{"id":3432,"date":"2024-11-10T08:54:52","date_gmt":"2024-11-10T00:54:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3432\/"},"modified":"2024-11-10T08:54:52","modified_gmt":"2024-11-10T00:54:52","slug":"js%e5%a6%82%e4%bd%95%e5%bb%b6%e8%bf%9fjs%e7%9a%84%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3432\/","title":{"rendered":"js\u5982\u4f55\u5ef6\u8fdfjs\u7684\u6267\u884c"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 settimeout() \u65b9\u6cd5\u3001\u8bbe\u7f6e defer \u5c5e\u6027\u6216 async \u5c5e\u6027\u6765\u5ef6\u8fdf javascript \u6267\u884c\u3002\u9009\u62e9\u65b9\u6cd5\u65f6\u9700\u8003\u8651\u6267\u884c\u987a\u5e8f\u3001\u517c\u5bb9\u6027\u3001\u6027\u80fd\u548c\u5ef6\u8fdf\u76ee\u7684\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110812093042600.jpg\" class=\"aligncenter\" title=\"js\u5982\u4f55\u5ef6\u8fdfjs\u7684\u6267\u884c\u63d2\u56fe\" alt=\"js\u5982\u4f55\u5ef6\u8fdfjs\u7684\u6267\u884c\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5ef6\u8fdf JavaScript \u6267\u884c<\/strong><\/p>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5ef6\u8fdf JavaScript \u4ee3\u7801\u7684\u6267\u884c\u53ef\u4ee5\u63d0\u9ad8\u9875\u9762\u52a0\u8f7d\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u79cd\u5ef6\u8fdf\uff1a<\/p>\n<p><strong>1. setTimeout() \u65b9\u6cd5<\/strong><\/p>\n<p>setTimeout() \u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u548c\u4e00\u4e2a\u5ef6\u8fdf\u65f6\u95f4\uff08\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff09\u4f5c\u4e3a\u53c2\u6570\uff0c\u5141\u8bb8\u5728\u6307\u5b9a\u7684\u5ef6\u8fdf\u540e\u6267\u884c\u4ee3\u7801\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>\/\/ \u5ef6\u8fdf 1000 \u6beb\u79d2\u540e\u6267\u884c\nsetTimeout(() =&gt; {\n  \/\/ \u5ef6\u8fdf\u6267\u884c\u7684\u4ee3\u7801\n}, 1000);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>2. defer \u5c5e\u6027<\/strong><\/p>\n<p>\u5bf9\u4e8e\u811a\u672c\u6807\u7b7e\uff0cdefer \u5c5e\u6027\u6307\u793a\u6d4f\u89c8\u5668\u5728\u52a0\u8f7d HTML \u6587\u6863\u65f6\u5ef6\u8fdf\u6267\u884c\u811a\u672c\u3002\u6d4f\u89c8\u5668\u4f1a\u5728 HTML \u89e3\u6790\u5b8c\u6210\u540e\u6267\u884c\u8fd9\u4e9b\u811a\u672c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>&lt;script defer src=\"script.js\"&gt;&lt;\/script&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>3. async \u5c5e\u6027<\/strong><\/p>\n<p>async \u5c5e\u6027\u7c7b\u4f3c\u4e8e defer\uff0c\u4f46\u5141\u8bb8\u811a\u672c\u5728 HTML \u89e3\u6790\u7684\u540c\u65f6\u6267\u884c\u3002\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u5e76\u884c\u6027\u548c\u52a0\u8f7d\u901f\u5ea6\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u811a\u672c\u6267\u884c\u987a\u5e8f\u4e0d\u786e\u5b9a\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>&lt;script async src=\"script.js\"&gt;&lt;\/script&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u9009\u62e9\u65b9\u6cd5\u7684\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<p>\u9009\u62e9\u5ef6\u8fdf\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u8003\u8651\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li> <strong>\u6267\u884c\u987a\u5e8f\uff1a<\/strong> setTimeout() \u4fdd\u8bc1\u4ee3\u7801\u5c06\u5728\u6307\u5b9a\u7684\u5ef6\u8fdf\u540e\u6267\u884c\uff0c\u800c defer \u548c async \u5141\u8bb8\u5e76\u884c\u6267\u884c\u3002<\/li>\n<li> <strong>\u517c\u5bb9\u6027\uff1a<\/strong> defer \u548c async \u5c5e\u6027\u4ec5\u9002\u7528\u4e8e\u5916\u90e8\u811a\u672c\uff0c\u4e0d\u9002\u7528\u4e8e\u5185\u8054\u811a\u672c\u3002<\/li>\n<li> <strong>\u6027\u80fd\uff1a<\/strong> async \u53ef\u63d0\u4f9b\u6700\u4f73\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u811a\u672c\u6267\u884c\u987a\u5e8f\u4e0d\u786e\u5b9a\u3002<\/li>\n<li> <strong>\u76ee\u7684\uff1a<\/strong> \u5ef6\u8fdf\u6267\u884c\u901a\u5e38\u7528\u4e8e\u63a8\u8fdf\u975e\u5173\u952e\u4efb\u52a1\uff0c\u4f8b\u5982\u5206\u6790\u6216\u5e7f\u544a\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u5ef6\u8fdfjs\u7684\u6267\u884c\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>\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 settimeout() \u65b9\u6cd5\u3001\u8bbe\u7f6e defer \u5c5e\u6027\u6216 async \u5c5e\u6027\u6765\u5ef6\u8fdf javascript \u6267\u884c\u3002\u9009\u62e9\u65b9\u6cd5\u65f6\u9700\u8003\u8651\u6267\u884c\u987a\u5e8f\u3001\u517c\u5bb9\u6027\u3001\u6027\u80fd\u548c\u5ef6\u8fdf\u76ee\u7684\u3002 \u5982\u4f55\u5ef6\u8fdf JavaScript \u6267\u884c \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5ef6\u8fdf JavaScript \u4ee3\u7801\u7684\u6267\u884c\u53ef\u4ee5\u63d0\u9ad8\u9875\u9762\u52a0\u8f7d\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u3002\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u79cd\u5ef6\u8fdf\uff1a 1. setTimeout() \u65b9\u6cd5 setTimeout() \u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u548c\u4e00\u4e2a\u5ef6\u8fdf\u65f6\u95f4\uff08\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\uff09\u4f5c\u4e3a\u53c2\u6570\uff0c\u5141\u8bb8\u5728\u6307\u5b9a\u7684\u5ef6\u8fdf\u540e\u6267\u884c\u4ee3\u7801\u3002\u4f8b\u5982\uff1a \/\/ \u5ef6\u8fdf 1000 \u6beb\u79d2\u540e\u6267\u884c setTimeout(() =&gt; { \/\/ \u5ef6\u8fdf\u6267\u884c\u7684\u4ee3\u7801 }, 1000); \u767b\u5f55\u540e\u590d\u5236 2. defer \u5c5e\u6027 \u5bf9\u4e8e\u811a\u672c\u6807\u7b7e\uff0cdefer \u5c5e\u6027\u6307\u793a\u6d4f\u89c8\u5668\u5728\u52a0\u8f7d HTML \u6587\u6863\u65f6\u5ef6\u8fdf\u6267\u884c\u811a\u672c\u3002\u6d4f\u89c8\u5668\u4f1a\u5728 HTML \u89e3\u6790\u5b8c\u6210\u540e\u6267\u884c\u8fd9\u4e9b\u811a\u672c\u3002\u4f8b\u5982\uff1a &lt;script defer src=&#8221;script.js&#8221;&gt;&lt;\/script&gt; \u767b\u5f55\u540e\u590d\u5236 3. async \u5c5e\u6027 async \u5c5e\u6027\u7c7b\u4f3c\u4e8e defer\uff0c\u4f46\u5141\u8bb8\u811a\u672c\u5728 HTML \u89e3\u6790\u7684\u540c\u65f6\u6267\u884c\u3002\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u5e76\u884c\u6027\u548c\u52a0\u8f7d\u901f\u5ea6\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u811a\u672c\u6267\u884c\u987a\u5e8f\u4e0d\u786e\u5b9a\u3002\u4f8b\u5982\uff1a &lt;script async [&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-3432","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3432","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=3432"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3432\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}