{"id":3422,"date":"2024-11-10T10:37:59","date_gmt":"2024-11-10T02:37:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3422\/"},"modified":"2024-11-10T10:37:59","modified_gmt":"2024-11-10T02:37:59","slug":"js%e4%b8%ad%e5%a4%96%e9%83%a8js%e5%a6%82%e4%bd%95%e5%bc%95%e5%85%a5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3422\/","title":{"rendered":"js\u4e2d\u5916\u90e8js\u5982\u4f55\u5f15\u5165"},"content":{"rendered":"<blockquote><p>\n  javascript \u4e2d\u5f15\u5165\u5916\u90e8 js \u6587\u4ef6\u6709\u516d\u79cd\u65b9\u5f0f\uff1ascript \u6807\u7b7e\u3001defer \u5c5e\u6027\u3001async \u5c5e\u6027\u3001import() \u51fd\u6570\u3001\u6a21\u5757\u5b9a\u4e49\u548c amd \u6a21\u5757\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u53d6\u51b3\u4e8e\u9700\u6c42\u548c\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110812011294737.jpg\" class=\"aligncenter\" title=\"js\u4e2d\u5916\u90e8js\u5982\u4f55\u5f15\u5165\u63d2\u56fe\" alt=\"js\u4e2d\u5916\u90e8js\u5982\u4f55\u5f15\u5165\u63d2\u56fe\" \/><\/p>\n<h2>JS \u5916\u90e8 JS \u5f15\u5165\u65b9\u5f0f<\/h2>\n<p>\u5728 JavaScript \u4e2d\uff0c\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a<\/p>\n<p><strong>1. script \u6807\u7b7e<\/strong><\/p>\n<p>\u8fd9\u662f\u6700\u7b80\u5355\u7684\u5f15\u5165\u65b9\u5f0f\uff0c\u53ea\u9700\u5728 HTML \u6587\u4ef6\u4e2d\u6dfb\u52a0 &lt;script&gt; \u6807\u7b7e\uff0c\u5e76\u6307\u5b9a\u5916\u90e8 JS \u6587\u4ef6\u7684\u8def\u5f84\uff1a&lt;\/script&gt;<\/p>\n<pre>&lt;script src=\"external.js\"&gt;&lt;\/script&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. defer \u5c5e\u6027<\/strong><\/p>\n<p>\u5982\u679c\u9700\u8981\u5ef6\u8fdf\u6267\u884c\u5916\u90e8 JS \u6587\u4ef6\uff0c\u53ef\u4ee5\u6dfb\u52a0 defer \u5c5e\u6027\uff1a<\/p>\n<pre>&lt;script defer src=\"external.js\"&gt;&lt;\/script&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u6837\uff0c\u5916\u90e8 JS \u6587\u4ef6\u5c06\u5728\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u540e\u624d\u6267\u884c\u3002<\/p>\n<p><strong>3. async \u5c5e\u6027<\/strong><\/p>\n<p>async \u5c5e\u6027\u53ef\u4ee5\u5916\u90e8 JS \u6587\u4ef6\uff0c\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u6e32\u67d3\uff1a<\/p>\n<pre>&lt;script async src=\"external.js\"&gt;&lt;\/script&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. import()<\/strong><\/p>\n<p>ES6 \u4e2d\u5f15\u5165\u4e86 import() \u51fd\u6570\uff0c\u7528\u4e8e\u52a8\u6001\u52a0\u8f7d\u5916\u90e8 JS \u6a21\u5757\uff1a<\/p>\n<pre>import('external.js')\n  .then((module) =&gt; {\n    \/\/ \u4f7f\u7528\u6a21\u5757\n  })\n  .catch((error) =&gt; {\n    \/\/ \u5904\u7406\u9519\u8bef\n  });<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u6a21\u5757\u5b9a\u4e49<\/strong><\/p>\n<p>\u5bf9\u4e8e\u73b0\u4ee3\u6d4f\u89c8\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528 ES6 \u6a21\u5757\u5b9a\u4e49\u6765\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\uff1a<\/p>\n<pre>&lt;script type=\"module\" src=\"external.js\"&gt;&lt;\/script&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. AMD \u6a21\u5757<\/strong><\/p>\n<p>AMD\uff08Asynchronous Module Definition\uff09\u89c4\u8303\u662f\u4e00\u79cd\u7528\u4e8e\u6309\u9700\u52a0\u8f7d\u6a21\u5757\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre>require(['external'], function(external) {\n  \/\/ \u4f7f\u7528\u6a21\u5757\n});<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9009\u62e9\u5408\u9002\u7684\u5f15\u5165\u65b9\u5f0f\u53d6\u51b3\u4e8e\u7279\u5b9a\u9700\u6c42\u548c\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002\u5bf9\u4e8e\u8f83\u65b0\u7684\u6d4f\u89c8\u5668\uff0c\u63a8\u8350\u4f7f\u7528 async \u5c5e\u6027\u6216\u6a21\u5757\u5b9a\u4e49\u7684\u65b9\u5f0f\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u4e2d\u5916\u90e8js\u5982\u4f55\u5f15\u5165\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>javascript \u4e2d\u5f15\u5165\u5916\u90e8 js \u6587\u4ef6\u6709\u516d\u79cd\u65b9\u5f0f\uff1ascript \u6807\u7b7e\u3001defer \u5c5e\u6027\u3001async \u5c5e\u6027\u3001import() \u51fd\u6570\u3001\u6a21\u5757\u5b9a\u4e49\u548c amd \u6a21\u5757\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u53d6\u51b3\u4e8e\u9700\u6c42\u548c\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002 JS \u5916\u90e8 JS \u5f15\u5165\u65b9\u5f0f \u5728 JavaScript \u4e2d\uff0c\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a 1. script \u6807\u7b7e \u8fd9\u662f\u6700\u7b80\u5355\u7684\u5f15\u5165\u65b9\u5f0f\uff0c\u53ea\u9700\u5728 HTML \u6587\u4ef6\u4e2d\u6dfb\u52a0 &lt;script&gt; \u6807\u7b7e\uff0c\u5e76\u6307\u5b9a\u5916\u90e8 JS \u6587\u4ef6\u7684\u8def\u5f84\uff1a&lt;\/script&gt; &lt;script src=&#8221;external.js&#8221;&gt;&lt;\/script&gt; \u767b\u5f55\u540e\u590d\u5236 2. defer \u5c5e\u6027 \u5982\u679c\u9700\u8981\u5ef6\u8fdf\u6267\u884c\u5916\u90e8 JS \u6587\u4ef6\uff0c\u53ef\u4ee5\u6dfb\u52a0 defer \u5c5e\u6027\uff1a &lt;script defer src=&#8221;external.js&#8221;&gt;&lt;\/script&gt; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u6837\uff0c\u5916\u90e8 JS \u6587\u4ef6\u5c06\u5728\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u540e\u624d\u6267\u884c\u3002 3. async \u5c5e\u6027 async \u5c5e\u6027\u53ef\u4ee5\u5916\u90e8 JS \u6587\u4ef6\uff0c\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u6e32\u67d3\uff1a &lt;script [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3422","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3422","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3422"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3422\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}