{"id":73669,"date":"2026-02-08T07:09:30","date_gmt":"2026-02-07T23:09:30","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73669.html"},"modified":"2026-02-08T07:09:30","modified_gmt":"2026-02-07T23:09:30","slug":"javascript%e8%af%ad%e7%9b%b2%ef%bc%9a%e5%bd%93%e4%bb%a3%e7%a0%81%e4%bc%9a%e5%86%99%e5%8d%b4%e4%b8%8d%e6%87%82","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73669.html","title":{"rendered":"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2"},"content":{"rendered":"<h4>JavaScript&#xff1a;\u7f16\u7a0b\u4e16\u754c\u4e2d\u7684\u201c\u8bed\u76f2\u201d\u73b0\u8c61<\/h4>\n<p>JavaScript\u4f5c\u4e3a\u4e00\u95e8\u52a8\u6001\u5f31\u7c7b\u578b\u8bed\u8a00&#xff0c;\u5176\u7075\u6d3b\u6027\u80cc\u540e\u6f5c\u85cf\u7740\u8bf8\u591a\u8ba4\u77e5\u9677\u9631&#xff0c;\u5e38\u4f7f\u5f00\u53d1\u8005\u9677\u5165\u201c\u8bed\u76f2\u201d\u72b6\u6001\u2014\u2014\u770b\u4f3c\u80fd\u8bfb\u5199\u4ee3\u7801&#xff0c;\u5b9e\u5219\u5bf9\u5e95\u5c42\u673a\u5236\u4e00\u77e5\u534a\u89e3\u3002\u4ee5\u4e0b\u4e09\u4e2a\u5178\u578b\u573a\u666f\u63ed\u793a\u4e86\u8fd9\u79cd\u8ba4\u77e5\u76f2\u533a&#xff1a;<\/p>\n<hr \/>\n<h5>1. \u7c7b\u578b\u8f6c\u6362\u7684\u9b54\u672f\u9677\u9631<\/h5>\n<p>console.log([] &#043; []) \/\/ &#034;&#034;<br \/>\nconsole.log([] &#043; {}) \/\/ &#034;[object Object]&#034;<br \/>\nconsole.log({} &#043; []) \/\/ 0<\/p>\n<p>\u6b64\u5904\u66b4\u9732\u4e86\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u7684\u8352\u8c2c\u6027&#xff1a;<\/p>\n<ul>\n<li>\u6570\u7ec4\u76f8\u52a0\u65f6\u89e6\u53d1Array.prototype.toString()\u8f6c\u6362<\/li>\n<li>\u5bf9\u8c61\u53c2\u4e0e\u8fd0\u7b97\u65f6\u4f18\u5148\u8c03\u7528valueOf()&#xff0c;\u4f46Object.prototype.valueOf()\u8fd4\u56de\u5bf9\u8c61\u672c\u8eab\u5bfc\u81f4\u56de\u9000\u5230toString()<\/li>\n<li>\u5728\u90e8\u5206\u73af\u5883\u4e2d{}\u88ab\u89e3\u6790\u4e3a\u4ee3\u7801\u5757\u800c\u975e\u5bf9\u8c61&#xff0c;\u4f7f\u5f97&#043;[]\u53d8\u4e3a\u6570\u5b57\u8f6c\u6362<\/li>\n<\/ul>\n<hr \/>\n<h5>2. \u4f5c\u7528\u57df\u7684\u89c6\u89c9\u6b3a\u9a97<\/h5>\n<p>for (var i &#061; 0; i &lt; 3; i&#043;&#043;) {<br \/>\n  setTimeout(() &#061;&gt; console.log(i), 100)<br \/>\n}<br \/>\n\/\/ \u8f93\u51fa&#xff1a;3 3 3<\/p>\n<p>\u7ecf\u5178\u7684\u95ed\u5305\u9677\u9631\u6e90\u4e8e&#xff1a;<\/p>\n<ul>\n<li>var\u7684\u53d8\u91cf\u63d0\u5347\u4f7fi\u6210\u4e3a\u5168\u5c40\u4f5c\u7528\u57df\u53d8\u91cf<\/li>\n<li>\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\u5bfc\u81f4\u56de\u8c03\u6267\u884c\u65f6\u5faa\u73af\u5df2\u7ed3\u675f<\/li>\n<li>\u89e3\u51b3\u65b9\u6848\u9700\u901a\u8fc7let\u5757\u7ea7\u4f5c\u7528\u57df\u6216\u7acb\u5373\u6267\u884c\u51fd\u6570\u521b\u5efa\u65b0\u4f5c\u7528\u57df<\/li>\n<\/ul>\n<hr \/>\n<h5>3. \u539f\u578b\u94fe\u7684\u8ba4\u77e5\u8ff7\u96fe<\/h5>\n<p>function Person() {}<br \/>\nlet p &#061; new Person()<br \/>\nconsole.log(p.constructor &#061;&#061;&#061; Person) \/\/ true<br \/>\nPerson.prototype &#061; {}<br \/>\nconsole.log(p.constructor &#061;&#061;&#061; Person) \/\/ false <\/p>\n<p>http:\/\/my.tv.sohu.com\/us\/442338044\/699363254.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzI1NC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363091.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzA5MS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363264.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzI2NC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363100.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzEwMC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363412.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQxMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363189.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzE4OS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363290.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzI5MC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363424.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQyNC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363427.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQyNy5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363433.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQzMy5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363602.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzYwMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363385.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzM4NS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363443.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQ0My5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363390.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzM5MC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363516.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzUxNi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363522.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzUyMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363527.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzUyNy5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363537.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzUzNy5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363544.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU0NC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363546.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU0Ni5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363736.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzczNi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363483.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQ4My5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363646.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzY0Ni5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363561.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU2MS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363652.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzY1Mi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363492.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQ5Mi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363759.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzc1OS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363499.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzQ5OS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363576.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU3Ni5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363812.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzgxMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363589.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU4OS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363689.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzY4OS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363780.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzc4MC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363781.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzc4MS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363598.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzU5OC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363832.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzgzMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364002.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDAwMi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364010.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDAxMC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364011.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDAxMS5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364017.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDAxNy5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363800.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzgwMC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364104.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDEwNC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363852.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzg1Mi5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363924.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzkyNC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363858.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzg1OC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363934.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2MzkzNC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363940.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzk0MC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363953.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzk1My5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699363964.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2Mzk2NC5zaHRtbA&#061;&#061;.html<br \/>\nhttp:\/\/my.tv.sohu.com\/us\/442338044\/699364068.shtml<br \/>\nhttps:\/\/tv.sohu.com\/v\/dXMvNDQyMzM4MDQ0LzY5OTM2NDA2OC5zaHRtbA&#061;&#061;.html<br \/>\n\u00a0<\/p>\n<p>\u6b64\u73b0\u8c61\u63ed\u793a&#xff1a;<\/p>\n<ul>\n<li>constructor\u5c5e\u6027\u5b9e\u9645\u6307\u5411\u539f\u578b\u5bf9\u8c61\u800c\u975e\u6784\u9020\u51fd\u6570<\/li>\n<li>\u91cd\u5199\u539f\u578b\u4f1a\u5207\u65ad\u73b0\u6709\u5b9e\u4f8b\u4e0e\u539f\u578b\u7684\u94fe\u63a5<\/li>\n<li>\u539f\u578b\u94fe\u662f\u52a8\u6001\u5f15\u7528\u800c\u975e\u9759\u6001\u62f7\u8d1d<\/li>\n<\/ul>\n<hr \/>\n<h5>\u7834\u5c40\u4e4b\u9053&#xff1a;<\/h5>\n<li>\u4e25\u683c\u6a21\u5f0f\u542f\u7528&#034;use strict&#034;\u6d88\u9664\u9690\u5f0f\u8f6c\u6362<\/li>\n<li>\u91c7\u7528TypeScript\u5f15\u5165\u9759\u6001\u7c7b\u578b\u7cfb\u7edf<\/li>\n<li>\u4f7f\u7528ESLint\u89c4\u5219\u96c6\u7ea6\u675f\u5371\u9669\u64cd\u4f5c<\/li>\n<li>\u638c\u63e1let\/const\u66ff\u4ee3var\u7684\u4f5c\u7528\u57df\u63a7\u5236<\/li>\n<p>JavaScript\u7684\u201c\u8bed\u76f2\u201d\u672c\u8d28\u4e0a\u662f\u8bed\u8a00\u8bbe\u8ba1\u54f2\u5b66\u4e0e\u5de5\u7a0b\u5b9e\u8df5\u7684\u78b0\u649e\u3002\u552f\u6709\u6df1\u5165\u7406\u89e3\u5176\u6267\u884c\u4e0a\u4e0b\u6587\u3001\u4e8b\u4ef6\u5faa\u73af\u548c\u539f\u578b\u673a\u5236\u4e09\u5927\u6838\u5fc3&#xff0c;\u65b9\u80fd\u771f\u6b63\u7834\u9664\u8ba4\u77e5\u8ff7\u96fe&#xff0c;\u5b9e\u73b0\u4ece\u201c\u80fd\u5199\u4ee3\u7801\u201d\u5230\u201c\u61c2\u5199\u4ee3\u7801\u201d\u7684\u672c\u8d28\u8de8\u8d8a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript&#xff1a;\u7f16\u7a0b\u4e16\u754c\u4e2d\u7684\u201c\u8bed\u76f2\u201d\u73b0\u8c61JavaScript\u4f5c\u4e3a\u4e00\u95e8\u52a8\u6001\u5f31\u7c7b\u578b\u8bed\u8a00&#xff0c;\u5176\u7075\u6d3b\u6027\u80cc\u540e\u6f5c\u85cf\u7740\u8bf8\u591a\u8ba4\u77e5\u9677\u9631&#xff0c;\u5e38\u4f7f\u5f00\u53d1\u8005\u9677\u5165\u201c\u8bed\u76f2\u201d\u72b6\u6001\u2014\u2014\u770b\u4f3c\u80fd\u8bfb\u5199\u4ee3\u7801&#xff0c;\u5b9e\u5219\u5bf9\u5e95\u5c42\u673a\u5236\u4e00\u77e5\u534a\u89e3\u3002\u4ee5\u4e0b\u4e09\u4e2a\u5178\u578b\u573a\u666f\u63ed\u793a\u4e86\u8fd9\u79cd\u8ba4\u77e5\u76f2\u533a&#xff1a;1. \u7c7b\u578b\u8f6c\u6362\u7684\u9b54\u672f\u9677\u9631console.log([]  []) \/\/ \\&#8221;\\&#8221;<br \/>\nconsole.log([]  {}) \/\/ \\&#8221;[object Object]\\&#8221;<br \/>\nconsole.log<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99],"topic":[],"class_list":["post-73669","post","type-post","status-publish","format-standard","hentry","category-server","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/73669.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"JavaScript&#xff1a;\u7f16\u7a0b\u4e16\u754c\u4e2d\u7684\u201c\u8bed\u76f2\u201d\u73b0\u8c61JavaScript\u4f5c\u4e3a\u4e00\u95e8\u52a8\u6001\u5f31\u7c7b\u578b\u8bed\u8a00&#xff0c;\u5176\u7075\u6d3b\u6027\u80cc\u540e\u6f5c\u85cf\u7740\u8bf8\u591a\u8ba4\u77e5\u9677\u9631&#xff0c;\u5e38\u4f7f\u5f00\u53d1\u8005\u9677\u5165\u201c\u8bed\u76f2\u201d\u72b6\u6001\u2014\u2014\u770b\u4f3c\u80fd\u8bfb\u5199\u4ee3\u7801&#xff0c;\u5b9e\u5219\u5bf9\u5e95\u5c42\u673a\u5236\u4e00\u77e5\u534a\u89e3\u3002\u4ee5\u4e0b\u4e09\u4e2a\u5178\u578b\u573a\u666f\u63ed\u793a\u4e86\u8fd9\u79cd\u8ba4\u77e5\u76f2\u533a&#xff1a;1. \u7c7b\u578b\u8f6c\u6362\u7684\u9b54\u672f\u9677\u9631console.log([] []) \/\/ &quot;&quot; console.log([] {}) \/\/ &quot;[object Object]&quot; console.log\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/73669.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-07T23:09:30+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73669.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/73669.html\",\"name\":\"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-02-07T23:09:30+00:00\",\"dateModified\":\"2026-02-07T23:09:30+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/73669.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/73669.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73669.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/73669.html","og_locale":"zh_CN","og_type":"article","og_title":"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"JavaScript&#xff1a;\u7f16\u7a0b\u4e16\u754c\u4e2d\u7684\u201c\u8bed\u76f2\u201d\u73b0\u8c61JavaScript\u4f5c\u4e3a\u4e00\u95e8\u52a8\u6001\u5f31\u7c7b\u578b\u8bed\u8a00&#xff0c;\u5176\u7075\u6d3b\u6027\u80cc\u540e\u6f5c\u85cf\u7740\u8bf8\u591a\u8ba4\u77e5\u9677\u9631&#xff0c;\u5e38\u4f7f\u5f00\u53d1\u8005\u9677\u5165\u201c\u8bed\u76f2\u201d\u72b6\u6001\u2014\u2014\u770b\u4f3c\u80fd\u8bfb\u5199\u4ee3\u7801&#xff0c;\u5b9e\u5219\u5bf9\u5e95\u5c42\u673a\u5236\u4e00\u77e5\u534a\u89e3\u3002\u4ee5\u4e0b\u4e09\u4e2a\u5178\u578b\u573a\u666f\u63ed\u793a\u4e86\u8fd9\u79cd\u8ba4\u77e5\u76f2\u533a&#xff1a;1. \u7c7b\u578b\u8f6c\u6362\u7684\u9b54\u672f\u9677\u9631console.log([] []) \/\/ \"\" console.log([] {}) \/\/ \"[object Object]\" console.log","og_url":"https:\/\/www.wsisp.com\/helps\/73669.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-02-07T23:09:30+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"5 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/73669.html","url":"https:\/\/www.wsisp.com\/helps\/73669.html","name":"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-02-07T23:09:30+00:00","dateModified":"2026-02-07T23:09:30+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/73669.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/73669.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/73669.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"JavaScript\u8bed\u76f2\uff1a\u5f53\u4ee3\u7801\u4f1a\u5199\u5374\u4e0d\u61c2"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73669","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=73669"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73669\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=73669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=73669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=73669"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=73669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}