6d45\u62f7\u8d1d\u7279\u6027&#xff09;<\/span><\/p>\n<h5>&#xff08;2&#xff09;JSON\u8f6c\u6362\u5b9e\u73b0\u6df1\u62f7\u8d1d\u65b9\u6cd5\u7684\u5c40\u9650\u6027\u3002\u5199\u5b9e\u73b0\u6df1\u62f7\u8d1d\u7684\u65b9\u6cd5&#xff08;\u9700\u5904\u7406Date\u3001\u6b63\u5219\u3001\u5faa\u73af\u5f15\u7528&#xff09;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 JSON\u8f6c\u6362\u6df1\u62f7\u8d1d\u7684\u5c40\u9650\u6027&#xff1a;<\/h6>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token function-variable function\">deepClone<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token parameter\">obj<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stringify<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u7f3a\u70b9&#xff1a;<\/p>\n<li>\u65e0\u6cd5\u62f7\u8d1d\u51fd\u6570\u3001undefined\u3001Symbol&#xff1b;<\/li>\n<li>\u65e0\u6cd5\u62f7\u8d1d\u5faa\u73af\u5f15\u7528&#xff08;\u4f1a\u62a5\u9519&#xff09;&#xff1b;<\/li>\n<li>\u65e5\u671f\u5bf9\u8c61\u4f1a\u88ab\u8f6c\u4e3a\u5b57\u7b26\u4e32&#xff1b;<\/li>\n<li>\u6b63\u5219\u5bf9\u8c61\u4f1a\u88ab\u8f6c\u4e3a\u7a7a\u5bf9\u8c61&#xff1b;<\/li>\n<li>\u4e22\u5931\u539f\u578b\u94fe&#xff08;\u62f7\u8d1d\u540e\u53d8\u4e3a\u666e\u901a\u5bf9\u8c61&#xff09;\u3002<\/li>\n<h6>\u2461 \u5b8c\u6574\u6df1\u62f7\u8d1d\u5b9e\u73b0&#xff08;\u5904\u7406Date\u3001\u6b63\u5219\u3001\u5faa\u73af\u5f15\u7528&#xff09;&#xff1a;<\/h6>\n<p><span class=\"token keyword\">function<\/span> <span class=\"token function\">deepClone<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">,<\/span> map <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">WeakMap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ \u5904\u7406null\/undefined<\/span><br \/>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>target <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> <span class=\"token keyword\">typeof<\/span> target <span class=\"token operator\">!&#061;&#061;<\/span> <span class=\"token string\">&#039;object&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> target<span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5904\u7406\u5faa\u73af\u5f15\u7528<\/span><br \/>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>map<span class=\"token punctuation\">.<\/span><span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> map<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5904\u7406\u65e5\u671f<\/span><br \/>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>target <span class=\"token keyword\">instanceof<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> newDate <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    newDate<span class=\"token punctuation\">.<\/span><span class=\"token function\">setTime<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">.<\/span><span class=\"token function\">getTime<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    map<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">,<\/span> newDate<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> newDate<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5904\u7406\u6b63\u5219<\/span><br \/>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>target <span class=\"token keyword\">instanceof<\/span> <span class=\"token class-name\">RegExp<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> newReg <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RegExp<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">.<\/span>source<span class=\"token punctuation\">,<\/span> target<span class=\"token punctuation\">.<\/span>flags<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    map<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">,<\/span> newReg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> newReg<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u5904\u7406\u6570\u7ec4\/\u5bf9\u8c61&#xff08;\u4fdd\u7559\u539f\u578b&#xff09;<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> cloneTarget <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">target<span class=\"token punctuation\">.<\/span>constructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  map<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">,<\/span> cloneTarget<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u904d\u5386\u5c5e\u6027&#xff08;\u5305\u542b\u4e0d\u53ef\u679a\u4e3e\u3001Symbol\u5c5e\u6027&#xff09;<\/span><br \/>\n  Reflect<span class=\"token punctuation\">.<\/span><span class=\"token function\">ownKeys<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">key<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    cloneTarget<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">deepClone<\/span><span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> map<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">return<\/span> cloneTarget<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>6. \u51fd\u6570\u76f8\u5173<\/h4>\n<h5>&#xff08;1&#xff09;\u624b\u6495 &#8211; sleep(delay)\u51fd\u6570<\/h5>\n<p>\u7b54\u6848&#xff1a; sleep\u51fd\u6570&#xff1a;\u5ef6\u8fdf\u6307\u5b9a\u65f6\u95f4\u540e\u6267\u884c\u540e\u7eed\u4ee3\u7801&#xff0c;\u67092\u79cd\u5b9e\u73b0\u65b9\u5f0f&#xff1a;<\/p>\n<h6>\u65b9\u5f0f1&#xff08;Promise &#043; async\/await&#xff0c;\u63a8\u8350&#xff09;&#xff1a;<\/h6>\n<p><span class=\"token keyword\">function<\/span> <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">delay<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Promise<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">resolve<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span>resolve<span class=\"token punctuation\">,<\/span> delay<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u5f00\u59cb&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">await<\/span> <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5ef6\u8fdf1\u79d2<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;1\u79d2\u540e\u6267\u884c&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h6>\u65b9\u5f0f2&#xff08;\u56de\u8c03\u51fd\u6570&#xff09;&#xff1a;<\/h6>\n<p><span class=\"token keyword\">function<\/span> <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">delay<span class=\"token punctuation\">,<\/span> callback<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span>callback<span class=\"token punctuation\">,<\/span> delay<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528<\/span><br \/>\n<span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;1\u79d2\u540e\u6267\u884c&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>&#xff08;2&#xff09;\u9632\u6296\u548c\u8282\u6d41\u662f\u4ec0\u4e48\u610f\u601d&#xff1f;\u8bf4\u5b9e\u73b0\u601d\u8def<\/h5>\n<p>\u7b54\u6848&#xff1a; \u6838\u5fc3\u89e3\u51b3&#xff1a;\u9ad8\u9891\u4e8b\u4ef6&#xff08;\u5982\u6eda\u52a8\u3001\u8f93\u5165\u3001\u70b9\u51fb&#xff09;\u89e6\u53d1\u8fc7\u591a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528\u4e8e\u641c\u7d22\u6846\u8f93\u5165\u3001\u4e0b\u62c9\u5237\u65b0\u7b49\u573a\u666f\u3002<\/p>\n<h6>\u2460 \u9632\u6296&#xff08;Debounce&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;\u89e6\u53d1\u4e8b\u4ef6\u540e&#xff0c;\u5ef6\u8fdfn\u79d2\u6267\u884c\u56de\u8c03&#xff1b;\u82e5n\u79d2\u5185\u518d\u6b21\u89e6\u53d1&#xff0c;\u5219\u91cd\u7f6e\u5ef6\u8fdf\u65f6\u95f4&#xff1b;<\/li>\n<li>\u6838\u5fc3&#xff1a;\u201c\u5ef6\u8fdf\u6267\u884c&#xff0c;\u91cd\u590d\u89e6\u53d1\u91cd\u7f6e\u201d&#xff0c;\u9002\u5408\u641c\u7d22\u6846\u8f93\u5165\u3001\u6309\u94ae\u9632\u91cd\u590d\u70b9\u51fb&#xff1b;<\/li>\n<li>\u5b9e\u73b0\u601d\u8def&#xff1a;<span class=\"token keyword\">function<\/span> <span class=\"token function\">debounce<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">fn<span class=\"token punctuation\">,<\/span> delay<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">let<\/span> timer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token operator\">&#8230;<\/span>args<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u91cd\u7f6e\u5b9a\u65f6\u5668<\/span><br \/>\n    <span class=\"token function\">clearTimeout<\/span><span class=\"token punctuation\">(<\/span>timer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    timer <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">fn<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">apply<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> delay<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528&#xff1a;\u641c\u7d22\u6846\u8f93\u5165\u9632\u6296<\/span><br \/>\n<span class=\"token keyword\">const<\/span> inputHandler <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">debounce<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">value<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u641c\u7d22&#xff1a;&#039;<\/span><span class=\"token punctuation\">,<\/span> value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h6>\u2461 \u8282\u6d41&#xff08;Throttle&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;\u89e6\u53d1\u4e8b\u4ef6\u540e&#xff0c;n\u79d2\u5185\u53ea\u6267\u884c\u4e00\u6b21\u56de\u8c03&#xff0c;\u5269\u4f59\u89e6\u53d1\u5ffd\u7565&#xff1b;<\/li>\n<li>\u6838\u5fc3&#xff1a;\u201c\u56fa\u5b9a\u9891\u7387\u6267\u884c\u201d&#xff0c;\u9002\u5408\u6eda\u52a8\u52a0\u8f7d\u3001\u7a97\u53e3resize&#xff1b;<\/li>\n<li>\u5b9e\u73b0\u601d\u8def&#xff08;\u65f6\u95f4\u6233\u7248&#xff09;&#xff1a;<span class=\"token keyword\">function<\/span> <span class=\"token function\">throttle<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">fn<span class=\"token punctuation\">,<\/span> interval<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">let<\/span> lastTime <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\"><span class=\"token operator\">&#8230;<\/span>args<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> now <span class=\"token operator\">&#061;<\/span> Date<span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u95f4\u9694\u65f6\u95f4\u5185\u4e0d\u6267\u884c<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>now <span class=\"token operator\">&#8211;<\/span> lastTime <span class=\"token operator\">&gt;&#061;<\/span> interval<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">fn<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">apply<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      lastTime <span class=\"token operator\">&#061;<\/span> now<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528&#xff1a;\u6eda\u52a8\u8282\u6d41<\/span><br \/>\n<span class=\"token keyword\">const<\/span> scrollHandler <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">throttle<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u6eda\u52a8\u4e2d&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;call apply\u533a\u522b<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u76f8\u540c\u70b9&#xff1a;\n<li>\u90fd\u7528\u4e8e\u6539\u53d8\u51fd\u6570this\u6307\u5411&#xff1b;<\/li>\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570\u90fd\u662fthis\u6307\u5411\u7684\u5bf9\u8c61&#xff08;\u975e\u4e25\u683c\u6a21\u5f0f\u4e0b\u4f20null\/undefined\u5219\u6307\u5411window&#xff09;&#xff1b;<\/li>\n<li>\u90fd\u4f1a\u7acb\u5373\u6267\u884c\u51fd\u6570&#xff1b;<\/li>\n<\/li>\n<li>\u4e0d\u540c\u70b9&#xff1a;\u53c2\u6570\u4f20\u9012\u65b9\u5f0f\u4e0d\u540c&#xff1b;\n<ul>\n<li>call&#xff1a;\u7b2c\u4e8c\u4e2a\u53ca\u4ee5\u540e\u53c2\u6570\u662f\u9010\u4e2a\u4f20\u9012&#xff1b; \u793a\u4f8b&#xff1a;fn.call(obj, 1, 2, 3)&#xff1b;<\/li>\n<li>apply&#xff1a;\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u6570\u7ec4\/\u7c7b\u6570\u7ec4&#xff0c;\u4e00\u6b21\u6027\u4f20\u9012&#xff1b; \u793a\u4f8b&#xff1a;fn.apply(obj, [1,2,3])&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5e94\u7528\u573a\u666f&#xff1a;\n<ul>\n<li>\u53c2\u6570\u6570\u91cf\u56fa\u5b9a\u7528call&#xff1b;<\/li>\n<li>\u53c2\u6570\u6570\u91cf\u4e0d\u56fa\u5b9a\/\u5df2\u6709\u6570\u7ec4\u7528apply&#xff08;\u5982Math.max.apply(null, arr)&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u8865\u5145&#xff1a;ES6\u53ef\u901a\u8fc7fn(&#8230;arr)\u66ff\u4ee3apply\u3002<\/li>\n<\/ul>\n<h5>&#xff08;4&#xff09;async\u548cdefer\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a; \u4e24\u8005\u5747\u7528\u4e8e\u4f18\u5316&lt;script&gt;\u6807\u7b7e\u52a0\u8f7d&#xff0c;\u907f\u514d\u963b\u585e\u9875\u9762\u6e32\u67d3&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u867d\u4e0d\u76f4\u63a5\u4f7f\u7528&#xff0c;\u4f46\u9700\u7406\u89e3\u539f\u7406&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027asyncdefer<\/tr>\n<tbody>\n<tr>\n<td>\u52a0\u8f7d\u65f6\u673a<\/td>\n<td>\u5f02\u6b65\u52a0\u8f7d&#xff08;\u4e0d\u963b\u585eHTML\u89e3\u6790&#xff09;<\/td>\n<td>\u5f02\u6b65\u52a0\u8f7d&#xff08;\u4e0d\u963b\u585eHTML\u89e3\u6790&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6267\u884c\u65f6\u673a<\/td>\n<td>\u52a0\u8f7d\u5b8c\u6210\u540e\u7acb\u5373\u6267\u884c&#xff08;\u53ef\u80fd\u4e2d\u65adHTML\u89e3\u6790&#xff09;<\/td>\n<td>HTML\u89e3\u6790\u5b8c\u6210\u540e\u3001DOMContentLoaded\u524d\u6267\u884c<\/td>\n<\/tr>\n<tr>\n<td>\u6267\u884c\u987a\u5e8f<\/td>\n<td>\u4e0d\u4fdd\u8bc1&#xff08;\u6309\u52a0\u8f7d\u5b8c\u6210\u987a\u5e8f&#xff09;<\/td>\n<td>\u4fdd\u8bc1&#xff08;\u6309\u6807\u7b7e\u4e66\u5199\u987a\u5e8f&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u72ec\u7acb\u811a\u672c&#xff08;\u5982\u7edf\u8ba1\u3001\u5e7f\u544a&#xff09;<\/td>\n<td>\u4f9d\u8d56DOM\/\u987a\u5e8f\u7684\u811a\u672c&#xff08;\u5982\u4e1a\u52a1\u903b\u8f91&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>7. \u539f\u578b\u4e0e\u539f\u578b\u94fe<\/h4>\n<h5>&#xff08;1&#xff09;\u8bf4\u8bf4\u539f\u578b&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a; \u539f\u578b\u662fJS\u5b9e\u73b0\u7ee7\u627f\u7684\u6838\u5fc3\u673a\u5236&#xff0c;\u6838\u5fc3\u6982\u5ff5&#xff1a;<\/p>\n<ul>\n<li>prototype&#xff08;\u539f\u578b\u5bf9\u8c61&#xff09;&#xff1a;\u51fd\u6570\u7279\u6709\u7684\u5c5e\u6027&#xff0c;\u6307\u5411\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u8be5\u5bf9\u8c61\u662f\u8be5\u51fd\u6570\u5b9e\u4f8b\u7684\u539f\u578b&#xff1b;<\/li>\n<li>__proto__&#xff08;\u9690\u5f0f\u539f\u578b&#xff09;&#xff1a;\u6240\u6709\u5bf9\u8c61&#xff08;\u9664null&#xff09;\u90fd\u6709\u7684\u5c5e\u6027&#xff0c;\u6307\u5411\u5176\u6784\u9020\u51fd\u6570\u7684prototype&#xff1b;<\/li>\n<li>constructor&#xff1a;\u539f\u578b\u5bf9\u8c61\u4e0a\u7684\u5c5e\u6027&#xff0c;\u6307\u5411\u6784\u9020\u51fd\u6570\u672c\u8eab&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">function<\/span> <span class=\"token function\">Person<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">const<\/span> p <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\np<span class=\"token punctuation\">.<\/span>__proto__ <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span>prototype<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ true<\/span><br \/>\n<span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span>prototype<span class=\"token punctuation\">.<\/span>constructor <span class=\"token operator\">&#061;&#061;&#061;<\/span> Person<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ true<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u539f\u578b\u94fe\u67e5\u627e&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;\u5f53\u8bbf\u95ee\u5bf9\u8c61\u7684\u5c5e\u6027\/\u65b9\u6cd5\u65f6&#xff0c;\u5148\u5728\u81ea\u8eab\u67e5\u627e&#xff0c;\u627e\u4e0d\u5230\u5219\u901a\u8fc7__proto__\u5411\u4e0a\u67e5\u627e\u539f\u578b\u5bf9\u8c61&#xff0c;\u76f4\u5230Object.prototype&#xff0c;\u82e5\u4ecd\u627e\u4e0d\u5230\u5219\u8fd4\u56deundefined&#xff0c;\u8fd9\u4e2a\u67e5\u627e\u94fe\u6761\u5c31\u662f\u539f\u578b\u94fe&#xff1b;<\/li>\n<li>\u6838\u5fc3\u89c4\u5219&#xff1a;\n<li>\u8bfb\u53d6\u5c5e\u6027\u65f6\u89e6\u53d1\u539f\u578b\u94fe\u67e5\u627e&#xff0c;\u8d4b\u503c\u65f6\u4ec5\u4fee\u6539\u81ea\u8eab\u5c5e\u6027&#xff08;\u9664\u975e\u539f\u578b\u5c5e\u6027\u662f\u53ef\u5199\u7684&#xff09;&#xff1b;<\/li>\n<li>Object.prototype.__proto__ &#061;&#061;&#061; null&#xff08;\u539f\u578b\u94fe\u7ec8\u70b9&#xff09;&#xff1b;<\/li>\n<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">const<\/span> arr <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u8bbf\u95eeforEach&#xff1a;arr\u81ea\u8eab\u6ca1\u6709 \u2192 arr.__proto__&#xff08;Array.prototype&#xff09;\u6709 \u2192 \u627e\u5230<\/span><br \/>\narr<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u8bbf\u95eeabc&#xff1a;arr \u2192 Array.prototype \u2192 Object.prototype \u2192 \u627e\u4e0d\u5230 \u2192 undefined<\/span><br \/>\narr<span class=\"token punctuation\">.<\/span>abc<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ undefined<\/span>\n <\/li>\n<\/ul>\n<h4>8. \u5176\u4ed6\u6838\u5fc3\u6982\u5ff5<\/h4>\n<h5>&#xff08;1&#xff09;this\u7684\u6307\u5411&#xff1f;\u600e\u4e48\u6539\u53d8&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 this\u6307\u5411\u89c4\u5219&#xff08;\u4f18\u5148\u7ea7\u4ece\u9ad8\u5230\u4f4e&#xff09;&#xff1a;<\/h6>\n<li>\u663e\u5f0f\u7ed1\u5b9a&#xff1a;call\/apply\/bind\u6307\u5b9a\u7684this&#xff1b;<\/li>\n<li>\u9690\u5f0f\u7ed1\u5b9a&#xff1a;\u8c03\u7528\u5bf9\u8c61\u7684\u65b9\u6cd5\u65f6&#xff0c;this\u6307\u5411\u8be5\u5bf9\u8c61&#xff1b;<\/li>\n<li>new\u7ed1\u5b9a&#xff1a;\u6784\u9020\u51fd\u6570\u4e2dthis\u6307\u5411\u65b0\u5efa\u7684\u5b9e\u4f8b&#xff1b;<\/li>\n<li>\u9ed8\u8ba4\u7ed1\u5b9a&#xff1a;\u5168\u5c40\u73af\u5883&#xff08;\u6d4f\u89c8\u5668window&#xff0c;Node global&#xff09;&#xff0c;\u4e25\u683c\u6a21\u5f0f\u4e0b\u4e3aundefined&#xff1b;<\/li>\n<ul>\n<li>\u7279\u6b8a&#xff1a;\u7bad\u5934\u51fd\u6570\u65e0this&#xff0c;\u5176this\u7ee7\u627f\u81ea\u5916\u5c42\u4f5c\u7528\u57df&#xff1b;<\/li>\n<\/ul>\n<h6>\u2461 \u6539\u53d8this\u6307\u5411\u7684\u65b9\u6cd5&#xff1a;<\/h6>\n<li>call&#xff1a;\u7acb\u5373\u6267\u884c&#xff0c;\u9010\u4e2a\u4f20\u53c2&#xff1b;<\/li>\n<li>apply&#xff1a;\u7acb\u5373\u6267\u884c&#xff0c;\u6570\u7ec4\u4f20\u53c2&#xff1b;<\/li>\n<li>bind&#xff1a;\u8fd4\u56de\u65b0\u51fd\u6570&#xff0c;\u4e0d\u7acb\u5373\u6267\u884c&#xff0c;\u53ef\u4f20\u53c2&#xff08;\u67ef\u91cc\u5316&#xff09;&#xff1b;<\/li>\n<li>\u7bad\u5934\u51fd\u6570&#xff1a;\u901a\u8fc7\u7ed1\u5b9a\u5916\u5c42this\u95f4\u63a5\u6539\u53d8&#xff1b;<\/li>\n<li>\u8d4b\u503c&#xff1a;\u5c06\u65b9\u6cd5\u8d4b\u503c\u7ed9\u53d8\u91cf&#xff0c;\u6539\u53d8\u8c03\u7528\u5bf9\u8c61&#xff1b;<\/li>\n<ul>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">const<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">a<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">function<\/span> <span class=\"token function\">fn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>a<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">fn<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 1&#xff08;call\u6539\u53d8&#xff09;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> newFn <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">fn<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">newFn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 1&#xff08;bind\u6539\u53d8&#xff09;<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u95ed\u5305&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;\u51fd\u6570\u5d4c\u5957\u65f6&#xff0c;\u5185\u90e8\u51fd\u6570\u5f15\u7528\u5916\u90e8\u51fd\u6570\u7684\u53d8\u91cf\/\u53c2\u6570&#xff0c;\u5916\u90e8\u51fd\u6570\u6267\u884c\u540e&#xff0c;\u53d8\u91cf\u4ecd\u88ab\u5185\u90e8\u51fd\u6570\u5f15\u7528\u800c\u4e0d\u88ab\u9500\u6bc1&#xff0c;\u5f62\u6210\u95ed\u5305&#xff1b;<\/li>\n<li>\u6838\u5fc3\u4f5c\u7528&#xff1a;\n<li>\u5ef6\u957f\u53d8\u91cf\u751f\u547d\u5468\u671f&#xff08;\u5982\u7f13\u5b58\u6570\u636e&#xff09;&#xff1b;<\/li>\n<li>\u79c1\u6709\u5316\u53d8\u91cf&#xff08;\u907f\u514d\u5168\u5c40\u6c61\u67d3&#xff09;&#xff1b;<\/li>\n<\/li>\n<li>\u793a\u4f8b&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528&#xff09;&#xff1a;<span class=\"token keyword\">function<\/span> <span class=\"token function\">createCounter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">let<\/span> count <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u79c1\u6709\u53d8\u91cf&#xff0c;\u5916\u90e8\u65e0\u6cd5\u8bbf\u95ee<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    count<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> count<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">const<\/span> counter <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">createCounter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">counter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 1<\/span><br \/>\n<span class=\"token function\">counter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 2&#xff08;count\u672a\u88ab\u9500\u6bc1&#xff09;<\/span>\n <\/li>\n<li>\u6ce8\u610f&#xff1a;\u95ed\u5305\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f&#xff0c;\u9700\u53ca\u65f6\u91ca\u653e\u5f15\u7528\u3002<\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;\u4e8b\u4ef6\u5faa\u73af\u673a\u5236&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a; JS\u662f\u5355\u7ebf\u7a0b&#xff0c;\u4e8b\u4ef6\u5faa\u73af&#xff08;Event Loop&#xff09;\u662f\u5f02\u6b65\u6267\u884c\u7684\u6838\u5fc3\u673a\u5236&#xff0c;\u5206\u4e3a\u6d4f\u89c8\u5668\/Node\u73af\u5883&#xff0c;\u6838\u5fc3\u89c4\u5219&#xff1a;<\/p>\n<li>\u4efb\u52a1\u5206\u7c7b&#xff1a;\n<ul>\n<li>\u5b8f\u4efb\u52a1&#xff08;Macrotask&#xff09;&#xff1a;script\u6574\u4f53\u3001setTimeout\/setInterval\u3001AJAX\u3001DOM\u4e8b\u4ef6\u3001setImmediate&#xff1b;<\/li>\n<li>\u5fae\u4efb\u52a1&#xff08;Microtask&#xff09;&#xff1a;Promise.then\/catch\/finally\u3001async\/await\u3001MutationObserver\u3001process.nextTick&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u6267\u884c\u987a\u5e8f&#xff1a;\n<ul>\n<li>\u6267\u884c\u540c\u6b65\u4ee3\u7801&#xff08;\u5b8f\u4efb\u52a1&#xff09;&#xff1b;<\/li>\n<li>\u6267\u884c\u6240\u6709\u5fae\u4efb\u52a1&#xff1b;<\/li>\n<li>\u6e32\u67d3\u9875\u9762&#xff1b;<\/li>\n<li>\u53d6\u4e00\u4e2a\u5b8f\u4efb\u52a1\u6267\u884c&#xff0c;\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<ul>\n<li>\u793a\u4f8b&#xff1a;console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u540c\u6b65<\/span><br \/>\n<span class=\"token function\">setTimeout<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b8f\u4efb\u52a1<\/span><br \/>\nPromise<span class=\"token punctuation\">.<\/span><span class=\"token function\">resolve<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5fae\u4efb\u52a1<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6267\u884c\u987a\u5e8f&#xff1a;1 \u2192 3 \u2192 2<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;4&#xff09;nextTick\u662f\u4ec0\u4e48&#xff0c;\u539f\u7406\u662f\u4ec0\u4e48&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;Vue\/\u5c0f\u7a0b\u5e8f\u4e2d\u63d0\u4f9b\u7684\u65b9\u6cd5&#xff0c;\u7528\u4e8e\u5728DOM\u66f4\u65b0\u5b8c\u6210\u540e\u6267\u884c\u56de\u8c03&#xff1b;<\/li>\n<li>\u539f\u7406&#xff1a;\n<li>Vue2&#xff1a;\u4f18\u5148\u4f7f\u7528\u5fae\u4efb\u52a1&#xff08;Promise.then&#xff09;&#xff0c;\u964d\u7ea7\u4f7f\u7528\u5b8f\u4efb\u52a1&#xff08;setTimeout&#xff09;&#xff1b;<\/li>\n<li>Vue3&#xff1a;\u7edf\u4e00\u4f7f\u7528\u5fae\u4efb\u52a1&#xff08;queueMicrotask&#xff09;&#xff1b;<\/li>\n<\/li>\n<li>\u6838\u5fc3\u4f5c\u7528&#xff1a;\u89e3\u51b3\u201c\u4fee\u6539\u6570\u636e\u540e\u7acb\u5373\u64cd\u4f5cDOM&#xff0c;DOM\u672a\u66f4\u65b0\u201d\u7684\u95ee\u9898&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff08;Vue&#xff09;&#xff1a;<span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>msg <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;new msg&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6b64\u65f6DOM\u672a\u66f4\u65b0<\/span><br \/>\n<span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">$nextTick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ DOM\u5df2\u66f4\u65b0&#xff0c;\u53ef\u64cd\u4f5c<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>document<span class=\"token punctuation\">.<\/span><span class=\"token function\">querySelector<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;.msg&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>textContent<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;5&#xff09;\u6570\u636e\u7c7b\u578b\u9690\u5f0f\u8f6c\u6362\u89c4\u5219\u548c\u663e\u793a\u8f6c\u6362\u7684\u505a\u6cd5&#xff1f;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 \u9690\u5f0f\u8f6c\u6362&#xff08;\u81ea\u52a8\u8f6c\u6362&#xff0c;\u5e38\u89c1\u4e8e\u8fd0\u7b97\/\u5224\u65ad&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u8f6c\u5b57\u7b26\u4e32&#xff1a;&#043;\u8fd0\u7b97\u7b26&#xff08;\u4e00\u4fa7\u4e3a\u5b57\u7b26\u4e32&#xff09;&#xff0c;\u59821 &#043; &#039;2&#039; \u2192 &#039;12&#039;&#xff1b;<\/li>\n<li>\u8f6c\u6570\u5b57&#xff1a;\u7b97\u672f\u8fd0\u7b97&#xff08;-\/*%&#xff09;\u3001\u6bd4\u8f83\u8fd0\u7b97&#xff08;&gt;\/&lt;&#xff09;&#xff0c;\u5982&#039;123&#039; &#8211; 1 \u2192 122&#xff1b;<\/li>\n<li>\u8f6c\u5e03\u5c14&#xff1a;\u903b\u8f91\u8fd0\u7b97&#xff08;&amp;&amp;\/||\/!&#xff09;\u3001if\u5224\u65ad&#xff0c;\u5047\u503c&#xff1a;0\/&#039;&#039;\/null\/undefined\/NaN\/false&#xff0c;\u5176\u4f59\u4e3a\u771f&#xff1b;<\/li>\n<li>\u7279\u6b8a&#xff1a;null &#061;&#061; undefined \u2192 true&#xff0c;NaN !&#061; NaN \u2192 true&#xff1b;<\/li>\n<\/ul>\n<h6>\u2461 \u663e\u5f0f\u8f6c\u6362&#xff08;\u624b\u52a8\u8f6c\u6362&#xff09;&#xff1a;<\/h6>\n<ul>\n<li>\u8f6c\u5b57\u7b26\u4e32&#xff1a;String(obj)\u3001obj.toString()&#xff1b;<\/li>\n<li>\u8f6c\u6570\u5b57&#xff1a;Number(obj)\u3001parseInt()\u3001parseFloat()&#xff1b;<\/li>\n<li>\u8f6c\u5e03\u5c14&#xff1a;Boolean(obj)\u3001!!obj&#xff1b;<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token function\">String<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">123<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ &#039;123&#039;<\/span><br \/>\n<span class=\"token function\">Number<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;123a&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ NaN<\/span><br \/>\n<span class=\"token function\">Boolean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ false<\/span>\n <\/li>\n<\/ul>\n<h5>&#xff08;6&#xff09;\u8bb2\u8bb2Promise&#xff1f;&#xff08;\u542b\u8f93\u51fa\u9898&#xff09;<\/h5>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h6>\u2460 Promise\u6838\u5fc3&#xff1a;<\/h6>\n<ul>\n<li>\u5b9a\u4e49&#xff1a;\u5f02\u6b65\u7f16\u7a0b\u89e3\u51b3\u65b9\u6848&#xff0c;\u89e3\u51b3\u56de\u8c03\u5730\u72f1&#xff0c;\u67093\u79cd\u72b6\u6001&#xff1a;pending&#xff08;\u8fdb\u884c\u4e2d&#xff09;\u3001fulfilled&#xff08;\u6210\u529f&#xff09;\u3001rejected&#xff08;\u5931\u8d25&#xff09;&#xff0c;\u72b6\u6001\u4e00\u65e6\u6539\u53d8\u4e0d\u53ef\u9006\u8f6c&#xff1b;<\/li>\n<li>\u6838\u5fc3\u65b9\u6cd5&#xff1a;\n<ul>\n<li>Promise.resolve()\/Promise.reject()&#xff1a;\u5feb\u901f\u521b\u5efa\u6210\u529f\/\u5931\u8d25\u7684Promise&#xff1b;<\/li>\n<li>then()&#xff1a;\u6210\u529f\u56de\u8c03&#xff0c;\u8fd4\u56de\u65b0Promise&#xff1b;<\/li>\n<li>catch()&#xff1a;\u5931\u8d25\u56de\u8c03&#xff0c;\u6355\u83b7\u9519\u8bef&#xff1b;<\/li>\n<li>finally()&#xff1a;\u65e0\u8bba\u6210\u529f\u5931\u8d25\u90fd\u6267\u884c&#xff1b;<\/li>\n<li>Promise.all()&#xff1a;\u6240\u6709Promise\u6210\u529f\u624d\u6210\u529f&#xff0c;\u4e00\u4e2a\u5931\u8d25\u5219\u5931\u8d25&#xff1b;<\/li>\n<li>Promise.race()&#xff1a;\u7b2c\u4e00\u4e2a\u5b8c\u6210\u7684Promise\u51b3\u5b9a\u7ed3\u679c&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6>\u2461 \u8f93\u51fa\u9898\u793a\u4f8b&#xff1a;<\/h6>\n<p>console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> p <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Promise<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">resolve<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">resolve<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\np<span class=\"token punctuation\">.<\/span><span class=\"token function\">then<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6267\u884c\u987a\u5e8f&#xff1a;1 \u2192 2 \u2192 3 \u2192 5 \u2192 4<\/span><\/p>\n<ul>\n<li>\u89e3\u6790&#xff1a;Promise\u6784\u9020\u51fd\u6570\u5185\u662f\u540c\u6b65\u4ee3\u7801&#xff0c;then\u662f\u5fae\u4efb\u52a1&#xff0c;\u540c\u6b65\u4ee3\u7801\u6267\u884c\u5b8c\u540e\u6267\u884c\u5fae\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<h3>\u4e09\u3001Vue\u76f8\u5173\u77e5\u8bc6\u70b9<\/h3>\n<h4>1. vue\u7ec4\u4ef6\u95f4\u901a\u4fe1&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6309\u901a\u4fe1\u573a\u666f\u5206\u7c7b&#xff08;Vue2\/Vue3\u901a\u7528&#xff09;&#xff1a;<\/p>\n<li>\u7236\u5b50\u901a\u4fe1&#xff1a;\n<ul>\n<li>\u7236\u2192\u5b50&#xff1a;props&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u4e3aproperties&#xff09;&#xff1b;<\/li>\n<li>\u5b50\u2192\u7236&#xff1a;$emit&#xff08;Vue2&#xff09;\/emit&#xff08;Vue3&#xff09;\u89e6\u53d1\u81ea\u5b9a\u4e49\u4e8b\u4ef6&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u4e3atriggerEvent&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5144\u5f1f\u901a\u4fe1&#xff1a;\n<ul>\n<li>\u4e8b\u4ef6\u603b\u7ebf&#xff08;Vue2&#xff1a;new Vue()&#xff0c;Vue3&#xff1a;mitt\u5e93&#xff09;&#xff1b;<\/li>\n<li>\u7236\u7ec4\u4ef6\u4e2d\u8f6c&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u8de8\u5c42\u7ea7\u901a\u4fe1&#xff1a;\n<ul>\n<li>Vue2&#xff1a;provide\/inject&#xff1b;<\/li>\n<li>Vue3&#xff1a;provide\/inject&#xff08;\u652f\u6301\u54cd\u5e94\u5f0f&#xff09;&#xff1b;<\/li>\n<li>Vuex\/Pinia&#xff08;\u72b6\u6001\u7ba1\u7406&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u4e3aMobx\/\u5168\u5c40\u53d8\u91cf&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5168\u5c40\u901a\u4fe1&#xff1a;\n<ul>\n<li>Vuex&#xff08;Vue2&#xff09;\/Pinia&#xff08;Vue3&#xff09;&#xff1b;<\/li>\n<li>\u5168\u5c40\u6302\u8f7d&#xff08;Vue2&#xff1a;Vue.prototype&#xff0c;Vue3&#xff1a;app.config.globalProperties&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<h4>2. vue\u751f\u547d\u5468\u671f&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;Vue2\u751f\u547d\u5468\u671f&#xff08;8\u4e2a\u6838\u5fc3\u94a9\u5b50&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u521b\u5efa\u9636\u6bb5&#xff08;\u521d\u59cb\u5316&#xff09;&#xff1a;\n<li>beforeCreate&#xff1a;\u5b9e\u4f8b\u521b\u5efa\u524d&#xff0c;data\/methods\u672a\u521d\u59cb\u5316&#xff1b;<\/li>\n<li>created&#xff1a;\u5b9e\u4f8b\u521b\u5efa\u5b8c\u6210&#xff0c;\u53ef\u8bbf\u95eedata\/methods&#xff0c;DOM\u672a\u751f\u6210&#xff1b;<\/li>\n<\/li>\n<li>\u6302\u8f7d\u9636\u6bb5&#xff08;\u6e32\u67d3DOM&#xff09;&#xff1a; 3. beforeMount&#xff1a;\u6302\u8f7d\u524d&#xff0c;\u6a21\u677f\u5df2\u7f16\u8bd1&#xff0c;DOM\u672a\u6302\u8f7d&#xff1b; 4. mounted&#xff1a;\u6302\u8f7d\u5b8c\u6210&#xff0c;DOM\u5df2\u751f\u6210&#xff0c;\u53ef\u64cd\u4f5cDOM&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u5bf9\u5e94onReady&#xff09;&#xff1b;<\/li>\n<li>\u66f4\u65b0\u9636\u6bb5&#xff08;\u6570\u636e\u53d8\u5316&#xff09;&#xff1a; 5. beforeUpdate&#xff1a;\u6570\u636e\u66f4\u65b0\u524d&#xff0c;DOM\u672a\u66f4\u65b0&#xff1b; 6. updated&#xff1a;\u6570\u636e\u66f4\u65b0\u540e&#xff0c;DOM\u5df2\u66f4\u65b0&#xff1b;<\/li>\n<li>\u9500\u6bc1\u9636\u6bb5&#xff1a; 7. beforeDestroy&#xff1a;\u9500\u6bc1\u524d&#xff0c;\u5b9e\u4f8b\u4ecd\u53ef\u7528&#xff0c;\u53ef\u6e05\u9664\u5b9a\u65f6\u5668\/\u89e3\u7ed1\u4e8b\u4ef6&#xff1b; 8. destroyed&#xff1a;\u9500\u6bc1\u5b8c\u6210&#xff0c;\u5b9e\u4f8b\u4e0d\u53ef\u7528&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;Vue3\u751f\u547d\u5468\u671f&#xff08;\u7ec4\u5408\u5f0fAPI&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u66ff\u6362\u4e3a\u94a9\u5b50\u51fd\u6570&#xff1a;onBeforeMount\u3001onMounted\u3001onBeforeUpdate\u3001onUpdated\u3001onBeforeUnmount\u3001onUnmounted&#xff1b;<\/li>\n<li>\u6838\u5fc3\u533a\u522b&#xff1a;Vue3\u53d6\u6d88beforeCreate\/created&#xff0c;\u76f4\u63a5\u5728setup\u4e2d\u7f16\u5199\u521d\u59cb\u5316\u903b\u8f91\u3002<\/li>\n<\/ul>\n<h4>3. computed\u548cwatch\u6709\u4ec0\u4e48\u533a\u522b\u5462&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027computedwatch<\/tr>\n<tbody>\n<tr>\n<td>\u6838\u5fc3\u7528\u9014<\/td>\n<td>\u8ba1\u7b97\u6d3e\u751f\u503c&#xff08;\u5982\u62fc\u63a5\u5b57\u7b26\u4e32\u3001\u683c\u5f0f\u5316\u6570\u636e&#xff09;<\/td>\n<td>\u76d1\u542c\u6570\u636e\u53d8\u5316&#xff0c;\u6267\u884c\u5f02\u6b65\/\u590d\u6742\u64cd\u4f5c&#xff08;\u5982\u8bf7\u6c42\u63a5\u53e3&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u8fd4\u56de\u503c<\/td>\n<td>\u6709\u8fd4\u56de\u503c&#xff08;\u5fc5\u987breturn&#xff09;<\/td>\n<td>\u65e0\u8fd4\u56de\u503c<\/td>\n<\/tr>\n<tr>\n<td>\u7f13\u5b58<\/td>\n<td>\u4f9d\u8d56\u6570\u636e\u4e0d\u53d8\u65f6&#xff0c;\u7f13\u5b58\u7ed3\u679c&#xff0c;\u91cd\u590d\u8bbf\u95ee\u4e0d\u91cd\u65b0\u8ba1\u7b97<\/td>\n<td>\u65e0\u7f13\u5b58&#xff0c;\u6570\u636e\u53d8\u5316\u5373\u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>\u540c\u6b65\/\u5f02\u6b65<\/td>\n<td>\u4ec5\u652f\u6301\u540c\u6b65<\/td>\n<td>\u652f\u6301\u540c\u6b65\/\u5f02\u6b65<\/td>\n<\/tr>\n<tr>\n<td>\u89e6\u53d1\u65f6\u673a<\/td>\n<td>\u4f9d\u8d56\u6570\u636e\u53d8\u5316\u65f6\u81ea\u52a8\u66f4\u65b0<\/td>\n<td>\u6570\u636e\u53d8\u5316\u65f6\u89e6\u53d1\u56de\u8c03<\/td>\n<\/tr>\n<tr>\n<td>\u4f7f\u7528\u573a\u666f<\/td>\n<td>\u7b80\u5355\u6570\u636e\u8ba1\u7b97&#xff08;\u5982fullName &#061; firstName &#043; lastName&#xff09;<\/td>\n<td>\u590d\u6742\u903b\u8f91&#xff08;\u5982\u76d1\u542c\u8f93\u5165\u6846\u53d8\u5316\u8bf7\u6c42\u641c\u7d22\u63a5\u53e3&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>4. vue\u7684\u54cd\u5e94\u5f0f\u539f\u7406\u6709\u4e86\u89e3\u5417&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;Vue2\u54cd\u5e94\u5f0f\u539f\u7406&#xff1a;<\/h5>\n<ul>\n<li>\u6838\u5fc3&#xff1a;Object.defineProperty() \u52ab\u6301\u5bf9\u8c61\u5c5e\u6027\u7684get\/set&#xff1b;<\/li>\n<li>\u6d41\u7a0b&#xff1a;\n<li>\u521d\u59cb\u5316\u65f6&#xff0c;\u904d\u5386data\u5bf9\u8c61&#xff0c;\u901a\u8fc7Object.defineProperty\u4e3a\u6bcf\u4e2a\u5c5e\u6027\u6dfb\u52a0get\/set&#xff1b;<\/li>\n<li>get&#xff1a;\u6536\u96c6\u4f9d\u8d56&#xff08;Watcher&#xff09;&#xff1b;<\/li>\n<li>set&#xff1a;\u89e6\u53d1\u4f9d\u8d56\u66f4\u65b0&#xff0c;\u901a\u77e5Watcher\u66f4\u65b0\u89c6\u56fe&#xff1b;<\/li>\n<\/li>\n<li>\u7f3a\u70b9&#xff1a;\n<li>\u65e0\u6cd5\u76d1\u542c\u6570\u7ec4\u4e0b\u6807\u4fee\u6539\u3001\u6570\u7ec4\u957f\u5ea6\u4fee\u6539&#xff1b;<\/li>\n<li>\u65e0\u6cd5\u76d1\u542c\u5bf9\u8c61\u65b0\u589e\/\u5220\u9664\u5c5e\u6027&#xff1b;<\/li>\n<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;Vue3\u54cd\u5e94\u5f0f\u539f\u7406&#xff1a;<\/h5>\n<ul>\n<li>\u6838\u5fc3&#xff1a;Proxy \u4ee3\u7406\u6574\u4e2a\u5bf9\u8c61 &#043; Reflect \u64cd\u4f5c\u5bf9\u8c61&#xff1b;<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<li>\u53ef\u76d1\u542c\u6570\u7ec4\u4e0b\u6807\/\u957f\u5ea6\u4fee\u6539&#xff1b;<\/li>\n<li>\u53ef\u76d1\u542c\u5bf9\u8c61\u65b0\u589e\/\u5220\u9664\u5c5e\u6027&#xff1b;<\/li>\n<li>\u652f\u6301Map\/Set\u7b49\u6570\u636e\u7ed3\u6784&#xff1b;<\/li>\n<\/li>\n<\/ul>\n<h4>5. Vue2\u5bf9\u6570\u7ec4\u7684\u65b9\u6cd5\u8fdb\u884c\u4e86\u4e00\u4e2a\u91cd\u5199\u662f\u5427&#xff1f;\u90a3\u6211\u52a8\u6001\u7684\u7ed9\u5bf9\u8c61\u589e\u52a0\u4e00\u4e2a\u5c5e\u6027\u53ef\u4ee5\u89e6\u53d1\u54cd\u5e94\u5f0f\u5417&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;Vue2\u91cd\u5199\u6570\u7ec4\u65b9\u6cd5&#xff1a;<\/h5>\n<ul>\n<li>\u539f\u56e0&#xff1a;Object.defineProperty\u65e0\u6cd5\u76d1\u542c\u6570\u7ec4\u4e0b\u6807\u4fee\u6539&#xff0c;\u56e0\u6b64Vue2\u91cd\u5199\u4e86\u6570\u7ec4\u76847\u4e2a\u53d8\u5f02\u65b9\u6cd5&#xff08;push\/pop\/unshift\/shift\/splice\/sort\/reverse&#xff09;&#xff1b;<\/li>\n<li>\u539f\u7406&#xff1a;\u91cd\u5199\u540e\u7684\u65b9\u6cd5\u5728\u6267\u884c\u539f\u903b\u8f91\u7684\u540c\u65f6&#xff0c;\u89e6\u53d1\u4f9d\u8d56\u66f4\u65b0&#xff08;\u901a\u77e5\u89c6\u56fe\u5237\u65b0&#xff09;&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u52a8\u6001\u7ed9\u5bf9\u8c61\u65b0\u589e\u5c5e\u6027&#xff1a;<\/h5>\n<ul>\n<li>\u9ed8\u8ba4\u4e0d\u80fd\u89e6\u53d1\u54cd\u5e94\u5f0f&#xff08;\u56e0\u4e3aObject.defineProperty\u53ea\u80fd\u52ab\u6301\u5df2\u6709\u5c5e\u6027&#xff09;&#xff1b;<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a;\n<li>Vue.set(obj, key, value)&#xff08;\u5168\u5c40\u65b9\u6cd5&#xff09;&#xff1b;<\/li>\n<li>this.$set(obj, key, value)&#xff08;\u5b9e\u4f8b\u65b9\u6cd5&#xff09;&#xff1b;<\/li>\n<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token literal-property property\">a<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u65b0\u589e\u5c5e\u6027b&#xff0c;\u65e0\u54cd\u5e94\u5f0f<\/span><br \/>\n<span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>obj<span class=\"token punctuation\">.<\/span>b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6b63\u786e\u65b9\u5f0f&#xff0c;\u89e6\u53d1\u54cd\u5e94\u5f0f<\/span><br \/>\n<span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">$set<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>obj<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;b&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h4>6. vue2\u548cvue3\u6709\u4ec0\u4e48\u533a\u522b\u5462&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u7ef4\u5ea6Vue2Vue3<\/tr>\n<tbody>\n<tr>\n<td>\u54cd\u5e94\u5f0f\u539f\u7406<\/td>\n<td>Object.defineProperty<\/td>\n<td>Proxy &#043; Reflect<\/td>\n<\/tr>\n<tr>\n<td>\u7ec4\u5408\u5f0fAPI<\/td>\n<td>\u65e0&#xff08;\u4ec5\u9009\u9879\u5f0fAPI&#xff09;<\/td>\n<td>setup &#043; \u7ec4\u5408\u5f0fAPI&#xff08;\u66f4\u7075\u6d3b\u7ec4\u7ec7\u4ee3\u7801&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u751f\u547d\u5468\u671f<\/td>\n<td>beforeCreate\/created\u7b49<\/td>\n<td>onMounted\/onUnmounted\u7b49&#xff08;\u7ec4\u5408\u5f0f&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6839\u8282\u70b9<\/td>\n<td>\u53ea\u80fd\u6709\u4e00\u4e2a\u6839\u8282\u70b9<\/td>\n<td>\u652f\u6301\u591a\u4e2a\u6839\u8282\u70b9<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd<\/td>\n<td>\u6253\u5305\u4f53\u79ef\u5927&#xff0c;\u54cd\u5e94\u5f0f\u6709\u5c40\u9650<\/td>\n<td>\u6253\u5305\u4f53\u79ef\u5c0f&#xff0c;\u54cd\u5e94\u5f0f\u66f4\u5b8c\u5584&#xff0c;\u7f16\u8bd1\u4f18\u5316<\/td>\n<\/tr>\n<tr>\n<td>TypeScript<\/td>\n<td>\u652f\u6301\u5dee<\/td>\n<td>\u539f\u751f\u652f\u6301TS&#xff0c;\u7c7b\u578b\u63a8\u65ad\u66f4\u5b8c\u5584<\/td>\n<\/tr>\n<tr>\n<td>\u5168\u5c40API<\/td>\n<td>Vue.prototype\u6302\u8f7d<\/td>\n<td>app.config.globalProperties\u6302\u8f7d<\/td>\n<\/tr>\n<tr>\n<td>\u6307\u4ee4<\/td>\n<td>v-on.native<\/td>\n<td>\u79fb\u9664&#xff0c;\u7ec4\u4ef6\u76f4\u63a5\u76d1\u542c\u539f\u751f\u4e8b\u4ef6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>7. \u5e38\u7528Hook&#xff0c;usememo\u548cmemo&#xff0c;usecallback\u600e\u4e48\u7528\u7684&#xff0c;useeffect\u60f3\u53ea\u5728\u9500\u6bc1\u65f6\u6267\u884c\u5e94\u8be5\u600e\u4e48\u5199\u4f9d\u8d56\u9879&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; Vue3\u7ec4\u5408\u5f0fAPI\/React Hook&#xff08;\u9762\u8bd5\u4e2d\u5e38\u95ee&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u4e5f\u6709\u7c7b\u4f3c\u601d\u60f3&#xff09;&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;memo&#xff08;React&#xff09;\/shallowRef&#xff08;Vue3&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u4f5c\u7528&#xff1a;\u7ec4\u4ef6\/\u6570\u636e\u6d45\u6bd4\u8f83&#xff0c;\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u6e32\u67d3&#xff1b;<\/li>\n<li>\u4f7f\u7528&#xff1a;React\u4e2d\u5305\u88f9\u7ec4\u4ef6const MemoComponent &#061; memo(Component)&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;useMemo&#xff08;React&#xff09;\/computed&#xff08;Vue3&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u4f5c\u7528&#xff1a;\u7f13\u5b58\u8ba1\u7b97\u7ed3\u679c&#xff0c;\u907f\u514d\u91cd\u590d\u8ba1\u7b97&#xff1b;<\/li>\n<li>\u8bed\u6cd5&#xff1a;const result &#061; useMemo(() &#061;&gt; \u8ba1\u7b97\u903b\u8f91, [\u4f9d\u8d56\u9879])&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;3&#xff09;useCallback&#xff08;React&#xff09;\/useCallback&#xff08;Vue3&#xff09;&#xff1a;<\/h5>\n<ul>\n<li>\u4f5c\u7528&#xff1a;\u7f13\u5b58\u51fd\u6570\u5f15\u7528&#xff0c;\u907f\u514d\u51fd\u6570\u91cd\u65b0\u521b\u5efa\u5bfc\u81f4\u5b50\u7ec4\u4ef6\u91cd\u6e32\u67d3&#xff1b;<\/li>\n<li>\u8bed\u6cd5&#xff1a;const fn &#061; useCallback(() &#061;&gt; {}, [\u4f9d\u8d56\u9879])&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;4&#xff09;useEffect\u4ec5\u5728\u9500\u6bc1\u65f6\u6267\u884c&#xff1a;<\/h5>\n<ul>\n<li>\u539f\u7406&#xff1a;\u4f9d\u8d56\u9879\u4e3a\u7a7a\u6570\u7ec4&#xff0c;\u8fd4\u56de\u6e05\u7406\u51fd\u6570&#xff1b;<\/li>\n<li>\u8bed\u6cd5&#xff1a;<span class=\"token function\">useEffect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u903b\u8f91<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u9500\u6bc1\u65f6\u6267\u884c\u7684\u903b\u8f91&#xff08;\u5982\u6e05\u9664\u5b9a\u65f6\u5668\u3001\u89e3\u7ed1\u4e8b\u4ef6&#xff09;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7a7a\u4f9d\u8d56\u9879<\/span>\n <\/li>\n<\/ul>\n<h4>8. axios\u5c01\u88c5&#xff1a;\u5c01\u88c5\u65b9\u5f0f\u3001axios\u91cc\u9762\u5982\u4f55\u53d6\u6d88\u4e00\u4e2a\u8bf7\u6c42\u5462&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;axios\u5c01\u88c5&#xff08;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528&#xff09;&#xff1a;<\/h5>\n<p><span class=\"token keyword\">import<\/span> axios <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;axios&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u521b\u5efa\u5b9e\u4f8b<\/span><br \/>\n<span class=\"token keyword\">const<\/span> service <span class=\"token operator\">&#061;<\/span> axios<span class=\"token punctuation\">.<\/span><span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">baseURL<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">VUE_APP_BASE_API<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">timeout<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">5000<\/span><span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u8bf7\u6c42\u62e6\u622a\u5668<\/span><br \/>\nservice<span class=\"token punctuation\">.<\/span>interceptors<span class=\"token punctuation\">.<\/span>request<span class=\"token punctuation\">.<\/span><span class=\"token function\">use<\/span><span class=\"token punctuation\">(<\/span><br \/>\n  <span class=\"token parameter\">config<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6dfb\u52a0token<\/span><br \/>\n    config<span class=\"token punctuation\">.<\/span>headers<span class=\"token punctuation\">.<\/span>Authorization <span class=\"token operator\">&#061;<\/span> localStorage<span class=\"token punctuation\">.<\/span><span class=\"token function\">getItem<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;token&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> config<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token parameter\">error<\/span> <span class=\"token operator\">&#061;&gt;<\/span> Promise<span class=\"token punctuation\">.<\/span><span class=\"token function\">reject<\/span><span class=\"token punctuation\">(<\/span>error<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u54cd\u5e94\u62e6\u622a\u5668<\/span><br \/>\nservice<span class=\"token punctuation\">.<\/span>interceptors<span class=\"token punctuation\">.<\/span>response<span class=\"token punctuation\">.<\/span><span class=\"token function\">use<\/span><span class=\"token punctuation\">(<\/span><br \/>\n  <span class=\"token parameter\">response<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7edf\u4e00\u5904\u7406\u54cd\u5e94\u6570\u636e<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> res <span class=\"token operator\">&#061;<\/span> response<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>res<span class=\"token punctuation\">.<\/span>code <span class=\"token operator\">!&#061;&#061;<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u9519\u8bef\u63d0\u793a<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> Promise<span class=\"token punctuation\">.<\/span><span class=\"token function\">reject<\/span><span class=\"token punctuation\">(<\/span>res<span class=\"token punctuation\">.<\/span>msg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> res<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token parameter\">error<\/span> <span class=\"token operator\">&#061;&gt;<\/span> Promise<span class=\"token punctuation\">.<\/span><span class=\"token function\">reject<\/span><span class=\"token punctuation\">(<\/span>error<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">export<\/span> <span class=\"token keyword\">default<\/span> service<span class=\"token punctuation\">;<\/span><\/p>\n<h5>&#xff08;2&#xff09;\u53d6\u6d88axios\u8bf7\u6c42&#xff1a;<\/h5>\n<ul>\n<li>\u539f\u7406&#xff1a;\u4f7f\u7528axios\u7684CancelToken&#xff08;axios v0.22.0\u540e\u63a8\u8350\u4f7f\u7528AbortController&#xff09;&#xff1b;<\/li>\n<li>\u65b9\u5f0f1&#xff08;CancelToken&#xff09;&#xff1a;<span class=\"token keyword\">const<\/span> CancelToken <span class=\"token operator\">&#061;<\/span> axios<span class=\"token punctuation\">.<\/span>CancelToken<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> source <span class=\"token operator\">&#061;<\/span> CancelToken<span class=\"token punctuation\">.<\/span><span class=\"token function\">source<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53d1\u8d77\u8bf7\u6c42<\/span><br \/>\naxios<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/data&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">cancelToken<\/span><span class=\"token operator\">:<\/span> source<span class=\"token punctuation\">.<\/span>token<br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">catch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>axios<span class=\"token punctuation\">.<\/span><span class=\"token function\">isCancel<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u8bf7\u6c42\u53d6\u6d88&#xff1a;&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53d6\u6d88\u8bf7\u6c42<\/span><br \/>\nsource<span class=\"token punctuation\">.<\/span><span class=\"token function\">cancel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u7528\u6237\u53d6\u6d88\u4e86\u8bf7\u6c42&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<li>\u65b9\u5f0f2&#xff08;AbortController&#xff0c;\u63a8\u8350&#xff09;&#xff1a;<span class=\"token keyword\">const<\/span> controller <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">AbortController<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<p>axios<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\/api\/data&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">signal<\/span><span class=\"token operator\">:<\/span> controller<span class=\"token punctuation\">.<\/span>signal<br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53d6\u6d88\u8bf7\u6c42<\/span><br \/>\ncontroller<span class=\"token punctuation\">.<\/span><span class=\"token function\">abort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h4>9. ES6\u65b0\u5185\u5bb9&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6838\u5fc3\u65b0\u7279\u6027&#xff08;\u9ad8\u9891\u8003\u70b9&#xff09;&#xff1a;<\/p>\n<li>\u53d8\u91cf\u58f0\u660e&#xff1a;let&#xff08;\u5757\u7ea7\u4f5c\u7528\u57df&#xff09;\u3001const&#xff08;\u5e38\u91cf&#xff09;&#xff1b;<\/li>\n<li>\u7bad\u5934\u51fd\u6570&#xff1a;() &#061;&gt; {}&#xff08;\u65e0this&#xff0c;\u7b80\u5316\u5199\u6cd5&#xff09;&#xff1b;<\/li>\n<li>\u89e3\u6784\u8d4b\u503c&#xff1a;const {a, b} &#061; obj\u3001const [x, y] &#061; arr&#xff1b;<\/li>\n<li>\u6a21\u677f\u5b57\u7b26\u4e32&#xff1a;&#096;hello ${name}&#096;&#xff1b;<\/li>\n<li>\u6269\u5c55\u8fd0\u7b97\u7b26&#xff1a;&#8230;arr\u3001&#8230;obj&#xff1b;<\/li>\n<li>\u7c7b\u4e0e\u7ee7\u627f&#xff1a;class\u3001extends\u3001super&#xff1b;<\/li>\n<li>\u6a21\u5757\u5316&#xff1a;import\/export&#xff1b;<\/li>\n<li>Promise&#xff1a;\u5f02\u6b65\u7f16\u7a0b&#xff1b;<\/li>\n<li>\u6570\u636e\u7ed3\u6784&#xff1a;Set&#xff08;\u53bb\u91cd&#xff09;\u3001Map&#xff08;\u952e\u503c\u5bf9&#xff09;&#xff1b;<\/li>\n<li>\u5176\u4ed6&#xff1a;\u9ed8\u8ba4\u53c2\u6570\u3001\u53ef\u9009\u94fe&#xff08;ES2020&#xff09;\u3001\u7a7a\u503c\u5408\u5e76\u8fd0\u7b97\u7b26&#xff08;ES2020&#xff09;\u3002<\/li>\n<h3>\u56db\u3001\u7f51\u7edc\u76f8\u5173\u77e5\u8bc6\u70b9<\/h3>\n<h4>1. HTTP\u72b6\u6001\u7801<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6309\u72b6\u6001\u7801\u5206\u7c7b\u8bb0\u5fc6&#xff08;\u9ad8\u9891&#xff09;&#xff1a;<\/p>\n<ul>\n<li>1xx&#xff08;\u4fe1\u606f&#xff09;&#xff1a;\u8bf7\u6c42\u5df2\u63a5\u6536&#xff0c;\u7ee7\u7eed\u5904\u7406&#xff08;\u5982100 Continue&#xff09;&#xff1b;<\/li>\n<li>2xx&#xff08;\u6210\u529f&#xff09;&#xff1a;\n<ul>\n<li>200 OK&#xff1a;\u8bf7\u6c42\u6210\u529f&#xff1b;<\/li>\n<li>201 Created&#xff1a;\u521b\u5efa\u6210\u529f&#xff08;\u5982POST\u65b0\u589e\u6570\u636e&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>3xx&#xff08;\u91cd\u5b9a\u5411&#xff09;&#xff1a;\n<ul>\n<li>301 Moved Permanently&#xff1a;\u6c38\u4e45\u91cd\u5b9a\u5411&#xff1b;<\/li>\n<li>302 Found&#xff1a;\u4e34\u65f6\u91cd\u5b9a\u5411&#xff1b;<\/li>\n<li>304 Not Modified&#xff1a;\u8d44\u6e90\u672a\u4fee\u6539&#xff0c;\u4f7f\u7528\u7f13\u5b58&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>4xx&#xff08;\u5ba2\u6237\u7aef\u9519\u8bef&#xff09;&#xff1a;\n<ul>\n<li>400 Bad Request&#xff1a;\u8bf7\u6c42\u53c2\u6570\u9519\u8bef&#xff1b;<\/li>\n<li>401 Unauthorized&#xff1a;\u672a\u6388\u6743&#xff08;\u65e0token&#xff09;&#xff1b;<\/li>\n<li>403 Forbidden&#xff1a;\u7981\u6b62\u8bbf\u95ee&#xff08;\u6743\u9650\u4e0d\u8db3&#xff09;&#xff1b;<\/li>\n<li>404 Not Found&#xff1a;\u8d44\u6e90\u4e0d\u5b58\u5728&#xff1b;<\/li>\n<li>405 Method Not Allowed&#xff1a;\u8bf7\u6c42\u65b9\u6cd5\u4e0d\u5141\u8bb8&#xff08;\u5982GET\u7528\u4e86POST&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>5xx&#xff08;\u670d\u52a1\u7aef\u9519\u8bef&#xff09;&#xff1a;\n<ul>\n<li>500 Internal Server Error&#xff1a;\u670d\u52a1\u7aef\u5185\u90e8\u9519\u8bef&#xff1b;<\/li>\n<li>502 Bad Gateway&#xff1a;\u7f51\u5173\u9519\u8bef&#xff1b;<\/li>\n<li>503 Service Unavailable&#xff1a;\u670d\u52a1\u4e0d\u53ef\u7528&#xff08;\u8fc7\u8f7d\/\u7ef4\u62a4&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>2. GET\u8bf7\u6c42\u548cPOST\u8bf7\u6c42\u7684\u533a\u522b<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027GETPOST<\/tr>\n<tbody>\n<tr>\n<td>\u8bf7\u6c42\u53c2\u6570<\/td>\n<td>\u62fc\u63a5\u5728URL\u540e&#xff08;\u67e5\u8be2\u5b57\u7b26\u4e32&#xff09;<\/td>\n<td>\u653e\u5728\u8bf7\u6c42\u4f53\u4e2d<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u957f\u5ea6<\/td>\n<td>\u53d7URL\u957f\u5ea6\u9650\u5236&#xff08;\u7ea62KB&#xff09;<\/td>\n<td>\u65e0\u9650\u5236<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168\u6027<\/td>\n<td>\u4f4e&#xff08;\u53c2\u6570\u66b4\u9732\u5728URL&#xff09;<\/td>\n<td>\u9ad8&#xff08;\u53c2\u6570\u5728\u8bf7\u6c42\u4f53&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u7f13\u5b58<\/td>\n<td>\u53ef\u7f13\u5b58&#xff08;\u6d4f\u89c8\u5668\u9ed8\u8ba4\u7f13\u5b58&#xff09;<\/td>\n<td>\u4e0d\u53ef\u7f13\u5b58<\/td>\n<\/tr>\n<tr>\n<td>\u5e42\u7b49\u6027<\/td>\n<td>\u5e42\u7b49&#xff08;\u591a\u6b21\u8bf7\u6c42\u7ed3\u679c\u4e00\u81f4&#xff09;<\/td>\n<td>\u975e\u5e42\u7b49&#xff08;\u591a\u6b21\u8bf7\u6c42\u53ef\u80fd\u521b\u5efa\u591a\u4e2a\u8d44\u6e90&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u7528\u9014<\/td>\n<td>\u67e5\u8be2\u6570\u636e&#xff08;\u5982\u5217\u8868\u3001\u8be6\u60c5&#xff09;<\/td>\n<td>\u63d0\u4ea4\/\u4fee\u6539\u6570\u636e&#xff08;\u5982\u65b0\u589e\u3001\u4fee\u6539&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>3. \u8de8\u57df&#xff1a;\u5b9e\u9645\u9879\u76ee\u4e2d\u600e\u4e48\u89e3\u51b3\u7684&#xff1f;\u8de8\u57df\u7684\u8bf7\u6c42\u4f1a\u5230\u670d\u52a1\u7aef\u5417&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;\u8de8\u57df\u5b9a\u4e49&#xff1a;<\/h5>\n<p>\u6d4f\u89c8\u5668\u540c\u6e90\u7b56\u7565\u9650\u5236&#xff08;\u534f\u8bae\u3001\u57df\u540d\u3001\u7aef\u53e3\u4efb\u4e00\u4e0d\u540c\u5373\u4e3a\u8de8\u57df&#xff09;&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u9ed8\u8ba4\u4e0d\u9650\u5236\u8de8\u57df&#xff08;\u9700\u914d\u7f6e\u5408\u6cd5\u57df\u540d&#xff09;\u3002<\/p>\n<h5>&#xff08;2&#xff09;\u5b9e\u9645\u89e3\u51b3\u8de8\u57df\u7684\u65b9\u6848&#xff1a;<\/h5>\n<li>CORS&#xff08;\u8de8\u57df\u8d44\u6e90\u5171\u4eab&#xff0c;\u63a8\u8350&#xff09;&#xff1a;\n<ul>\n<li>\u670d\u52a1\u7aef\u8bbe\u7f6e\u54cd\u5e94\u5934&#xff1a;Access-Control-Allow-Origin: *&#xff08;\u6216\u6307\u5b9a\u57df\u540d&#xff09;&#xff1b;<\/li>\n<li>\u652f\u6301\u6240\u6709\u8bf7\u6c42\u65b9\u6cd5&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u5e38\u7528&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u4ee3\u7406&#xff08;\u5f00\u53d1\u73af\u5883&#xff09;&#xff1a;\n<ul>\n<li>Vue\u9879\u76ee&#xff1a;\u914d\u7f6evue.config.js\u7684devServer.proxy&#xff1b;<\/li>\n<li>\u539f\u7406&#xff1a;\u524d\u7aef\u8bf7\u6c42\u672c\u5730\u670d\u52a1\u5668&#xff0c;\u672c\u5730\u670d\u52a1\u5668\u8f6c\u53d1\u8bf7\u6c42\u5230\u76ee\u6807\u670d\u52a1\u5668&#xff08;\u907f\u5f00\u6d4f\u89c8\u5668\u540c\u6e90\u7b56\u7565&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>JSONP&#xff1a;\n<ul>\n<li>\u539f\u7406&#xff1a;\u5229\u7528&lt;script&gt;\u6807\u7b7e\u65e0\u8de8\u57df\u9650\u5236&#xff0c;\u4ec5\u652f\u6301GET\u8bf7\u6c42&#xff1b;<\/li>\n<li>\u7f3a\u70b9&#xff1a;\u5b89\u5168\u6027\u4f4e&#xff0c;\u4ec5\u9002\u7528\u4e8e\u7b80\u5355\u573a\u666f&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>Nginx\u53cd\u5411\u4ee3\u7406&#xff1a;\n<ul>\n<li>\u751f\u4ea7\u73af\u5883\u5e38\u7528&#xff0c;Nginx\u914d\u7f6e\u8f6c\u53d1\u89c4\u5219&#xff0c;\u524d\u7aef\u8bf7\u6c42Nginx&#xff0c;Nginx\u8f6c\u53d1\u5230\u540e\u7aef&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<h5>&#xff08;3&#xff09;\u8de8\u57df\u8bf7\u6c42\u662f\u5426\u4f1a\u5230\u670d\u52a1\u7aef&#xff1f;<\/h5>\n<ul>\n<li>\u7b80\u5355\u8bf7\u6c42&#xff08;GET\/POST&#xff0c;Content-Type\u4e3aapplication\/x-www-form-urlencoded\u7b49&#xff09;&#xff1a;\u8bf7\u6c42\u4f1a\u5230\u8fbe\u670d\u52a1\u7aef&#xff0c;\u670d\u52a1\u7aef\u5904\u7406\u540e\u8fd4\u56de&#xff0c;\u6d4f\u89c8\u5668\u68c0\u67e5\u54cd\u5e94\u5934&#xff0c;\u82e5\u65e0CORS\u5219\u62e6\u622a\u54cd\u5e94&#xff1b;<\/li>\n<li>\u9884\u68c0\u8bf7\u6c42&#xff08;OPTIONS&#xff09;&#xff1a;\u5148\u53d1\u9001OPTIONS\u8bf7\u6c42\u5230\u670d\u52a1\u7aef&#xff0c;\u9a8c\u8bc1\u662f\u5426\u5141\u8bb8\u8de8\u57df&#xff0c;\u670d\u52a1\u7aef\u901a\u8fc7\u540e\u624d\u53d1\u9001\u771f\u5b9e\u8bf7\u6c42&#xff1b;<\/li>\n<li>\u7ed3\u8bba&#xff1a;\u8de8\u57df\u8bf7\u6c42\u4f1a\u5230\u8fbe\u670d\u52a1\u7aef&#xff0c;\u4f46\u6d4f\u89c8\u5668\u4f1a\u62e6\u622a\u4e0d\u7b26\u5408CORS\u7684\u54cd\u5e94\u3002<\/li>\n<\/ul>\n<h4>4. \u8f93\u5165URL\u5230\u9875\u9762\u52a0\u8f7d\u7684\u8fc7\u7a0b&#xff08;\u6d4f\u89c8\u5668\u4ece\u8f93\u5165url\u5230\u6e32\u67d3\u7684\u6574\u4e2a\u8fc7\u7a0b&#xff09;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6838\u5fc3\u6d41\u7a0b&#xff08;\u52068\u6b65&#xff09;&#xff1a;<\/p>\n<li>URL\u89e3\u6790&#xff1a;\u6d4f\u89c8\u5668\u89e3\u6790URL&#xff0c;\u5224\u65ad\u662f\u5426\u4e3a\u5408\u6cd5URL&#xff1b;<\/li>\n<li>DNS\u89e3\u6790&#xff1a;\u5c06\u57df\u540d\u8f6c\u6362\u4e3aIP\u5730\u5740&#xff08;\u4f18\u5148\u67e5\u672c\u5730\u7f13\u5b58&#xff0c;\u518d\u67e5DNS\u670d\u52a1\u5668&#xff09;&#xff1b;<\/li>\n<li>\u5efa\u7acbTCP\u8fde\u63a5&#xff1a;\u4e09\u6b21\u63e1\u624b&#xff08;SYN\u2192SYN&#043;ACK\u2192ACK&#xff09;&#xff1b;<\/li>\n<li>\u53d1\u9001HTTP\u8bf7\u6c42&#xff1a;\u6d4f\u89c8\u5668\u5411\u670d\u52a1\u7aef\u53d1\u9001\u8bf7\u6c42&#xff08;\u8bf7\u6c42\u884c\u3001\u8bf7\u6c42\u5934\u3001\u8bf7\u6c42\u4f53&#xff09;&#xff1b;<\/li>\n<li>\u670d\u52a1\u7aef\u5904\u7406\u8bf7\u6c42&#xff1a;\u670d\u52a1\u7aef\u63a5\u6536\u8bf7\u6c42&#xff0c;\u5904\u7406\u540e\u8fd4\u56de\u54cd\u5e94&#xff08;\u72b6\u6001\u7801\u3001\u54cd\u5e94\u5934\u3001\u54cd\u5e94\u4f53&#xff09;&#xff1b;<\/li>\n<li>\u5173\u95edTCP\u8fde\u63a5&#xff1a;\u56db\u6b21\u6325\u624b&#xff08;FIN\u2192ACK\u2192FIN\u2192ACK&#xff09;&#xff1b;<\/li>\n<li>\u6d4f\u89c8\u5668\u89e3\u6790\u54cd\u5e94&#xff1a;\n<ul>\n<li>\u89e3\u6790HTML&#xff1a;\u6784\u5efaDOM\u6811&#xff1b;<\/li>\n<li>\u89e3\u6790CSS&#xff1a;\u6784\u5efaCSSOM\u6811&#xff1b;<\/li>\n<li>\u5408\u5e76DOM&#043;CSSOM&#xff1a;\u6784\u5efa\u6e32\u67d3\u6811&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u9875\u9762\u6e32\u67d3&#xff1a;\n<ul>\n<li>\u5e03\u5c40&#xff08;\u56de\u6d41&#xff09;&#xff1a;\u8ba1\u7b97\u5143\u7d20\u4f4d\u7f6e\/\u5c3a\u5bf8&#xff1b;<\/li>\n<li>\u7ed8\u5236&#xff08;\u91cd\u7ed8&#xff09;&#xff1a;\u7ed8\u5236\u50cf\u7d20\u5230\u5c4f\u5e55&#xff1b;<\/li>\n<li>\u5408\u6210&#xff1a;\u5c06\u56fe\u5c42\u5408\u6210&#xff0c;\u663e\u793a\u9875\u9762&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<ul>\n<li>\u8865\u5145&#xff1a;\u5c0f\u7a0b\u5e8f\u4e2d\u6d41\u7a0b\u7c7b\u4f3c&#xff0c;\u4f46\u65e0DOM\/CSSOM&#xff0c;\u89e3\u6790\u4e3a\u81ea\u5b9a\u4e49\u6e32\u67d3\u6811\u3002<\/li>\n<\/ul>\n<h3>\u4e94\u3001\u5de5\u7a0b\u5316\u4e0e\u5de5\u5177<\/h3>\n<h4>1. \u5e38\u7528\u7684git\u547d\u4ee4\u3002\u5728\u81ea\u5df1\u4e3b\u5206\u652f\u4e0a\u4fee\u6539\u4e00\u4e9b\u5185\u5bb9\u540e\u600e\u6837\u518d\u63d0\u4ea4\u5230\u4e3b\u5206\u652f&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;\u5e38\u7528Git\u547d\u4ee4&#xff1a;<\/h5>\n<ul>\n<li>\u57fa\u7840\u64cd\u4f5c&#xff1a; git init&#xff08;\u521d\u59cb\u5316\u4ed3\u5e93&#xff09;\u3001git clone &lt;url&gt;&#xff08;\u514b\u9686\u4ed3\u5e93&#xff09;\u3001git add .&#xff08;\u6dfb\u52a0\u6240\u6709\u6587\u4ef6&#xff09;\u3001git commit -m &#034;\u5907\u6ce8&#034;&#xff08;\u63d0\u4ea4\u5230\u672c\u5730&#xff09;\u3001git push&#xff08;\u63a8\u9001\u5230\u8fdc\u7a0b&#xff09;&#xff1b;<\/li>\n<li>\u5206\u652f\u64cd\u4f5c&#xff1a; git branch&#xff08;\u67e5\u770b\u5206\u652f&#xff09;\u3001git checkout -b &lt;\u5206\u652f\u540d&gt;&#xff08;\u521b\u5efa\u5e76\u5207\u6362\u5206\u652f&#xff09;\u3001git merge &lt;\u5206\u652f\u540d&gt;&#xff08;\u5408\u5e76\u5206\u652f&#xff09;&#xff1b;<\/li>\n<li>\u5176\u4ed6&#xff1a; git pull&#xff08;\u62c9\u53d6\u8fdc\u7a0b\u4ee3\u7801&#xff09;\u3001git status&#xff08;\u67e5\u770b\u72b6\u6001&#xff09;\u3001git log&#xff08;\u67e5\u770b\u63d0\u4ea4\u8bb0\u5f55&#xff09;\u3001git reset &#8211;hard &lt;commit-id&gt;&#xff08;\u56de\u6eda\u63d0\u4ea4&#xff09;&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u4e3b\u5206\u652f\u4fee\u6539\u540e\u63d0\u4ea4\u6d41\u7a0b&#xff1a;<\/h5>\n<p><span class=\"token comment\"># 1. \u67e5\u770b\u4fee\u6539\u72b6\u6001<\/span><br \/>\n<span class=\"token function\">git<\/span> status<br \/>\n<span class=\"token comment\"># 2. \u6dfb\u52a0\u4fee\u6539\u7684\u6587\u4ef6<\/span><br \/>\n<span class=\"token function\">git<\/span> <span class=\"token function\">add<\/span> <span class=\"token builtin class-name\">.<\/span><br \/>\n<span class=\"token comment\"># 3. \u63d0\u4ea4\u5230\u672c\u5730\u4ed3\u5e93<\/span><br \/>\n<span class=\"token function\">git<\/span> commit -m <span class=\"token string\">&#034;\u4fee\u6539\u4e86xxx\u529f\u80fd&#034;<\/span><br \/>\n<span class=\"token comment\"># 4. \u62c9\u53d6\u8fdc\u7a0b\u4e3b\u5206\u652f\u6700\u65b0\u4ee3\u7801&#xff08;\u907f\u514d\u51b2\u7a81&#xff09;<\/span><br \/>\n<span class=\"token function\">git<\/span> pull origin main&#xff08;\u6216master&#xff09;<br \/>\n<span class=\"token comment\"># 5. \u63a8\u9001\u672c\u5730\u63d0\u4ea4\u5230\u8fdc\u7a0b\u4e3b\u5206\u652f<\/span><br \/>\n<span class=\"token function\">git<\/span> push origin main&#xff08;\u6216master&#xff09;<\/p>\n<ul>\n<li>\u8865\u5145&#xff1a;\u89c4\u8303\u6d41\u7a0b\u5e94\u5148\u521b\u5efafeature\u5206\u652f&#xff0c;\u4fee\u6539\u540e\u5408\u5e76\u5230\u4e3b\u5206\u652f&#xff0c;\u907f\u514d\u76f4\u63a5\u4fee\u6539\u4e3b\u5206\u652f\u3002<\/li>\n<\/ul>\n<h4>2. \u4e3a\u4ec0\u4e48vite\u6bd4webpack\u6253\u5305\u5feb\u5462&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u6838\u5fc3\u539f\u56e0&#xff1a;\u6784\u5efa\u539f\u7406\u4e0d\u540c&#xff0c;Vite\u91c7\u7528\u201c\u6309\u9700\u7f16\u8bd1\u201d&#xff0c;Webpack\u91c7\u7528\u201c\u5168\u91cf\u7f16\u8bd1\u201d&#xff1b;<\/p>\n<li>\u5f00\u53d1\u9636\u6bb5&#xff1a;\n<ul>\n<li>Webpack&#xff1a;\u542f\u52a8\u65f6\u6253\u5305\u6240\u6709\u6a21\u5757&#xff0c;\u751f\u6210bundle&#xff0c;\u542f\u52a8\u6162&#xff1b;<\/li>\n<li>Vite&#xff1a;\u57fa\u4e8eESModule&#xff0c;\u4e0d\u6253\u5305&#xff0c;\u542f\u52a8\u65f6\u4ec5\u542f\u52a8\u670d\u52a1\u5668&#xff0c;\u8bf7\u6c42\u65f6\u6309\u9700\u7f16\u8bd1\u6a21\u5757&#xff0c;\u542f\u52a8\u5feb&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u70ed\u66f4\u65b0&#xff1a;\n<ul>\n<li>Webpack&#xff1a;\u70ed\u66f4\u65b0\u9700\u91cd\u65b0\u6253\u5305\u76f8\u5173\u6a21\u5757&#xff0c;\u901f\u5ea6\u6162&#xff1b;<\/li>\n<li>Vite&#xff1a;\u70ed\u66f4\u65b0\u4ec5\u66f4\u65b0\u4fee\u6539\u7684\u6a21\u5757&#xff0c;\u901f\u5ea6\u5feb&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u751f\u4ea7\u9636\u6bb5&#xff1a;\n<ul>\n<li>Vite\u4f7f\u7528Rollup\u6253\u5305&#xff0c;\u6bd4Webpack\u66f4\u8f7b\u91cf&#xff0c;\u6253\u5305\u4f53\u79ef\u66f4\u5c0f&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5176\u4ed6&#xff1a;Vite\u5185\u7f6e\u4f18\u5316&#xff08;\u5982\u9884\u6784\u5efa\u4f9d\u8d56&#xff09;&#xff0c;\u51cf\u5c11\u91cd\u590d\u7f16\u8bd1\u3002<\/li>\n<h3>\u516d\u3001\u79fb\u52a8\u7aef\/\u5c0f\u7a0b\u5e8f\u9002\u914d\u4e0e\u6027\u80fd\u4f18\u5316<\/h3>\n<h4>1. \u5982\u4f55\u9002\u914d\u591a\u79cd\u4e0d\u540c\u7684\u624b\u673a\u5c4f\u5e55\u5927\u5c0f&#xff1f;\u81ea\u9002\u5e94\u5e03\u5c40\u6709\u54ea\u4e9b\u65b9\u6cd5\u5462&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u5c0f\u7a0b\u5e8f\u9002\u914d\u6838\u5fc3\u65b9\u6cd5&#xff1a;<\/p>\n<li>rpx\u5355\u4f4d&#xff08;\u63a8\u8350&#xff09;&#xff1a;\n<ul>\n<li>\u5c0f\u7a0b\u5e8f\u7279\u6709\u5355\u4f4d&#xff0c;1rpx &#061; \u5c4f\u5e55\u5bbd\u5ea6\/750&#xff0c;\u9002\u914d\u6240\u6709\u5c4f\u5e55&#xff1b;<\/li>\n<li>\u8bbe\u8ba1\u7a3f750px \u2192 1:1\u4f7f\u7528rpx&#xff0c;\u5982\u8bbe\u8ba1\u7a3f375px \u2192 375rpx&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>flex\u5e03\u5c40&#xff1a;\n<ul>\n<li>\u5f39\u6027\u5e03\u5c40&#xff0c;\u5b50\u5143\u7d20\u901a\u8fc7flex:1\u81ea\u9002\u5e94\u5269\u4f59\u7a7a\u95f4&#xff0c;\u9002\u914d\u4e0d\u540c\u5c4f\u5e55&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5a92\u4f53\u67e5\u8be2&#xff1a;\n<ul>\n<li>&#064;media (min-width: 750px) { &#8230; }&#xff0c;\u9488\u5bf9\u4e0d\u540c\u5c4f\u5e55\u5c3a\u5bf8\u8bbe\u7f6e\u6837\u5f0f&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>rem\u5355\u4f4d&#xff1a;\n<ul>\n<li>\u6839\u5143\u7d20font-size\u8bbe\u4e3a\u5c4f\u5e55\u5bbd\u5ea6\/10&#xff0c;\u5b50\u5143\u7d20\u7528rem&#xff0c;\u5c0f\u7a0b\u5e8f\u4e2d\u53ef\u7ed3\u5408postcss-px-to-viewport&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>viewport\u9002\u914d&#xff1a;\n<ul>\n<li>\u5c0f\u7a0b\u5e8f\u9ed8\u8ba4viewport-fit&#061;cover&#xff0c;\u9002\u914d\u5218\u6d77\u5c4f&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<h4>2. \u8bb2\u8bb2\u957f\u5217\u8868\u7684\u6e32\u67d3&#xff1f;\u9664\u4e86\u76d1\u542c\u6eda\u52a8\u5b9e\u73b0&#xff0c;\u4f60\u8fd8\u77e5\u9053\u4ec0\u4e48\u65b9\u6cd5\u5417&#xff1f;\u6eda\u52a8\u5230\u5e95\u90e8\u5168\u90e8\u6e32\u67d3\u51fa\u6765\u4f1a\u4e0d\u4f1a\u5361&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<h5>&#xff08;1&#xff09;\u957f\u5217\u8868\u6e32\u67d3\u95ee\u9898&#xff1a;<\/h5>\n<ul>\n<li>\u5168\u90e8\u6e32\u67d3DOM\u4f1a\u5bfc\u81f4DOM\u8282\u70b9\u8fc7\u591a&#xff0c;\u5360\u7528\u5185\u5b58&#xff0c;\u6eda\u52a8\u5361\u987f&#xff08;\u91cd\u7ed8\/\u56de\u6d41\u9891\u7e41&#xff09;&#xff1b;<\/li>\n<\/ul>\n<h5>&#xff08;2&#xff09;\u4f18\u5316\u65b9\u6848&#xff08;\u5c0f\u7a0b\u5e8f\u9ad8\u9891&#xff09;&#xff1a;<\/h5>\n<li>\u865a\u62df\u5217\u8868&#xff08;\u53ef\u89c6\u533a\u57df\u6e32\u67d3&#xff09;&#xff1a;\n<ul>\n<li>\u6838\u5fc3&#xff1a;\u53ea\u6e32\u67d3\u53ef\u89c6\u533a\u57df\u5185\u7684\u5217\u8868\u9879&#xff0c;\u6eda\u52a8\u65f6\u52a8\u6001\u66ff\u6362\u5185\u5bb9&#xff1b;<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u539f\u751f&#xff1a;recycle-view\u7ec4\u4ef6&#xff1b;<\/li>\n<li>\u7b2c\u4e09\u65b9&#xff1a;vue-virtual-scroller&#xff08;Vue&#xff09;\u3001react-window&#xff08;React&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5206\u9875\u52a0\u8f7d&#xff1a;\n<ul>\n<li>\u76d1\u542c\u6eda\u52a8\u5230\u5e95\u90e8&#xff0c;\u52a0\u8f7d\u4e0b\u4e00\u9875\u6570\u636e&#xff0c;\u6bcf\u6b21\u53ea\u6e32\u67d3\u90e8\u5206\u6570\u636e&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u61d2\u52a0\u8f7d&#xff1a;\n<ul>\n<li>\u56fe\u7247\u61d2\u52a0\u8f7d&#xff08;\u5c0f\u7a0b\u5e8flazy-load\u5c5e\u6027&#xff09;&#xff1b;<\/li>\n<li>\u5217\u8868\u9879\u61d2\u52a0\u8f7d&#xff08;\u8fdb\u5165\u53ef\u89c6\u533a\u57df\u518d\u6e32\u67d3&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u51cf\u5c11DOM\u5c42\u7ea7&#xff1a;\n<ul>\n<li>\u7b80\u5316\u5217\u8868\u9879\u7ed3\u6784&#xff0c;\u51cf\u5c11\u5d4c\u5957&#xff0c;\u964d\u4f4e\u91cd\u7ed8\/\u56de\u6d41\u5f00\u9500&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<h4>3. \u9664\u4e86\u61d2\u52a0\u8f7d&#xff0c;\u4f60\u8fd8\u77e5\u9053\u5176\u4ed6\u4f18\u5316\u52a0\u8f7d\u901f\u5ea6\u7684\u65b9\u6848\u5417&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u5c0f\u7a0b\u5e8f\/\u524d\u7aef\u52a0\u8f7d\u901f\u5ea6\u4f18\u5316\u65b9\u6848&#xff1a;<\/p>\n<li>\u8d44\u6e90\u4f18\u5316&#xff1a;\n<ul>\n<li>\u56fe\u7247\u4f18\u5316&#xff1a;\u538b\u7f29\u56fe\u7247&#xff08;tinypng&#xff09;\u3001\u4f7f\u7528webp\u683c\u5f0f\u3001CDN\u52a0\u8f7d&#xff1b;<\/li>\n<li>\u4ee3\u7801\u538b\u7f29&#xff1a;\u538b\u7f29JS\/CSS&#xff0c;\u79fb\u9664\u65e0\u7528\u4ee3\u7801&#xff08;Tree Shaking&#xff09;&#xff1b;<\/li>\n<li>\u5206\u5305\u52a0\u8f7d&#xff1a;\u5c0f\u7a0b\u5e8f\u5206\u5305&#xff0c;\u9996\u5c4f\u52a0\u8f7d\u4e3b\u5305&#xff0c;\u5176\u4ed6\u5305\u6309\u9700\u52a0\u8f7d&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u7f13\u5b58\u4f18\u5316&#xff1a;\n<ul>\n<li>\u63a5\u53e3\u7f13\u5b58&#xff1a;\u672c\u5730\u7f13\u5b58\u63a5\u53e3\u6570\u636e&#xff08;wx.setStorage&#xff09;&#xff0c;\u907f\u514d\u91cd\u590d\u8bf7\u6c42&#xff1b;<\/li>\n<li>\u9759\u6001\u8d44\u6e90\u7f13\u5b58&#xff1a;\u5229\u7528HTTP\u7f13\u5b58&#xff08;304&#xff09;\u3001\u5c0f\u7a0b\u5e8f\u7f13\u5b58&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u9884\u52a0\u8f7d&#xff1a;\n<ul>\n<li>\u9884\u52a0\u8f7d\u4e0b\u4e00\u9875\u8d44\u6e90&#xff08;\u5982\u70b9\u51fb\u524d\u9884\u52a0\u8f7d&#xff09;&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u5f02\u6b65\u52a0\u8f7d&#xff1a;\n<ul>\n<li>\u975e\u6838\u5fc3\u811a\u672c\u5f02\u6b65\u52a0\u8f7d&#xff08;async\/defer&#xff09;&#xff1b;<\/li>\n<li>\u5c0f\u7a0b\u5e8f\u4e2d\u4f7f\u7528wx.loadSubpackage\u9884\u52a0\u8f7d\u5206\u5305&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u670d\u52a1\u7aef\u4f18\u5316&#xff1a;\n<ul>\n<li>\u63a5\u53e3\u5408\u5e76&#xff1a;\u51cf\u5c11\u8bf7\u6c42\u6b21\u6570&#xff1b;<\/li>\n<li>\u63a5\u53e3\u7f13\u5b58&#xff1a;\u670d\u52a1\u7aef\u7f13\u5b58\u70ed\u70b9\u6570\u636e&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<h3>\u4e03\u3001\u8868\u5355\u76f8\u5173\u77e5\u8bc6\u70b9<\/h3>\n<h4>1. \u8c08\u8c08\u5185\u90e8\u8868\u5355\u7ec4\u4ef6\u548cFormily\u4e4b\u95f4\u7684\u5dee\u5f02&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u7279\u6027\u5185\u90e8\u8868\u5355\u7ec4\u4ef6Formily<\/tr>\n<tbody>\n<tr>\n<td>\u5b9a\u4f4d<\/td>\n<td>\u57fa\u7840\u8868\u5355\u7ec4\u4ef6&#xff08;\u8f93\u5165\u6846\u3001\u9009\u62e9\u5668\u7b49&#xff09;<\/td>\n<td>\u9ad8\u6027\u80fd\u8868\u5355\u89e3\u51b3\u65b9\u6848&#xff08;\u57fa\u4e8eJSON Schema&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6838\u5fc3\u80fd\u529b<\/td>\n<td>\u57fa\u7840\u8f93\u5165\/\u6821\u9a8c&#xff0c;\u9700\u624b\u52a8\u7f16\u5199\u8054\u52a8\/\u6821\u9a8c\u903b\u8f91<\/td>\n<td>\u5185\u7f6e\u8054\u52a8\u3001\u6821\u9a8c\u3001\u72b6\u6001\u7ba1\u7406&#xff0c;\u652f\u6301\u590d\u6742\u8868\u5355<\/td>\n<\/tr>\n<tr>\n<td>\u5f00\u53d1\u6548\u7387<\/td>\n<td>\u7b80\u5355\u8868\u5355\u5feb&#xff0c;\u590d\u6742\u8868\u5355\u9700\u5927\u91cf\u81ea\u5b9a\u4e49\u903b\u8f91<\/td>\n<td>\u590d\u6742\u8868\u5355\u5f00\u53d1\u6548\u7387\u9ad8&#xff0c;\u914d\u7f6e\u5316\u5f00\u53d1<\/td>\n<\/tr>\n<tr>\n<td>\u6269\u5c55\u6027<\/td>\n<td>\u9700\u624b\u52a8\u6269\u5c55&#xff08;\u5982\u81ea\u5b9a\u4e49\u6821\u9a8c\u3001\u8054\u52a8&#xff09;<\/td>\n<td>\u9ad8\u6269\u5c55\u6027&#xff0c;\u652f\u6301\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u3001\u6821\u9a8c\u89c4\u5219<\/td>\n<\/tr>\n<tr>\n<td>\u72b6\u6001\u7ba1\u7406<\/td>\n<td>\u9700\u624b\u52a8\u7ef4\u62a4\u8868\u5355\u72b6\u6001&#xff08;\u5982value\u3001error&#xff09;<\/td>\n<td>\u81ea\u52a8\u7ba1\u7406\u8868\u5355\u72b6\u6001&#xff0c;\u652f\u6301\u8868\u5355\u5feb\u7167\/\u56de\u6eda<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u7b80\u5355\u8868\u5355&#xff08;\u5982\u767b\u5f55\u3001\u6ce8\u518c&#xff09;<\/td>\n<td>\u590d\u6742\u8868\u5355&#xff08;\u5982\u914d\u7f6e\u9875\u3001\u591a\u6b65\u9aa4\u8868\u5355&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>2. \u5185\u90e8\u7684\u8868\u5355\u7ec4\u4ef6\u600e\u4e48\u5b9e\u73b0\u4e5f\u8054\u52a8\u5173\u7cfb&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u8868\u5355\u8054\u52a8\u6838\u5fc3&#xff1a;\u76d1\u542c\u4e00\u4e2a\u8868\u5355\u5b57\u6bb5\u53d8\u5316&#xff0c;\u4fee\u6539\u53e6\u4e00\u4e2a\u5b57\u6bb5\u7684\u72b6\u6001&#xff08;\u503c\/\u7981\u7528\/\u53ef\u9009\u503c&#xff09;&#xff1b;<\/p>\n<h5>&#xff08;1&#xff09;Vue\/\u5c0f\u7a0b\u5e8f\u5b9e\u73b0\u65b9\u5f0f&#xff1a;<\/h5>\n<p><span class=\"token comment\">\/\/ \u793a\u4f8b&#xff1a;\u9009\u62e9\u7701\u4efd\u540e&#xff0c;\u8054\u52a8\u66f4\u65b0\u57ce\u5e02\u9009\u9879<\/span><br \/>\n<span class=\"token comment\">\/\/ 1. \u76d1\u542c\u7701\u4efd\u5b57\u6bb5\u53d8\u5316<\/span><br \/>\n<span class=\"token literal-property property\">watch<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">province<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">val<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ 2. \u6839\u636e\u7701\u4efd\u83b7\u53d6\u57ce\u5e02\u5217\u8868<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> cityList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>cityData<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<\/span> <span class=\"token operator\">&#061;&gt;<\/span> item<span class=\"token punctuation\">.<\/span>province <span class=\"token operator\">&#061;&#061;&#061;<\/span> val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ 3. \u66f4\u65b0\u57ce\u5e02\u9009\u9879<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>cityOptions <span class=\"token operator\">&#061;<\/span> cityList<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ 4. \u91cd\u7f6e\u57ce\u5e02\u503c&#xff08;\u53ef\u9009&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>city <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ 5. \u7981\u7528\/\u542f\u7528\u5176\u4ed6\u5b57\u6bb5&#xff08;\u53ef\u9009&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>disabledField <span class=\"token operator\">&#061;<\/span> val <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token string\">&#039;\u5317\u4eac&#039;<\/span><span class=\"token punctuation\">;<\/span><br 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