{"id":10105,"date":"2023-11-28T21:26:38","date_gmt":"2023-11-28T13:26:38","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10105"},"modified":"2023-11-30T19:08:11","modified_gmt":"2023-11-30T11:08:11","slug":"javascript-zhong-defer-he-async","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-defer-he-async\/","title":{"rendered":"JavaScript \u4e2d defer \u548c async\uff1f"},"content":{"rendered":"<p><code>defer<\/code> \u548c <code>async<\/code> \u90fd\u662f\u7528\u4e8e\u63a7\u5236\u811a\u672c\u52a0\u8f7d\u548c\u6267\u884c\u65f6\u673a\u7684 HTML \u5c5e\u6027\uff0c\u5b83\u4eec\u5bf9\u4e8e\u4f18\u5316\u9875\u9762\u52a0\u8f7d\u548c\u6e32\u67d3\u5177\u6709\u91cd\u8981\u4f5c\u7528\uff0c\u4f46\u5728\u6267\u884c\u987a\u5e8f\u548c\u52a0\u8f7d\u65b9\u5f0f\u4e0a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3><a id=\"defer%E5%B1%9E%E6%80%A7%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a><code>defer<\/code> \u5c5e\u6027\uff1a<\/h3>\n<ul>\n<li><code>defer<\/code> \u5c5e\u6027\u7528\u4e8e\u544a\u8bc9\u6d4f\u89c8\u5668\u7acb\u5373\u4e0b\u8f7d\u811a\u672c\u6587\u4ef6\uff0c\u4f46\u5ef6\u8fdf\u6267\u884c\u811a\u672c\uff0c\u76f4\u5230\u6587\u6863\u89e3\u6790\u5b8c\u6210\u540e\uff08<code>DOMContentLoaded<\/code> \u4e8b\u4ef6\u89e6\u53d1\u4e4b\u524d\uff09\u624d\u6267\u884c\u3002<\/li>\n<li>\u591a\u4e2a\u5e26\u6709 <code>defer<\/code> \u5c5e\u6027\u7684\u811a\u672c\u6309\u7167\u5b83\u4eec\u5728\u6587\u6863\u4e2d\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\u3002<\/li>\n<li>\u811a\u672c\u7684\u4e0b\u8f7d\u4e0d\u4f1a\u963b\u6b62 HTML \u89e3\u6790\u548c\u6e32\u67d3\u8fc7\u7a0b\u3002<\/li>\n<li>\u9002\u7528\u4e8e\u4e0d\u9700\u8981\u7acb\u5373\u6267\u884c\u4e14\u4e0d\u5f71\u54cd\u9875\u9762\u5185\u5bb9\u5c55\u793a\u7684\u811a\u672c\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-html\">&lt;script src=&quot;example.js&quot; defer&gt;&lt;\/script&gt;\n<\/code><\/pre>\n<h3><a id=\"async%E5%B1%9E%E6%80%A7%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a><code>async<\/code> \u5c5e\u6027\uff1a<\/h3>\n<ul>\n<li><code>async<\/code> \u5c5e\u6027\u7528\u4e8e\u5f02\u6b65\u52a0\u8f7d\u811a\u672c\uff0c\u4e0d\u5f71\u54cd\u9875\u9762\u7684\u89e3\u6790\u548c\u6e32\u67d3\uff0c\u5373\u4e0b\u8f7d\u811a\u672c\u65f6\u4e0d\u4f1a\u963b\u6b62\u9875\u9762\u7684\u52a0\u8f7d\u3002<\/li>\n<li>\u4e0b\u8f7d\u5b8c\u6210\u540e\u7acb\u5373\u6267\u884c\u811a\u672c\uff0c\u4f46\u662f\u6267\u884c\u65f6\u673a\u53ef\u80fd\u5728\u6587\u6863\u89e3\u6790\u5b8c\u6210\u4e4b\u524d\u6216\u4e4b\u540e\uff0c\u53d6\u51b3\u4e8e\u811a\u672c\u52a0\u8f7d\u5b8c\u6210\u7684\u65f6\u95f4\u3002<\/li>\n<li>\u9002\u7528\u4e8e\u4e0d\u4f9d\u8d56\u5176\u4ed6\u811a\u672c\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u7b49\u5f85\u9875\u9762\u89e3\u6790\u5b8c\u6210\u7684\u811a\u672c\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-html\">&lt;script src=&quot;example.js&quot; async&gt;&lt;\/script&gt;\n<\/code><\/pre>\n<h3><a id=\"%E5%8C%BA%E5%88%AB%E6%80%BB%E7%BB%93%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>\u533a\u522b\u603b\u7ed3\uff1a<\/h3>\n<ul>\n<li><code>defer<\/code> \u4fdd\u8bc1\u811a\u672c\u7684\u6267\u884c\u987a\u5e8f\u4e0e\u5b83\u4eec\u5728\u6587\u6863\u4e2d\u7684\u987a\u5e8f\u4e00\u81f4\uff0c\u800c <code>async<\/code> \u5219\u4e0d\u4fdd\u8bc1\u811a\u672c\u6267\u884c\u7684\u987a\u5e8f\u3002<\/li>\n<li><code>defer<\/code> \u811a\u672c\u4f1a\u5728\u6587\u6863\u89e3\u6790\u5b8c\u6210\u540e\u6267\u884c\uff0c\u800c <code>async<\/code> \u811a\u672c\u53ef\u80fd\u5728\u6587\u6863\u89e3\u6790\u5b8c\u6210\u4e4b\u524d\u6216\u4e4b\u540e\u6267\u884c\u3002<\/li>\n<li>\u4f7f\u7528 <code>defer<\/code> \u548c <code>async<\/code> \u53ef\u4ee5\u4f18\u5316\u9875\u9762\u52a0\u8f7d\u6027\u80fd\uff0c\u4f46\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u811a\u672c\u9700\u6c42\u548c\u9875\u9762\u6548\u679c\u6765\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>defer \u548c async \u90fd\u662f\u7528\u4e8e\u63a7\u5236\u811a\u672c\u52a0\u8f7d\u548c\u6267\u884c\u65f6\u673a\u7684 HTML \u5c5e\u6027\uff0c\u5b83\u4eec\u5bf9\u4e8e\u4f18\u5316\u9875\u9762\u52a0\u8f7d\u548c\u6e32\u67d3\u5177\u6709\u91cd [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-10105","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10105"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10105\/revisions"}],"predecessor-version":[{"id":13673,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10105\/revisions\/13673"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10105"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}