{"id":40741,"date":"2025-05-30T11:14:49","date_gmt":"2025-05-30T03:14:49","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/40741.html"},"modified":"2025-05-30T11:14:49","modified_gmt":"2025-05-30T03:14:49","slug":"%e5%89%8d%e7%ab%af%e5%85%ab%e8%82%a1%e4%b9%8bhtml","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/40741.html","title":{"rendered":"\u524d\u7aef\u516b\u80a1\u4e4bHTML"},"content":{"rendered":"<h2 id=\"article-title\">\u524d\u7aef\u79d8\u7c4d-HTML\u7bc7<\/h2>\n<h4 id=\"1.%20src%E5%92%8Chref%E7%9A%84%E5%8C%BA%E5%88%AB\">1. src\u548chref\u7684\u533a\u522b<\/h4>\n<p>src \u7528\u4e8e<span style=\"background-color:#fefcd8\">\u66ff\u6362\u5f53\u524d\u5143\u7d20<\/span>&#xff0c;href \u7528\u4e8e\u5728\u5f53\u524d\u6587\u6863\u548c\u5f15\u7528\u8d44\u6e90\u4e4b\u95f4<span style=\"background-color:#fefcd8\">\u786e\u7acb\u8054\u7cfb<\/span>\u3002 &#xff08;1&#xff09;src src \u662f source \u7684\u7f29\u5199&#xff0c;\u6307\u5411<span style=\"background-color:#fefcd8\">\u5916\u90e8\u8d44\u6e90\u7684\u4f4d\u7f6e<\/span>&#xff0c;\u6307\u5411\u7684\u5185\u5bb9\u5c06\u4f1a\u5d4c\u5165\u5230\u6587\u6863\u4e2d\u5f53\u524d\u6807\u7b7e\u6240\u5728\u4f4d\u7f6e&#xff1b;\u5728\u8bf7\u6c42 src \u8d44\u6e90\u65f6\u4f1a\u5c06\u5176\u6307\u5411\u7684\u8d44\u6e90<span style=\"background-color:#ffd900\">\u4e0b\u8f7d\u5e76\u5e94\u7528\u5230\u6587\u6863\u5185<\/span>&#xff0c;\u4f8b\u5982 js \u811a\u672c&#xff0c;img \u56fe\u7247\u548c frame \u7b49\u5143\u7d20\u3002<\/p>\n<p>&lt;script src &#061;\u201djs.js\u201d&gt;&lt;\/script&gt; 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style=\"background-color:#ffd900\">\u5f02\u6b65\u52a0\u8f7d\u5916\u90e8\u7684JS\u811a\u672c\u6587\u4ef6&#xff0c;\u5b83\u4eec\u90fd\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u7684\u89e3\u6790<\/span>&#xff0c;\u5176\u533a\u522b\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u6267\u884c\u987a\u5e8f&#xff1a;<\/li>\n<\/ul>\n<li>\u591a\u4e2a\u5e26defer\u5c5e\u6027\u7684\u6807\u7b7e&#xff0c;\u6309\u7167\u52a0\u8f7d\u987a\u5e8f\u6267\u884c&#xff1b;<\/li>\n<li>\u591a\u4e2a\u5e26async\u5c5e\u6027\u7684\u6807\u7b7e&#xff0c;\u4e0d\u80fd\u4fdd\u8bc1\u52a0\u8f7d\u7684\u987a\u5e8f&#xff1b;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/li>\n<ul>\n<li>\u811a\u672c\u662f\u5426\u5e76\u884c\u6267\u884c&#xff1a;<\/li>\n<\/ul>\n<li>defer\u5c5e\u6027&#xff0c;\u52a0\u8f7d\u540e\u7eed\u6587\u6863\u7684\u8fc7\u7a0b\u548cjs\u811a\u672c\u7684\u52a0\u8f7d(\u6b64\u65f6\u4ec5\u52a0\u8f7d\u4e0d\u6267\u884c)\u662f\u5e76\u884c\u8fdb\u884c\u7684(\u5f02\u6b65)&#xff0c;js\u811a\u672c\u9700\u8981\u7b49\u5230\u6587\u6863\u6240\u6709\u5143\u7d20\u89e3\u6790\u5b8c\u6210\u4e4b\u540e\u624d\u6267\u884c&#xff0c;DOMContentLoaded\u4e8b\u4ef6\u89e6\u53d1\u6267\u884c\u4e4b\u524d\u3002<\/li>\n<li>async\u5c5e\u6027&#xff0c;\u8868\u793a\u540e\u7eed\u6587\u6863\u7684\u52a0\u8f7d\u548c\u6267\u884c\u4e0ejs\u811a\u672c\u7684\u52a0\u8f7d\u548c\u6267\u884c\u662f\u5e76\u884c\u8fdb\u884c\u7684&#xff0c;\u5373\u5f02\u6b65\u6267\u884c&#xff1b;<\/li>\n<h4><\/h4>\n<h4>5. 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&#xff08;1&#xff09;\u65b0\u589e\u8bed\u4e49\u5316\u6807\u7b7e&#xff1a;nav\u3001header\u3001footer\u3001aside\u3001section\u3001article &#xff08;2&#xff09;\u97f3\u9891\u3001\u89c6\u9891\u6807\u7b7e&#xff1a;audio\u3001video &#xff08;3&#xff09;\u6570\u636e\u5b58\u50a8&#xff1a;localStorage\u3001sessionStorage &#xff08;4&#xff09;canvas&#xff08;\u753b\u5e03&#xff09;\u3001Geolocation&#xff08;\u5730\u7406\u5b9a\u4f4d&#xff09;\u3001websocket&#xff08;\u901a\u4fe1\u534f\u8bae&#xff09; &#xff08;5&#xff09;input\u6807\u7b7e\u65b0\u589e\u5c5e\u6027&#xff1a;placeholder\u3001autocomplete\u3001autofocus\u3001required &#xff08;6&#xff09;history API&#xff1a;go\u3001forward\u3001back\u3001pushstate  \u79fb\u9664\u7684\u5143\u7d20\u6709&#xff1a; \u25cf\u7eaf\u8868\u73b0\u7684\u5143\u7d20&#xff1a;basefont&#xff0c;big&#xff0c;center&#xff0c;font, s&#xff0c;strike&#xff0c;tt&#xff0c;u; \u25cf\u5bf9\u53ef\u7528\u6027\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u7684\u5143\u7d20&#xff1a;frame&#xff0c;frameset&#xff0c;noframes&#xff1b;<\/p>\n<h4>7. img\u7684srcset\u5c5e\u6027\u7684\u4f5c\u2f64&#xff1f;<\/h4>\n<p> \u54cd\u5e94\u5f0f\u9875\u9762\u4e2d\u7ecf\u5e38\u7528\u5230\u6839\u636e\u5c4f\u5e55\u5bc6\u5ea6\u8bbe\u7f6e\u4e0d\u540c\u7684\u56fe\u7247\u3002\u8fd9\u65f6\u5c31\u7528\u5230\u4e86 img \u6807\u7b7e\u7684srcset\u5c5e\u6027\u3002srcset\u5c5e\u6027\u7528\u4e8e\u8bbe\u7f6e\u4e0d\u540c\u5c4f\u5e55\u5bc6\u5ea6\u4e0b&#xff0c;img \u4f1a\u81ea\u52a8\u52a0\u8f7d\u4e0d\u540c\u7684\u56fe\u7247\u3002\u7528\u6cd5\u5982\u4e0b&#xff1a; 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sizes\u5c31\u662f\u6307\u9ed8\u8ba4\u663e\u793a128px, \u5982\u679c\u89c6\u533a\u5bbd\u5ea6\u5927\u4e8e360px, \u5219\u663e\u793a340px\u3002<\/p>\n<h4> 8. \u884c\u5185\u5143\u7d20\u6709\u54ea\u4e9b&#xff1f;\u5757\u7ea7\u5143\u7d20\u6709\u54ea\u4e9b&#xff1f; \u7a7a(void)\u5143\u7d20\u6709\u90a3\u4e9b&#xff1f;<\/h4>\n<p>\u25cf\u884c\u5185\u5143\u7d20\u6709&#xff1a;a b span img input select strong&#xff1b; \u25cf\u5757\u7ea7\u5143\u7d20\u6709&#xff1a;div ul ol li dl dt dd h1 h2 h3 h4 h5 h6 p&#xff1b;  \u7a7a\u5143\u7d20&#xff0c;\u5373\u6ca1\u6709\u5185\u5bb9\u7684HTML\u5143\u7d20\u3002\u7a7a\u5143\u7d20\u662f\u5728\u5f00\u59cb\u6807\u7b7e\u4e2d\u5173\u95ed\u7684&#xff0c;\u4e5f\u5c31\u662f\u7a7a\u5143\u7d20\u6ca1\u6709\u95ed\u5408\u6807\u7b7e&#xff1a; \u25cf\u5e38\u89c1\u7684\u6709&#xff1a;&lt;br&gt;\u3001&lt;hr&gt;\u3001&lt;img&gt;\u3001&lt;input&gt;\u3001&lt;link&gt;\u3001&lt;meta&gt;&#xff1b; \u25cf\u9c9c\u89c1\u7684\u6709&#xff1a;&lt;area&gt;\u3001&lt;base&gt;\u3001&lt;col&gt;\u3001&lt;colgroup&gt;\u3001&lt;command&gt;\u3001&lt;embed&gt;\u3001&lt;keygen&gt;\u3001&lt;param&gt;\u3001&lt;source&gt;\u3001&lt;track&gt;\u3001&lt;wbr&gt;\u3002<\/p>\n<h4> 9. \u5bf9 web worker \u7684\u7406\u89e3<\/h4>\n<p> \u5728 HTML \u9875\u9762\u4e2d&#xff0c;\u5982\u679c\u5728\u6267\u884c\u811a\u672c\u65f6&#xff0c;\u9875\u9762\u7684\u72b6\u6001\u662f\u4e0d\u53ef\u76f8\u5e94\u7684&#xff0c;\u76f4\u5230\u811a\u672c\u6267\u884c\u5b8c\u6210\u540e&#xff0c;\u9875\u9762\u624d\u53d8\u6210\u53ef\u76f8\u5e94\u3002web worker \u662f\u8fd0\u884c\u5728\u540e\u53f0\u7684 js&#xff0c;\u72ec\u7acb\u4e8e\u5176\u4ed6\u811a\u672c&#xff0c;\u4e0d\u4f1a\u5f71\u54cd\u9875\u9762\u7684\u6027\u80fd\u3002 \u5e76\u4e14\u901a\u8fc7 postMessage \u5c06\u7ed3\u679c\u56de\u4f20\u5230\u4e3b\u7ebf\u7a0b\u3002\u8fd9\u6837\u5728\u8fdb\u884c\u590d\u6742\u64cd\u4f5c\u7684\u65f6\u5019&#xff0c;\u5c31\u4e0d\u4f1a\u963b\u585e\u4e3b\u7ebf\u7a0b\u4e86\u3002  \u5982\u4f55\u521b\u5efa web worker&#xff1a; 1\u68c0\u6d4b\u6d4f\u89c8\u5668\u5bf9\u4e8e web worker \u7684\u652f\u6301\u6027 2\u521b\u5efa web worker \u6587\u4ef6&#xff08;js&#xff0c;\u56de\u4f20\u51fd\u6570\u7b49&#xff09; 3\u521b\u5efa web worker \u5bf9\u8c61<\/p>\n<h4> 10. 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style=\"background-color:transparent\"> 18. \u6d4f\u89c8\u5668\u4e71\u7801\u7684\u539f\u56e0\u662f\u4ec0\u4e48&#xff1f;\u5982\u4f55\u89e3\u51b3&#xff1f;<\/h4>\n<p> \u4ea7\u751f\u4e71\u7801\u7684\u539f\u56e0&#xff1a; \u25cf\u7f51\u9875\u6e90\u4ee3\u7801\u662fgbk\u7684\u7f16\u7801&#xff0c;\u800c\u5185\u5bb9\u4e2d\u7684\u4e2d\u6587\u5b57\u662futf-8\u7f16\u7801\u7684&#xff0c;\u8fd9\u6837\u6d4f\u89c8\u5668\u6253\u5f00\u5373\u4f1a\u51fa\u73b0html\u4e71\u7801&#xff0c;\u53cd\u4e4b\u4e5f\u4f1a\u51fa\u73b0\u4e71\u7801&#xff1b; \u25cfhtml\u7f51\u9875\u7f16\u7801\u662fgbk&#xff0c;\u800c\u7a0b\u5e8f\u4ece\u6570\u636e\u5e93\u4e2d\u8c03\u51fa\u5448\u73b0\u662futf-8\u7f16\u7801\u7684\u5185\u5bb9\u4e5f\u4f1a\u9020\u6210\u7f16\u7801\u4e71\u7801&#xff1b; \u25cf\u6d4f\u89c8\u5668\u4e0d\u80fd\u81ea\u52a8\u68c0\u6d4b\u7f51\u9875\u7f16\u7801&#xff0c;\u9020\u6210\u7f51\u9875\u4e71\u7801\u3002  \u89e3\u51b3\u529e\u6cd5&#xff1a; \u25cf\u4f7f\u7528\u8f6f\u4ef6\u7f16\u8f91HTML\u7f51\u9875\u5185\u5bb9&#xff1b; 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