{"id":53223,"date":"2024-12-03T15:31:30","date_gmt":"2024-12-03T07:31:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53223\/"},"modified":"2024-12-03T15:31:30","modified_gmt":"2024-12-03T07:31:30","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-javascript-%e5%9c%a8%e9%a1%b5%e9%9d%a2%e5%85%b3%e9%97%ad%e5%89%8d%e6%98%be%e7%a4%ba%e7%a1%ae%e8%ae%a4%e6%8f%90%e7%a4%ba%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53223\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f <\/h1>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7c73\u4e91\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f \u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241128\/17327633966747df04b03c3.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u9875\u9762\u5173\u95ed\u524d\u5982\u4f55\u901a\u8fc7 JavaScript \u63d0\u4f9b\u786e\u8ba4\u63d0\u793a<\/strong><\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u7528\u6237\u5728\u610f\u5916\u5173\u95ed\u9875\u9762\u65f6\u4e22\u5931\u91cd\u8981\u6570\u636e\u6216\u64cd\u4f5c\uff0cJavaScript \u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5728\u7528\u6237\u5c1d\u8bd5\u5173\u95ed\u9875\u9762\u65f6\u663e\u793a\u786e\u8ba4\u5bf9\u8bdd\u6846\u3002<\/p>\n<p>\u8981\u5b9e\u73b0\u6b64\u529f\u80fd\uff0c\u9700\u8981\u5728\u9875\u9762\u5173\u95ed\u4e8b\u4ef6\u4e2d\u76d1\u542c\u5668\u3002\u9875\u9762\u5173\u95ed\u4e8b\u4ef6\u901a\u5e38\u79f0\u4e3a &#8220;beforeunload&#8221;\uff0c\u53ef\u4ee5\u5982\u4e0b\u6ce8\u518c\uff1a<\/p>\n<pre>window.addEventListener(\"beforeunload\", event =&gt; {\n  \/\/ \u5728\u8fd9\u91cc\u5904\u7406\u5173\u95ed\u524d\u786e\u8ba4\u63d0\u793a\u903b\u8f91\n});<\/pre>\n<p>\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u5185\uff0c\u53ef\u4ee5\u4f7f\u7528 event.returnValue \u6216 event.preventDefault() \u6765\u63a7\u5236\u9875\u9762\u5173\u95ed\u884c\u4e3a\uff1a<\/p>\n<ul>\n<li><strong>event.returnValue:<\/strong> \u8bbe\u7f6e\u6b64\u5c5e\u6027\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5b83\u5c06\u5728\u786e\u8ba4\u5bf9\u8bdd\u6846\u4e2d\u663e\u793a\u4e3a\u63d0\u793a\u6d88\u606f\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u63d0\u793a\u6d88\u606f\uff0c\u6d4f\u89c8\u5668\u4f1a\u663e\u793a\u9ed8\u8ba4\u6d88\u606f\uff0c\u4f8b\u5982 &#8220;\u4f60\u786e\u5b9a\u8981\u79bb\u5f00\u6b64\u9875\u9762\u5417\uff1f&#8221;\u3002<\/li>\n<li><strong>event.preventDefault():<\/strong> \u8c03\u7528\u6b64\u65b9\u6cd5\u4f1a\u963b\u6b62\u9875\u9762\u5173\u95ed\u3002\u5982\u679c\u7528\u6237\u5355\u51fb\u786e\u8ba4\u5bf9\u8bdd\u6846\u4e2d\u7684 &#8220;\u786e\u5b9a&#8221; \u6309\u94ae\uff0c\u6b64\u65b9\u6cd5\u5fc5\u987b\u624b\u52a8\u8c03\u7528\u624d\u80fd\u5173\u95ed\u9875\u9762\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u8981\u663e\u793a\u81ea\u5b9a\u4e49\u786e\u8ba4\u6d88\u606f\u5e76\u624b\u52a8\u63a7\u5236\u9875\u9762\u5173\u95ed\u884c\u4e3a\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>window.addEventListener(\"beforeunload\", event =&gt; {\n  event.returnValue = \"\u6b63\u5728\u8fdb\u884c\u672a\u4fdd\u5b58\u7684\u66f4\u6539\uff0c\u60a8\u786e\u5b9a\u8981\u79bb\u5f00\u5417\uff1f\";\n\n  if (!confirm(event.returnValue)) {\n    event.preventDefault();\n  }\n});<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f \u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   Python\u534f\u7a0b\u62a5\u9519\uff1aasyncio.wait()\u51fd\u6570\u53c2\u6570\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f \u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7c73\u4e91\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300a\u5982\u4f55\u4f7f\u7528 JavaScript \u5728\u9875\u9762\u5173\u95ed\u524d\u663e\u793a\u786e\u8ba4\u63d0\u793a\uff1f \u300b\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! 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