{"id":166905,"date":"2024-05-08T15:51:57","date_gmt":"2024-05-08T07:51:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166905.html"},"modified":"2024-05-08T15:52:05","modified_gmt":"2024-05-08T07:52:05","slug":"javascript%e8%83%bd%e5%90%a6%e4%bd%bf%e7%bd%91%e9%a1%b5%e6%97%a0%e6%b3%95%e8%bf%94%e5%9b%9e%e6%88%96%e5%9c%a8%e7%bd%91%e9%a1%b5%e5%85%b3%e9%97%ad%e5%90%8e%e7%bb%a7%e7%bb%ad%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166905.html","title":{"rendered":"javascript\u80fd\u5426\u4f7f\u7f51\u9875\u65e0\u6cd5\u8fd4\u56de\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26234235\/8f2f014f-725a-42a3-8b5f-2ecbf726050a.webp\" alt=\"javascript\u80fd\u5426\u4f7f\u7f51\u9875\u65e0\u6cd5\u8fd4\u56de\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\" \/><\/p>\n<p><p>JavaScript \u7684\u8bbe\u8ba1\u521d\u8877\u5e76\u4e0d\u5305\u62ec\u9650\u5236\u7528\u6237\u7684\u6d4f\u89c8\u4f53\u9a8c\uff0c\u5982\u7981\u6b62\u8fd4\u56de\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\u4ee3\u7801\u3002\u7136\u800c\uff0c<strong>JavaScript \u80fd\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u901a\u8fc7\u4e8b\u4ef6\u76d1\u542c\u3001\u5f39\u7a97\u63d0\u793a\u548c\u672c\u5730\u6301\u4e45\u5316<\/strong>\u6765\u5f71\u54cd\u7528\u6237\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n<p><p>\u4ee5\u9632\u6b62\u7f51\u9875\u540e\u9000\u4e3a\u4f8b\uff0c\u867d\u7136\u4e0d\u80fd\u5f7b\u5e95\u7981\u7528\u6d4f\u89c8\u5668\u7684\u540e\u9000\u529f\u80fd\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u76d1\u542c <code>popstate<\/code> \u4e8b\u4ef6\uff0c\u5f53\u7528\u6237\u5c1d\u8bd5\u540e\u9000\u65f6\uff0c\u8fdb\u884c\u9875\u9762\u7684\u72b6\u6001\u7ba1\u7406\u6216\u663e\u793a\u63d0\u793a\u4fe1\u606f\u3002\u81f3\u4e8e\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\uff0cJavaScript \u672c\u8eab\u4e0d\u80fd\u6267\u884c\u5173\u95ed\u540e\u7684\u64cd\u4f5c\uff0c\u4f46\u53ef\u4ee5\u501f\u52a9 Web Workers \u5728\u9875\u9762\u540e\u53f0\u8fd0\u884c\u67d0\u4e9b\u4efb\u52a1\uff0c<strong>\u6216\u901a\u8fc7\u6d4f\u89c8\u5668\u7684\u672c\u5730\u5b58\u50a8\u673a\u5236<\/strong>\uff0c\u5728\u7528\u6237\u91cd\u65b0\u6253\u5f00\u7f51\u9875\u65f6\u6062\u590d\u6216\u7ee7\u7eed\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u9875\u9762\u64cd\u4f5c\u9650\u5236<\/h2>\n<\/p>\n<p><p><strong>\u9632\u6b62\u9875\u9762\u540e\u9000<\/strong><\/p>\n<\/p>\n<p><p>\u4e00\u79cd\u4f7f\u7f51\u9875\u96be\u4ee5\u8fd4\u56de\u7684\u65b9\u6cd5\u662f\u5728\u7f51\u9875\u52a0\u8f7d\u65f6\u901a\u8fc7 JavaScript \u52a8\u6001\u64cd\u4f5c\u6d4f\u89c8\u5668\u7684\u5386\u53f2\u8bb0\u5f55\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7 <code>history.pushState<\/code> \u5b9e\u73b0\uff0c\u5b83\u80fd\u5411\u6d4f\u89c8\u5668\u7684\u4f1a\u8bdd\u5386\u53f2\u6808\u6dfb\u52a0\u4e00\u6761\u8bb0\u5f55\u3002\u5f53\u7528\u6237\u70b9\u51fb\u540e\u9000\u6309\u94ae\u65f6\uff0c\u53ef\u4ee5\u76d1\u542c <code>window<\/code> \u5bf9\u8c61\u7684 <code>popstate<\/code> \u4e8b\u4ef6\uff0c\u7136\u540e\u51b3\u5b9a\u5982\u4f55\u54cd\u5e94\u3002\u901a\u5e38\uff0c\u7f51\u7ad9\u53ef\u80fd\u4f1a\u5c55\u793a\u4e00\u4e2a\u786e\u8ba4\u6846\u63d0\u9192\u7528\u6237\u662f\u5426\u771f\u7684\u5e0c\u671b\u79bb\u5f00\u5f53\u524d\u9875\u9762\u3002<\/p>\n<\/p>\n<p><p>\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">window.addEventListener(&#039;load&#039;, function() {<\/p>\n<p>    history.pushState(null, null, document.URL);<\/p>\n<p>    window.addEventListener(&#039;popstate&#039;, function () {<\/p>\n<p>        history.pushState(null, null, document.URL);<\/p>\n<p>        \/\/ \u5728\u6b64\u5904\u6dfb\u52a0\u63d0\u793a\u4fe1\u606f\u6216\u5176\u4ed6\u884c\u4e3a<\/p>\n<p>    });<\/p>\n<p>});<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u63d0\u793a\u7528\u6237\u5728\u5173\u95ed\u524d\u786e\u8ba4<\/strong><\/p>\n<\/p>\n<p><p>\u5f53\u7528\u6237\u5c1d\u8bd5\u5173\u95ed\u7f51\u9875\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>beforeunload<\/code> \u4e8b\u4ef6\u5f39\u51fa\u4e00\u4e2a\u63d0\u793a\u6846\uff0c\u8be2\u95ee\u7528\u6237\u662f\u5426\u771f\u7684\u60f3\u5173\u95ed\u9875\u9762\u3002\u8fd9\u4e0d\u662f\u7981\u6b62\u5173\u95ed\u9875\u9762\uff0c\u4f46\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u8be2\u95ee\u7528\u6237\u662f\u5426\u6709\u672a\u4fdd\u5b58\u7684\u66f4\u6539\uff0c\u4ece\u800c\u9632\u6b62\u6570\u636e\u4e22\u5931\u3002<\/p>\n<\/p>\n<p><p>\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">window.addEventListener(&#039;beforeunload&#039;, function (e) {<\/p>\n<p>    \/\/ \u8bbe\u7f6e\u786e\u8ba4\u6846\u7684\u6587\u6848<\/p>\n<p>    var confirmationMessage = &#039;\u4f60\u6709\u672a\u4fdd\u5b58\u7684\u66f4\u6539\uff0c\u786e\u5b9a\u8981\u79bb\u5f00\u5417\uff1f&#039;;<\/p>\n<p>    e.returnValue = confirmationMessage;     \/\/ \u517c\u5bb9\u67d0\u4e9b\u6d4f\u89c8\u5668<\/p>\n<p>    return confirmationMessage;              \/\/ \u6807\u51c6\u884c\u4e3a<\/p>\n<p>});<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e8c\u3001\u540e\u53f0\u548c\u79bb\u7ebf\u6267\u884c<\/h2>\n<\/p>\n<p><p><strong>\u4f7f\u7528 Web Workers<\/strong><\/p>\n<\/p>\n<p><p>JavaScript \u7684 Web Workers \u5141\u8bb8\u5728\u4e3b\u7ebf\u7a0b\u4e4b\u5916\u7684\u540e\u53f0\u7ebf\u7a0b\u4e2d\u6267\u884c\u4ee3\u7801\uff0c\u8fd9\u610f\u5473\u7740\u5373\u4f7f\u9875\u9762\u6ca1\u6709\u88ab\u6fc0\u6d3b\uff0cWorkers\u91cc\u7684\u4ee3\u7801\u4e5f\u80fd\u6267\u884c\u3002\u4f46\u662f\uff0cWeb Workers \u7684\u4f7f\u7528\u6709\u9650\u5236\uff0c\u5b83\u4eec\u4e0d\u53ef\u4ee5\u8bbf\u95ee DOM\u3002<\/p>\n<\/p>\n<p><p>\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Worker \u5b9e\u4f8b<\/p>\n<p>var myWorker = new Worker(&#039;worker.js&#039;);<\/p>\n<p>\/\/ \u4e3b\u7ebf\u7a0b\u53d1\u9001\u6d88\u606f\u5230 Worker<\/p>\n<p>myWorker.postMessage(&#039;Hello&#039;);<\/p>\n<p>\/\/ \u4e3b\u7ebf\u7a0b\u63a5\u6536\u6765\u81ea Worker \u7684\u6d88\u606f<\/p>\n<p>myWorker.onmessage = function(e) {<\/p>\n<p>    console.log(&#039;Message from Worker:&#039;, e.data);<\/p>\n<p>};<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u672c\u5730\u6301\u4e45\u5316<\/strong><\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4f7f\u7528 LocalStorage\u3001SessionStorage \u6216 IndexedDB \u7b49\u6d4f\u89c8\u5668\u63d0\u4f9b\u7684\u6570\u636e\u5b58\u50a8\u65b9\u6848\uff0c\u53ef\u4ee5\u5728\u7528\u6237\u5173\u95ed\u9875\u9762\u540e\u4fdd\u5b58\u6570\u636e\uff0c\u5e76\u5728\u7528\u6237\u8fd4\u56de\u65f6\u7ee7\u7eed\u4e0a\u6b21\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>LocalStorage \u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">\/\/ \u5b58\u50a8\u6570\u636e<\/p>\n<p>localStorage.setItem(&#039;myData&#039;, &#039;something important&#039;);<\/p>\n<p>\/\/ \u83b7\u53d6\u6570\u636e<\/p>\n<p>var data = localStorage.getItem(&#039;myData&#039;);<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e09\u3001\u5b89\u5168\u6027\u548c\u7528\u6237\u4f53\u9a8c\u8003\u91cf<\/h2>\n<\/p>\n<p><p>\u5bf9\u4e8e\u4efb\u4f55\u8bd5\u56fe\u9650\u5236\u7528\u6237\u81ea\u7531\u4f7f\u7528\u7f51\u9875\u7684\u884c\u4e3a\uff0c\u90fd\u9700\u8981\u8c28\u614e\u8003\u8651\u3002\u963b\u6b62\u7528\u6237\u79bb\u5f00\u6216\u5728\u9875\u9762\u5173\u95ed\u540e\u6267\u884c\u4ee3\u7801\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7528\u6237\u5bf9\u7f51\u7ad9\u7684\u4fe1\u4efb\u5ea6\u964d\u4f4e\uff0c\u5e76\u4e14\u67d0\u4e9b\u884c\u4e3a\u53ef\u80fd\u4f1a\u8fdd\u53cd\u6d4f\u89c8\u5668\u653f\u7b56\u6216\u7528\u6237\u9690\u79c1\uff0c\u56e0\u6b64\uff0c\u8fd9\u4e9b\u6280\u672f\u5e94\u5f53\u614e\u91cd\u4f7f\u7528\uff0c\u5e76\u4e14\u603b\u662f\u4ee5\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u548c\u5b89\u5168\u6027\u4e3a\u4f18\u5148\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3\u8d77\u6765\uff0c\u867d\u7136<strong>JavaScript \u63d0\u4f9b\u4e86\u4e00\u4e9b\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5f71\u54cd\u7528\u6237\u884c\u4e3a\u7684\u624b\u6bb5<\/strong>\uff0c\u4f46\u662f\u5176\u80fd\u529b\u662f\u6709\u9650\u7684\uff0c\u5e76\u4e14\u5e94\u5f53\u5728\u5408\u7406\u4e14\u7528\u6237\u53cb\u597d\u7684\u6846\u67b6\u5185\u4f7f\u7528\u8fd9\u4e9b\u529f\u80fd\u3002\u5f00\u53d1\u8005\u5728\u8bbe\u8ba1\u7f51\u9875\u65f6\uff0c\u5e94\u4e3b\u8981\u8003\u8651\u5982\u4f55\u63d0\u4f9b\u4e00\u4e2a\u65e2\u5b89\u5168\u53c8\u6613\u4e8e\u4f7f\u7528\u7684\u73af\u5883\uff0c\u800c\u4e0d\u662f\u9650\u5236\u7528\u6237\u7684\u6b63\u5e38\u6d4f\u89c8\u4e60\u60ef\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u95ee\u98981\uff1a<\/strong> \u6709\u6ca1\u6709\u529e\u6cd5\u4f7f\u7528Javascript\u963b\u6b62\u7f51\u9875\u8fd4\u56de\u64cd\u4f5c\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\uff1f<\/p>\n<p><strong>\u7b54\u68481\uff1a<\/strong> \u5728Javascript\u4e2d\uff0c\u6211\u4eec\u65e0\u6cd5\u76f4\u63a5\u963b\u6b62\u7528\u6237\u8fdb\u884c\u7f51\u9875\u8fd4\u56de\u64cd\u4f5c\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\u3002\u8fd9\u662f\u7531\u6d4f\u89c8\u5668\u7684\u5b89\u5168\u7b56\u7565\u6240\u51b3\u5b9a\u7684\uff0c\u65e8\u5728\u4fdd\u62a4\u7528\u6237\u7684\u9690\u79c1\u548c\u7528\u6237\u4f53\u9a8c\u3002Javascript\u7684\u8bbe\u8ba1\u521d\u8877\u662f\u4e3a\u4e86\u589e\u5f3a\u7f51\u9875\u7684\u4ea4\u4e92\u6027\u548c\u52a8\u6001\u6027\uff0c\u800c\u4e0d\u662f\u63a7\u5236\u7528\u6237\u6d4f\u89c8\u5668\u7684\u884c\u4e3a\u3002<\/p>\n<p><strong>\u95ee\u98982\uff1a<\/strong> \u6709\u6ca1\u6709\u529e\u6cd5\u901a\u8fc7Javascript\u6765\u63a7\u5236\u6d4f\u89c8\u5668\uff0c\u4f7f\u7f51\u9875\u65e0\u6cd5\u8fd4\u56de\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\uff1f<\/p>\n<p><strong>\u7b54\u68482\uff1a<\/strong> \u76ee\u524d\u7684\u4e3b\u6d41\u6d4f\u89c8\u5668\u90fd\u6ca1\u6709\u63d0\u4f9b\u76f4\u63a5\u7684API\u6216\u65b9\u6cd5\u6765\u5b9e\u73b0\u901a\u8fc7Javascript\u6765\u63a7\u5236\u963b\u6b62\u7f51\u9875\u8fd4\u56de\u64cd\u4f5c\u6216\u5728\u7f51\u9875\u5173\u95ed\u540e\u7ee7\u7eed\u6267\u884c\u3002\u8fd9\u79cd\u884c\u4e3a\u4f1a\u88ab\u89c6\u4e3a\u6076\u610f\u4ee3\u7801\u6216\u6ee5\u7528\u7528\u6237\u9690\u79c1\u7684\u884c\u4e3a\uff0c\u53ef\u80fd\u5bfc\u81f4\u7f51\u9875\u88ab\u6d4f\u89c8\u5668\u963b\u6b62\u52a0\u8f7d\u6216\u7528\u6237\u88ab\u63d0\u9192\u8be5\u7f51\u9875\u5b58\u5728\u6f5c\u5728\u98ce\u9669\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u5728\u7f16\u5199\u7f51\u9875\u65f6\u5e94\u5c0a\u91cd\u7528\u6237\u7684\u9690\u79c1\u548c\u6d4f\u89c8\u5668\u7684\u5b89\u5168\u7b56\u7565\uff0c\u4e0d\u53bb\u8bd5\u56fe\u5e72\u6270\u6216\u63a7\u5236\u6d4f\u89c8\u5668\u7684\u884c\u4e3a\u3002<\/p>\n<p><strong>\u95ee\u98983\uff1a<\/strong> 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