{"id":11568,"date":"2025-03-27T21:32:23","date_gmt":"2025-03-27T13:32:23","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=11568"},"modified":"2025-03-27T21:32:23","modified_gmt":"2025-03-27T13:32:23","slug":"html-script-blocking","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2025\/03\/html-script-blocking\/","title":{"rendered":"\u5149\u901f\u4e86\u89e3script style link\u5143\u7d20\u65b0\u589e\u7684blocking\u5c5e\u6027"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=11568\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=11568<\/a><br \/>\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u72ec\u7acb\u57df\u540d\u4e2a\u4eba\u7f51\u7ad9\u65e0\u9700\u6388\u6743\uff0c\u4f46\u9700\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u3001\u51fa\u5904\u4ee5\u53ca\u6587\u4e2d\u94fe\u63a5\uff0c\u4efb\u4f55\u7f51\u7ad9\u5747\u53ef\u6458\u8981\u805a\u5408\uff0c\u5546\u7528\u8bf7\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/201901-css-var.jpg';<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202503\/blocking-cover.jpg\" width=\"320\" height=\"200\" alt=\"HTML blocking\u5c5e\u6027\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<h3>\u4e00\u3001\u524d\u8a00<\/h3>\n<p>\u7ee7\u7eed\u4ecb\u7ecdWeb\u524d\u7aef\u524d\u8a00\u65b0\u7279\u6027\uff0c\u8fd9\u6b21\u8981\u4ecb\u7ecd\u7684\u662f\u4e00\u4e2aHTML\u5c5e\u6027\uff0c\u540d\u4e3a<code>blocking<\/code> \u5c5e\u6027\u5b83\u4e3b\u8981\u7528\u4e8e\u63a7\u5236\u8d44\u6e90\u52a0\u8f7d\u65f6\u5bf9\u6e32\u67d3\u7684\u963b\u585e\u884c\u4e3a\u3002<\/p>\n<p><code>blocking<\/code> \u5c5e\u6027\u5141\u8bb8\u5f00\u53d1\u8005\u5bf9\u8d44\u6e90\u52a0\u8f7d\u7684\u4f18\u5148\u7ea7\u548c\u65f6\u673a\u8fdb\u884c\u7cbe\u7ec6\u63a7\u5236\uff0c\u4ece\u800c\u5f71\u54cd\u9875\u9762\u7684\u6e32\u67d3\u6d41\u7a0b\u3002\u6d4f\u89c8\u5668\u5728\u89e3\u6790 HTML \u6587\u6863\u65f6\uff0c\u4f1a\u6839\u636e blocking \u5c5e\u6027\u7684\u503c\u6765\u51b3\u5b9a\u662f\u5426\u7b49\u5f85\u8d44\u6e90\u52a0\u8f7d\u5b8c\u6210\u540e\u518d\u7ee7\u7eed\u6e32\u67d3\u9875\u9762\uff0c\u8fd9\u5bf9\u4e8e\u4f18\u5316\u9875\u9762\u6027\u80fd\u548c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p><code>blocking<\/code> \u5c5e\u6027\u76ee\u524d\u652f\u6301\u7684HTML\u5143\u7d20\u5305\u62ec<code>&lt;script&gt;<\/code>\u5143\u7d20\u3001<code>&lt;style&gt;<\/code>\u5143\u7d20\u548c<code>&lt;link&gt;<\/code>\u5143\u7d20\u3002<\/p>\n<p>\u4f7f\u7528\u793a\u610f\uff1a<\/p>\n<pre>&lt;link rel=\"stylesheet\" href=\"styles.css\" blocking=\"render\"&gt;<\/pre>\n<pre>&lt;style blocking=\"render\"&gt;\r\n  p {\r\n    color: blue;\r\n  }\r\n&lt;\/style&gt;<\/pre>\n<pre>&lt;script src=\"script.js\" async blocking=\"render\"&gt;&lt;\/script&gt;<\/pre>\n<h3>\u4e8c\u3001\u5c5e\u6027\u503c\u548c\u542b\u4e49<\/h3>\n<p>\u76ee\u524d\u5173\u4e8e<code>blocking<\/code> \u5c5e\u6027\u7684\u8d44\u6599\u975e\u5e38\u5c11\uff0c\u6839\u636e\u6211\u4ece\u67d0\u4e2a\u4e0d\u592a\u6743\u5a01\u7684\u5730\u65b9\u770b\u5230\u7684\u8d44\u6599\uff0cblocking \u5c5e\u6027\u6709\u4ee5\u4e0b\u51e0\u4e2a\u53ef\u9009\u503c\uff1a<\/p>\n<dl>\n<dt><strong>render<\/strong><\/dt>\n<dd>\u5f53\u8d44\u6e90\u7684 blocking \u5c5e\u6027\u8bbe\u7f6e\u4e3a render \u65f6\uff0c\u8d44\u6e90\u7684\u52a0\u8f7d\u4f1a\u963b\u585e\u9875\u9762\u7684\u6e32\u67d3\u3002<\/dd>\n<dt><strong>load<\/strong><\/dt>\n<dd>\u5f53\u8bbe\u7f6e\u4e3a blocking=&#8221;load&#8221; \u65f6\uff0c\u8d44\u6e90\u7684\u52a0\u8f7d\u4f1a\u963b\u585e load \u4e8b\u4ef6\u7684\u89e6\u53d1\u3002load \u4e8b\u4ef6\u5728\u9875\u9762\u7684\u6240\u6709\u8d44\u6e90\uff08\u5305\u62ec\u56fe\u7247\u3001\u811a\u672c\u7b49\uff09\u52a0\u8f7d\u5b8c\u6210\u540e\u89e6\u53d1\u3002<\/dd>\n<dt><strong>none<\/strong><\/dt>\n<dd>\u8d44\u6e90\u7684\u52a0\u8f7d\u4e0d\u4f1a\u963b\u585e\u9875\u9762\u7684\u6e32\u67d3\u6216 load \u4e8b\u4ef6\u7684\u89e6\u53d1\u3002\u8fd9\u610f\u5473\u7740\u6d4f\u89c8\u5668\u4f1a\u5728\u540e\u53f0\u5f02\u6b65\u52a0\u8f7d\u8be5\u8d44\u6e90\uff0c\u800c\u4e0d\u4f1a\u7b49\u5f85\u5b83\u52a0\u8f7d\u5b8c\u6210\u5c31\u7ee7\u7eed\u6e32\u67d3\u9875\u9762\u3002\u8fd9\u79cd\u65b9\u5f0f\u9002\u7528\u4e8e\u90a3\u4e9b\u5bf9\u9875\u9762\u6e32\u67d3\u4e0d\u662f\u81f3\u5173\u91cd\u8981\u7684\u8d44\u6e90\uff0c\u5982\u4e00\u4e9b\u7edf\u8ba1\u811a\u672c\u6216\u975e\u5173\u952e\u7684\u56fe\u7247\u3002<\/dd>\n<\/dl>\n<p>\u4e0a\u9762\u7684\u5c5e\u6027\u503c\u89e3\u91ca\u4f3c\u4e4e\u5f88\u5408\u7406\u3002<\/p>\n<p>\u4f46\u662f\u6211\u67e5\u9605MDN\u6587\u6863\u8fd8\u6709\u89c4\u8303\uff0c\u4f3c\u4e4e\u76ee\u524d\u4ec5\u652f\u6301<code>render<\/code>\u5c5e\u6027\u503c\u3002<\/p>\n<p>\u8fd9\u8ba9\u6211\u5f88\u662f\u4e0d\u89e3\uff0c\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n<p>\u6bd4\u65b9\u8bf4<code>&lt;link&gt;<\/code>\u5143\u7d20\u5929\u7136\u963b\u6b62\u540e\u9762\u7684\u8d44\u6e90\u6e32\u67d3\uff0c\u8bbe\u7f6e<code>blocking=\"render\"<\/code>\u662f\u591a\u4f59\u7684\uff0c<code>&lt;style&gt;<\/code>\u5143\u7d20\u4e5f\u662f\u7c7b\u4f3c\u3002<\/p>\n<p>\u552f\u4e00\u6709\u70b9\u5e94\u7528\u573a\u666f\u7684\u5c31\u662f<code>&lt;script&gt;<\/code>\u5143\u7d20\u4e2d\u548c<code>async<\/code>\u8fd9\u4e2a\u5f02\u6b65\u5c5e\u6027\u540c\u65f6\u8bbe\u7f6e\u7684\u65f6\u5019\uff0c\u4e5f\u5c31\u662f\u8d44\u6e90\u8fd8\u662f\u5f02\u6b65\u52a0\u8f7d\uff0c\u4f46\u662f\u9875\u9762\u7684\u6e32\u67d3\u6267\u884c\u9700\u8981\u8fd9\u4e2aJS\u52a0\u8f7d\u5b8c\u6bd5\u3002<\/p>\n<p>\u54e6\uff0c\u4e0d\u5bf9\uff0c\u6211\u60f3\u4e86\u4e0b\uff0c\u5982\u679c<code>&lt;link&gt;<\/code>\u5143\u7d20\u5728\u9875\u9762\u7684\u672b\u5c3e\uff0c\u800c\u4e0d\u662f<code>&lt;head&gt;<\/code>\u4e2d\uff0c<code>blocking=\"render\"<\/code>\u8fd8\u662f\u6709\u4f5c\u7528\u7684\uff0c\u867d\u7136\u8fd9\u4e2a\u573a\u666f\u5f88\u7f55\u89c1\u3002<\/p>\n<p>\u603b\u4e4b\uff0c<code>blocking<\/code>\u5c5e\u6027\u662f\u4e2a\u4e0d\u77e5\u6240\u8c13\uff0c\u770b\u4e0d\u61c2\u7684CSS\u5c5e\u6027\u3002<\/p>\n<h4>\u517c\u5bb9\u6027<\/h4>\n<p>\u76ee\u524dblock\u5c5e\u6027\u9664\u4e86Firefox\u6d4f\u89c8\u5668\u4e4b\u5916\uff0c\u5176\u4f59\u7684\u73b0\u4ee3\u6d4f\u89c8\u5668\u90fd\u5df2\u7ecf\u652f\u6301\u4e86\uff0c\u5982\u4e0b\u622a\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202503\/2025-03-25_225123.png\" width=\"627\" height=\"222\" alt=\"blocking\u5c5e\u6027\u7684\u517c\u5bb9\u6027\" class=\"alignnone size-medium\" \/><\/p>\n<h3>\u4e09\u3001DOMTokenList\u7279\u6027<\/h3>\n<p>\u867d\u7136<code>blocking<\/code>\u5c5e\u6027\u957f\u5f97\u6d53\u7709\u5927\u773c\u7684\uff0c\u4f46\u7279\u4e48\u5c45\u7136\u8fd8\u662f\u4e2aDOMTokenList\u7279\u6027\u7684\u5c5e\u6027\u3002<\/p>\n<p>\u5728HTML\u8fd9\u95e8\u8bed\u8a00\u4e2d\uff0c\u5177\u6709DOMTokenList\u7684\u5c5e\u6027\u5e76\u4e0d\u591a\uff0c\u4e00\u4e2a\u662fclass\u5c5e\u6027\uff0c\u6bd4\u65b9\u8bf4\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u7684<code>classList.add()<\/code>\/<code>remove()<\/code>\u65b9\u6cd5\uff0c\u8fd8\u6709\u4e00\u4e2a\u662f<code>rel<\/code>\u5c5e\u6027\uff0c\u5bf9\u5e94\u7684\u662f<code>relList<\/code>\uff0c\u8fd8\u6709\u5c31\u662f<code>for<\/code>\u5c5e\u6027\u5427\uff0c\u800c\u4e14\u662f<code>&lt;output&gt;<\/code>\u5143\u7d20\u4e0a\u7684<code>for<\/code>\u5c5e\u6027\u3002<\/p>\n<p>\u6700\u540e\u4e00\u4e2a\u5c31\u662f\u672c\u6587\u4ecb\u7ecd\u7684<code>blocking<\/code>\u5c5e\u6027\u4e86\u3002<\/p>\n<p>\u540c\u6837\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>add<\/code>\/<code>remove<\/code>\/<code>toggle<\/code>\/<code>contains<\/code>\u7b49\u65b9\u6cd5\u5bf9\u76f8\u5173\u5c5e\u6027\u8fdb\u884c\u7f16\u8f91\u5904\u7406\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u6709HTML\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;script id=\"el\" async blocking=\"render\"&gt;&lt;\/script&gt;<\/pre>\n<p>\u5219\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u6240\u793a\u7684JavaScript\u4ee3\u7801\u589e\u52a0blocking\u53e6\u5916\u7684\u503c\uff0c\u6b64\u503c\u53ef\u4ee5\u4efb\u610f\u8bbe\u7f6e\uff0c\u867d\u7136\u5927\u6982\u7387\u6ca1\u4ec0\u4e48\u5b9e\u9645\u7684\u7528\u5904\u3002<\/p>\n<pre>el.blocking.add('zhangxinxu');<\/pre>\n<p>\u6b64\u65f6\uff0cHTML\u4fe1\u606f\u5c31\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre>&lt;script id=\"el\" async blocking=\"render zhangxinxu\"&gt;&lt;\/script&gt;<\/pre>\n<p>\u622a\u56fe\u793a\u610f\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202503\/2025-3-27_152119.png\" width=\"375\" height=\"56\" alt=\"add\u65b9\u6cd5\u6267\u884c\u7ed3\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5b8c\u6574\u5c5e\u6027\u548c\u65b9\u6cd5\u53c2\u89c1\uff1a<\/p>\n<pre>{\r\n  add: function add() { [native code] },\r\n  contains: function contains() { [native code] },\r\n  entries: function entries() { [native code] },\r\n  forEach: function forEach() { [native code] },\r\n  item: function item() { [native code] },\r\n  keys: function keys() { [native code] },\r\n  length: 2,\r\n  remove: function remove() { [native code] },\r\n  replace: function replace() { [native code] },\r\n  supports: function supports() { [native code] },\r\n  toggle: function toggle() { [native code] },\r\n  toString: function toString() { [native code] },\r\n  value: \"render zhangxinxu\",\r\n  values: function values() { [native code] }\r\n}<\/pre>\n<h3>\u56db\u3001\u70b9\u8bc4\u4e00\u4e0b\u603b\u7ed3\u4e00\u4e0b<\/h3>\n<p>\u82b1\u91cc\u80e1\u54e8\u4e0d\u77e5\u6240\u8c13\u7684HTML\u5c5e\u6027\uff0c\u5230\u73b0\u5728\u6211\u90fd\u6ca1\u641e\u6e05\u695a\u8fd9\u4e2a\u5c5e\u6027\u5230\u5e95\u662f\u505a\u4ec0\u4e48\u7528\u7684\u3002<\/p>\n<p>\u9e21\u808b\uff0c\u86cb\u75bc\uff0c\u4e0e\u73b0\u6709\u80fd\u529b\u91cd\u590d\uff0c\u5f88\u96be\u627e\u5230\u4e0e\u8bbe\u8ba1\u521d\u8877\u76f8\u5339\u914d\u7684\u573a\u666f\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\u552f\u4e00\u7684\u4f5c\u7528\uff0c\u53cd\u800c\u662f\u5176DOMTokenList\u7279\u6027\uff0c\u7ec8\u4e8e<code>&lt;script&gt;<\/code>\u3001<code>&lt;style&gt;<\/code>\u548c<code>&lt;link&gt;<\/code>\u5143\u7d20\u6709\u4e86\u4e2a\u53ef\u4ee5\u5b58\u50a8\u4efb\u610f\u5b57\u7b26\u4e32\u6570\u636e\u7684\u5c5e\u6027\u4e86\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5229\u7528blocking\u5c5e\u6027\u6807\u8bb0\u4efb\u610f\u7684\u6570\u636e\uff0c\u65b9\u4fbf\u6211\u4eec\u8fdb\u884c\u6570\u636e\u7684\u4ea4\u4e92\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u5c31\u8fd9\u6837\u5427\uff0c\u4ee5\u540e\u8981\u662f\u6b64\u5c5e\u6027\u6709\u66f4\u65b0\u8fed\u4ee3\uff0c\u6211\u518d\u6765\u66f4\u65b0\u5427\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202503\/2025-3-27_154011.jpeg\" width=\"173\" height=\"115\" alt=\"\u7f51\u7ea2\u56fe\u7247\u5409\u535c\u529b\u98ce\u683c\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=11568\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=11568<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202503\/blocking-cover.jpg\" width=\"160\" height=\"100\" alt=\"HTML blocking\u5c5e\u6027\" class=\"alignright size-medium\" loading=\"lazy\" \/><\/p>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e00\u4e2a\u5168\u65b0\u7684HTML\u7279\u6027blocking\u5c5e\u6027\uff0c\u4e0e\u9875\u9762\u6e32\u67d3\uff0c\u8d44\u6e90\u52a0\u8f7d\u3001\u7528\u6237\u4f53\u9a8c\u76f8\u5173\uff0c\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u8fdb\u6765\u4e86\u89e3\u4e0b\u662f\u5e72\u561b\u7528\u7684\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1097],"tags":[2045,845,9,1413,575],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11568"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=11568"}],"version-history":[{"count":8,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11568\/revisions"}],"predecessor-version":[{"id":11657,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11568\/revisions\/11657"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=11568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=11568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=11568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}