{"id":176,"date":"2025-11-25T09:01:34","date_gmt":"2025-11-25T01:01:34","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=176"},"modified":"2025-11-25T09:01:34","modified_gmt":"2025-11-25T01:01:34","slug":"html5-web-worker%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/25\/html5-web-worker%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%a4%84%e7%90%86\/","title":{"rendered":"HTML5 Web Worker(\u591a\u7ebf\u7a0b\u5904\u7406)"},"content":{"rendered":"\n<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4e2a <strong>\u6700\u6e05\u6670 + \u6700\u5b9e\u7528 + \u53ef\u76f4\u63a5\u8fd0\u884c<\/strong> \u7684 HTML5 Web Worker\uff08\u591a\u7ebf\u7a0b\uff09\u5b8c\u6574\u6559\u7a0b\u4e0e\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e00\u3001Web Worker \u662f\u4ec0\u4e48\uff1f<\/h1>\n\n\n\n<p>Web Worker \u5141\u8bb8\u4f60\u5728 <strong>\u6d4f\u89c8\u5668\u5f00\u8f9f\u5b50\u7ebf\u7a0b<\/strong> \u6765\u6267\u884c\u8017\u65f6\u4efb\u52a1\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u91cf\u8ba1\u7b97\uff08\u6392\u5e8f\u3001\u52a0\u5bc6\u3001\u538b\u7f29\uff09<\/li>\n\n\n\n<li>\u7f51\u7edc\u8bf7\u6c42\u5e76\u884c\u5904\u7406<\/li>\n\n\n\n<li>\u5927\u6570\u7ec4\u5904\u7406<\/li>\n\n\n\n<li>\u97f3\u89c6\u9891\u5904\u7406<\/li>\n\n\n\n<li>\u56fe\u50cf\u5904\u7406\uff08\u50cf\u7d20\u7ea7\u64cd\u4f5c\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u5b83\u7684\u7279\u70b9\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u70b9<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u2714 \u771f\u6b63\u7684\u591a\u7ebf\u7a0b<\/td><td>Worker \u5728\u6d4f\u89c8\u5668\u72ec\u7acb\u7ebf\u7a0b\u8fd0\u884c<\/td><\/tr><tr><td>\u2714 \u4e0d\u963b\u585e UI<\/td><td>\u4e3b\u7ebf\u7a0b\u4e0d\u4f1a\u5361\u987f<\/td><\/tr><tr><td>\u2714 \u72ec\u7acb\u4f5c\u7528\u57df<\/td><td>Worker \u4e0d\u80fd\u76f4\u63a5\u64cd\u4f5c DOM<\/td><\/tr><tr><td>\u2714 \u53ef\u4e0e\u4e3b\u7ebf\u7a0b\u901a\u4fe1<\/td><td>\u4f7f\u7528 <code>postMessage()<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e8c\u3001\u6700\u5c0f\u53ef\u8fd0\u884c\u793a\u4f8b\uff08\u63a8\u8350\u4ece\u8fd9\u91cc\u5f00\u59cb\uff09<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc4 <strong>main.html\uff08\u4e3b\u7ebf\u7a0b\uff09<\/strong><\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;!DOCTYPE html&gt;\n&amp;lt;html&gt;\n&amp;lt;head&gt;&amp;lt;meta charset=&quot;UTF-8&quot;&gt;&amp;lt;title&gt;Web Worker Demo&amp;lt;\/title&gt;&amp;lt;\/head&gt;\n&amp;lt;body&gt;\n  &amp;lt;button id=&quot;start&quot;&gt;\u5f00\u59cb\u8ba1\u7b97&amp;lt;\/button&gt;\n  &amp;lt;div id=&quot;result&quot;&gt;&amp;lt;\/div&gt;\n\n  &amp;lt;script&gt;\n    let worker;\n\n    document.getElementById(&quot;start&quot;).onclick = () =&gt; {\n      \/\/ \u521b\u5efa Worker\n      worker = new Worker(&quot;worker.js&quot;);\n\n      \/\/ \u63a5\u6536 Worker \u7ed3\u679c\n      worker.onmessage = function (e) {\n        document.getElementById(&quot;result&quot;).innerText = &quot;\u8ba1\u7b97\u7ed3\u679c: &quot; + e.data;\n        worker.terminate(); \/\/ \u7528\u5b8c\u5173\u95ed\n      };\n\n      \/\/ \u53d1\u9001\u6570\u636e\u5230 Worker\n      worker.postMessage(100000000); \/\/ \u7ed9 worker \u4e00\u4e2a\u53c2\u6570\n    };\n  &amp;lt;\/script&gt;\n&amp;lt;\/body&gt;\n&amp;lt;\/html&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc4 <strong>worker.js\uff08\u5b50\u7ebf\u7a0b\uff09<\/strong><\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\/\/ \u63a5\u6536\u4e3b\u7ebf\u7a0b\u6d88\u606f\nonmessage = function (e) {\n  const max = e.data;\n  \n  \/\/ \u505a\u4e00\u4e2a\u8017\u65f6\u4efb\u52a1\uff08\u5927\u91cf\u7d2f\u52a0\uff09\n  let sum = 0;\n  for (let i = 0; i &amp;lt; max; i++) {\n    sum += i;\n  }\n\n  \/\/ \u628a\u7ed3\u679c\u8fd4\u56de\u7ed9\u4e3b\u7ebf\u7a0b\n  postMessage(sum);\n};\n\n<\/pre><\/div>\n\n\n<p>\ud83d\udccc <strong>\u6548\u679c\uff1a<\/strong><br>\u70b9\u51fb\u6309\u94ae\uff0c\u4f60\u4f1a\u770b\u5230 UI \u4e0d\u4f1a\u5361\u987f\uff0c\u56e0\u4e3a\u8ba1\u7b97\u5728 Worker \u7ebf\u7a0b\u6267\u884c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e09\u3001Web Worker \u7684\u521b\u5efa\u65b9\u6cd5<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst worker = new Worker(&quot;worker.js&quot;);\nworker.postMessage(data);\nworker.onmessage = (e) =&gt; console.log(e.data);\nworker.terminate();\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u56db\u3001\u4e3b\u7ebf\u7a0b\u4e0e Worker \u901a\u4fe1<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3b\u7ebf\u7a0b \u2192 Worker<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nworker.postMessage({ x: 1, y: 2 });\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">Worker \u2192 \u4e3b\u7ebf\u7a0b<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\npostMessage(result);\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u53cc\u5411\u901a\u4fe1\uff08\u6700\u901a\u7528\uff09<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\/\/ main.js\nworker.onmessage = function (e) {\n  console.log(&quot;\u4e3b\u7ebf\u7a0b\u6536\u5230:&quot;, e.data);\n};\n\n\/\/ worker.js\nself.onmessage = function (e) {\n  console.log(&quot;worker \u6536\u5230:&quot;, e.data);\n};\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e94\u3001Worker \u5185\u4e0d\u80fd\u505a\u4ec0\u4e48\uff1f<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u529f\u80fd<\/th><th>\u80fd\u7528\u5417\uff1f<\/th><\/tr><\/thead><tbody><tr><td>DOM \u64cd\u4f5c<\/td><td>\u274c \u4e0d\u80fd<\/td><\/tr><tr><td>window \u5bf9\u8c61<\/td><td>\u274c \u4e0d\u80fd\u8bbf\u95ee<\/td><\/tr><tr><td>document<\/td><td>\u274c \u4e0d\u80fd\u4f7f\u7528<\/td><\/tr><tr><td>alert \/ confirm<\/td><td>\u274c \u4e0d\u80fd<\/td><\/tr><tr><td>Ajax\uff08fetch\/XMLHttpRequest\uff09<\/td><td>\u2714 \u80fd\u7528<\/td><\/tr><tr><td>\u5b9a\u65f6\u5668 setTimeout\/setInterval<\/td><td>\u2714 \u80fd\u7528<\/td><\/tr><tr><td>importScripts()<\/td><td>\u2714 \u80fd\u7528<\/td><\/tr><tr><td>IndexedDB<\/td><td>\u2714 \u80fd\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u516d\u3001\u652f\u6301\u6a21\u5757 Worker\uff08ES Module\uff09<\/h1>\n\n\n\n<p>\u5982\u679c\u4f60\u9879\u76ee\u9700\u8981 import\/ESM\uff0c\u53ef\u8fd9\u6837\u5199\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst worker = new Worker(&quot;worker.js&quot;, { type: &quot;module&quot; });\n\n<\/pre><\/div>\n\n\n<p>worker.js:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nimport { heavyCalc } from &quot;.\/calc.js&quot;;\n\nonmessage = (e) =&gt; postMessage(heavyCalc(e.data));\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e03\u3001\u591a\u4e2a Worker \u5e76\u884c\u52a0\u901f<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst workers = &#x5B;];\n\nfor (let i = 0; i &amp;lt; 4; i++) {\n  workers&#x5B;i] = new Worker(&quot;worker.js&quot;);\n  workers&#x5B;i].postMessage(i);\n}\n\n<\/pre><\/div>\n\n\n<p>\u7528\u4e8e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u6587\u4ef6\u5207\u7247\u5904\u7406<\/li>\n\n\n\n<li>\u56fe\u50cf\u5904\u7406<\/li>\n\n\n\n<li>\u5927\u89c4\u6a21\u6570\u636e\u8ba1\u7b97<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u516b\u3001\u793a\u4f8b\uff1a\u5229\u7528 Worker \u52a0\u901f\u5927\u6570\u7ec4\u6392\u5e8f 10 \u500d<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">main.js<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst worker = new Worker(&quot;sortWorker.js&quot;);\n\nworker.onmessage = (e) =&gt; {\n  console.log(&quot;\u6392\u5e8f\u5b8c\u6210&quot;, e.data);\n};\n\nworker.postMessage(largeArray);\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">sortWorker.js<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nonmessage = (e) =&gt; {\n  const arr = e.data;\n  arr.sort((a, b) =&gt; a - b);\n  postMessage(arr);\n};\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2705 \u4e5d\u3001\u793a\u4f8b\uff1aWorker \u6267\u884c fetch<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nonmessage = async () =&gt; {\n  const res = await fetch(&quot;https:\/\/api.example.com\/data&quot;);\n  postMessage(await res.json());\n};\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd1f \u5341\u3001Worker \u9519\u8bef\u6355\u83b7<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nworker.onerror = function (err) {\n  console.error(&quot;worker error&quot;, err.message);\n};\n\n<\/pre><\/div>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4e2a \u6700\u6e05\u6670 + \u6700\u5b9e\u7528 + \u53ef\u76f4\u63a5\u8fd0\u884c \u7684 HTML5 Web Wor&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2025\/11\/25\/html5-web-worker%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%a4%84%e7%90%86\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-176","post","type-post","status-publish","format-standard","hentry","category-html5"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=176"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/176\/revisions"}],"predecessor-version":[{"id":177,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/176\/revisions\/177"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}