{"id":3441,"date":"2024-11-10T08:10:25","date_gmt":"2024-11-10T00:10:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3441\/"},"modified":"2024-11-10T08:10:25","modified_gmt":"2024-11-10T00:10:25","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8js%e4%b8%ad%e5%bc%95%e7%94%a8js","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3441\/","title":{"rendered":"\u5982\u4f55\u5728js\u4e2d\u5f15\u7528js"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u5f15\u7528 javascript \u6587\u4ef6\uff1a\u4f7f\u7528 \u6807\u7b7e\uff0c\u6307\u5b9a javascript \u6587\u4ef6\u6e90\u8def\u5f84\u4f7f\u7528 defer \u6216 async \u5c5e\u6027\u6307\u5b9a\u52a0\u8f7d\u65b9\u5f0f\u4f7f\u7528 javascript \u6a21\u5757\uff0c\u6309\u6a21\u5757\u7ec4\u7ec7\u548c\u5f15\u7528\u6587\u4ef6\u4f7f\u7528 amd \u89c4\u8303\uff0c\u5b9a\u4e49\u548c\u52a0\u8f7d\u5f02\u6b65\u6a21\u5757\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110812215946958.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u5728js\u4e2d\u5f15\u7528js\u63d2\u56fe\" alt=\"\u5982\u4f55\u5728js\u4e2d\u5f15\u7528js\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 JavaScript \u4e2d\u5f15\u7528 JavaScript<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\u5f15\u7528\u5176\u4ed6 JavaScript \u6587\u4ef6\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u505a\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5c06\u4ee3\u7801\u5206\u5757\u5e76\u63d0\u9ad8\u53ef\u7ef4\u62a4\u6027\u3002\u4ee5\u4e0b\u662f\u5f15\u7528 JavaScript \u6587\u4ef6\u7684\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 &lt;script&gt; \u6807\u7b7e&lt;\/script&gt;<\/strong><\/p>\n<p>\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 &lt;script&gt; \u6807\u7b7e\uff0c\u5e76\u6307\u5b9a JavaScript \u6587\u4ef6\u7684\u6e90\u8def\u5f84\uff1a&lt;\/script&gt;<\/p>\n<pre>&lt;script src=\"script.js\"&gt;&lt;\/script&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>2. \u4f7f\u7528 defer \u6216 async \u5c5e\u6027<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 defer \u6216 async \u5c5e\u6027\u6765\u6307\u5b9a JavaScript \u6587\u4ef6\u7684\u52a0\u8f7d\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>defer\uff1a\u6d4f\u89c8\u5668\u5c06\u5728\u89e3\u6790\u5b8c HTML \u6587\u6863\u540e\u52a0\u8f7d JavaScript \u6587\u4ef6\uff0c\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u6e32\u67d3\u3002<\/li>\n<li>async\uff1a\u6d4f\u89c8\u5668\u5c06\u7acb\u5373\u52a0\u8f7d JavaScript \u6587\u4ef6\uff0c\u4e0e\u9875\u9762\u6e32\u67d3\u5e76\u884c\u3002<\/li>\n<\/ul>\n<pre>&lt;script src=\"script.js\" defer&gt;&lt;\/script&gt;\n&lt;script src=\"script.js\" async&gt;&lt;\/script&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>3. \u4f7f\u7528 JavaScript \u6a21\u5757<\/strong><\/p>\n<p>ES6 \u5f15\u5165\u4e86 JavaScript \u6a21\u5757\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u6309\u6a21\u5757\u7ec4\u7ec7\u548c\u5f15\u7528 JavaScript \u6587\u4ef6\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u6a21\u5757\u6587\u4ef6\uff0c\u4f8b\u5982 module.js\uff0c\u5e76\u5c06\u5176\u5185\u5bb9\u5bfc\u51fa\uff1a<\/li>\n<\/ul>\n<pre>export function greet() {\n  console.log('Hello, world!');\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ul>\n<li>\u5728\u8981\u5f15\u7528\u6a21\u5757\u7684\u811a\u672c\u4e2d\uff0c\u4f7f\u7528 import \u8bed\u53e5\u5bfc\u5165\u6a21\u5757\uff1a<\/li>\n<\/ul>\n<pre>import { greet } from '.\/module.js';\n\ngreet();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>4. \u4f7f\u7528 AMD (Asynchronous Module Definition)<\/strong><\/p>\n<p>AMD \u662f\u4e00\u79cd\u7528\u4e8e\u5b9a\u4e49\u548c\u52a0\u8f7d\u5f02\u6b65\u6a21\u5757\u7684\u89c4\u8303\u3002\u5b83\u901a\u5e38\u4e0e RequireJS \u5e93\u4e00\u8d77\u4f7f\u7528\uff1a<\/p>\n<ul>\n<li>\u5b9a\u4e49\u4e00\u4e2a\u6a21\u5757\uff0c\u4f8b\u5982 requirejs-config.js\uff0c\u5e76\u5c06\u5176\u4f5c\u4e3a\u6570\u636e\u6a21\u5757\u52a0\u8f7d\uff1a<\/li>\n<\/ul>\n<pre>require.config({\n  paths: {\n    greet: '.\/greet'\n  }\n});<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ul>\n<li>\u5728\u8981\u5f15\u7528\u6a21\u5757\u7684\u811a\u672c\u4e2d\uff0c\u4f7f\u7528 require \u8bed\u53e5\u52a0\u8f7d\u6a21\u5757\uff1a<\/li>\n<\/ul>\n<pre>require(['greet'], function(greet) {\n  greet();\n});<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5728js\u4e2d\u5f15\u7528js\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>\u5982\u4f55\u5f15\u7528 javascript \u6587\u4ef6\uff1a\u4f7f\u7528 \u6807\u7b7e\uff0c\u6307\u5b9a javascript \u6587\u4ef6\u6e90\u8def\u5f84\u4f7f\u7528 defer \u6216 async \u5c5e\u6027\u6307\u5b9a\u52a0\u8f7d\u65b9\u5f0f\u4f7f\u7528 javascript \u6a21\u5757\uff0c\u6309\u6a21\u5757\u7ec4\u7ec7\u548c\u5f15\u7528\u6587\u4ef6\u4f7f\u7528 amd \u89c4\u8303\uff0c\u5b9a\u4e49\u548c\u52a0\u8f7d\u5f02\u6b65\u6a21\u5757 \u5982\u4f55\u5728 JavaScript \u4e2d\u5f15\u7528 JavaScript \u5728 JavaScript \u4e2d\u5f15\u7528\u5176\u4ed6 JavaScript \u6587\u4ef6\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u505a\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5c06\u4ee3\u7801\u5206\u5757\u5e76\u63d0\u9ad8\u53ef\u7ef4\u62a4\u6027\u3002\u4ee5\u4e0b\u662f\u5f15\u7528 JavaScript \u6587\u4ef6\u7684\u51e0\u79cd\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 &lt;script&gt; \u6807\u7b7e&lt;\/script&gt; \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 &lt;script&gt; \u6807\u7b7e\uff0c\u5e76\u6307\u5b9a JavaScript \u6587\u4ef6\u7684\u6e90\u8def\u5f84\uff1a&lt;\/script&gt; &lt;script src=&#8221;script.js&#8221;&gt;&lt;\/script&gt; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 defer \u6216 async \u5c5e\u6027 \u53ef\u4ee5\u4f7f\u7528 defer \u6216 async \u5c5e\u6027\u6765\u6307\u5b9a JavaScript \u6587\u4ef6\u7684\u52a0\u8f7d\u65b9\u5f0f\uff1a defer\uff1a\u6d4f\u89c8\u5668\u5c06\u5728\u89e3\u6790\u5b8c HTML \u6587\u6863\u540e\u52a0\u8f7d JavaScript \u6587\u4ef6\uff0c\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u6e32\u67d3\u3002 [&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-3441","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3441","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=3441"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3441\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}