{"id":508601,"date":"2024-06-05T02:18:51","date_gmt":"2024-06-04T18:18:51","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/508601.html"},"modified":"2024-06-05T02:18:53","modified_gmt":"2024-06-04T18:18:53","slug":"js%e9%a1%b9%e7%9b%ae%e4%b8%ad-%e5%a6%82%e4%bd%95%e7%ae%a1%e7%90%86%e5%86%85%e5%ad%98%e6%ba%a2%e5%87%ba","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/508601.html","title":{"rendered":"js\u9879\u76ee\u4e2d \u5982\u4f55\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25102723\/d7495aee-8677-4f6d-93ea-65337416ceb9.webp\" alt=\"js\u9879\u76ee\u4e2d \u5982\u4f55\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa\" \/><\/p>\n<p><p><strong>\u5728JavaScript\u9879\u76ee\u4e2d\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa\u7684\u95ee\u9898\uff0c\u6838\u5fc3\u65b9\u6cd5\u5305\u62ec\uff1a\u4f18\u5316\u6570\u636e\u7ed3\u6784\u3001\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3001\u4f7f\u7528\u5408\u9002\u7684\u7b97\u6cd5\u3001\u5b9a\u671f\u8fdb\u884c\u5185\u5b58\u5206\u6790\u548c\u4f18\u5316\u3002<\/strong> \u5176\u4e2d\uff0c<strong>\u907f\u514d\u5185\u5b58\u6cc4\u6f0f<\/strong> 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8\u4e0d\u518d\u9700\u8981\u95ed\u5305\u65f6\uff0c\u624b\u52a8\u91ca\u653e\u95ed\u5305\u5f15\u7528\u7684\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<p><h2>\u4e09\u3001\u4f7f\u7528\u5408\u9002\u7684\u5de5\u5177\u8fdb\u884c\u5185\u5b58\u5206\u6790<\/h2>\n<\/p>\n<p><p>\u4f7f\u7528\u5de5\u5177\u8fdb\u884c\u5185\u5b58\u5206\u6790\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u627e\u51fa\u5185\u5b58\u6cc4\u6f0f\u548c\u5185\u5b58\u6ea2\u51fa\u7684\u539f\u56e0\uff0c\u5e76\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<\/p>\n<p><h3>1\u3001Chrome DevTools<\/h3>\n<\/p>\n<p><p>Chrome DevTools\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5185\u5b58\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5206\u6790\u548c\u8c03\u8bd5\u5185\u5b58\u95ee\u9898\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>Heap Snapshot<\/strong>\uff1a\u901a\u8fc7Heap Snapshot\uff0c\u53ef\u4ee5\u6355\u83b7\u5f53\u524d\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u627e\u51fa\u5185\u5b58\u6cc4\u6f0f\u7684\u6839\u6e90\u3002<\/li>\n<li><strong>Allocation Timeline<\/strong>\uff1a\u901a\u8fc7Allocation Timeline\uff0c\u53ef\u4ee5\u6355\u83b7\u5185\u5b58\u5206\u914d\u7684\u65f6\u95f4\u7ebf\uff0c\u627e\u51fa\u5185\u5b58\u4f7f\u7528\u7684\u9ad8\u5cf0\u65f6\u6bb5\u3002<\/li>\n<\/ul>\n<p><h3>2\u3001Node.js\u5185\u5b58\u5206\u6790\u5de5\u5177<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8eNode.js\u9879\u76ee\uff0c\u53ef\u4ee5\u4f7f\u7528Node.js\u5185\u5b58\u5206\u6790\u5de5\u5177\u8fdb\u884c\u5185\u5b58\u5206\u6790\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>node-inspector<\/strong>\uff1anode-inspector\u662f\u4e00\u4e2aNode.js\u7684\u8c03\u8bd5\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5206\u6790\u548c\u8c03\u8bd5Node.js\u9879\u76ee\u4e2d\u7684\u5185\u5b58\u95ee\u9898\u3002<\/li>\n<li><strong>heapdump<\/strong>\uff1aheapdump\u53ef\u4ee5\u751f\u6210Node.js\u9879\u76ee\u7684Heap Snapshot\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u5206\u6790\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<p><h2>\u56db\u3001\u5b9a\u671f\u8fdb\u884c\u5185\u5b58\u4f18\u5316<\/h2>\n<\/p>\n<p><p>\u5b9a\u671f\u8fdb\u884c\u5185\u5b58\u4f18\u5316\uff0c\u53ef\u4ee5\u786e\u4fddJavaScript\u9879\u76ee\u7684\u5185\u5b58\u4f7f\u7528\u4fdd\u6301\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<p><h3>1\u3001<a href=\"https:\/\/docs.pingcode.com\/code-review\" target=\"_blank\">\u4ee3\u7801\u5ba1\u67e5<\/a><\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee3\u7801\u5ba1\u67e5\uff0c\u53ef\u4ee5\u627e\u51fa\u6f5c\u5728\u7684\u5185\u5b58\u6cc4\u6f0f\u548c\u5185\u5b58\u6ea2\u51fa\u95ee\u9898\uff0c\u5e76\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u4ee3\u7801\u89c4\u8303<\/strong>\uff1a\u5236\u5b9a\u4ee3\u7801\u89c4\u8303\uff0c\u786e\u4fdd\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u907f\u514d\u6f5c\u5728\u7684\u5185\u5b58\u95ee\u9898\u3002<\/li>\n<li><strong>\u4ee3\u7801\u91cd\u6784<\/strong>\uff1a\u901a\u8fc7\u4ee3\u7801\u91cd\u6784\uff0c\u4f18\u5316\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\uff0c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><h3>2\u3001\u81ea\u52a8\u5316\u6d4b\u8bd5<\/h3>\n<\/p>\n<p><p>\u81ea\u52a8\u5316\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u53ca\u65f6\u53d1\u73b0\u548c\u4fee\u590d\u5185\u5b58\u95ee\u9898\uff0c\u786e\u4fdd\u9879\u76ee\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u5355\u5143\u6d4b\u8bd5<\/strong>\uff1a\u901a\u8fc7\u5355\u5143\u6d4b\u8bd5\uff0c\u786e\u4fdd\u6bcf\u4e2a\u6a21\u5757\u7684\u5185\u5b58\u4f7f\u7528\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002<\/li>\n<li><strong>\u6027\u80fd\u6d4b\u8bd5<\/strong>\uff1a\u901a\u8fc7\u6027\u80fd\u6d4b\u8bd5\uff0c\u6a21\u62df\u5b9e\u9645\u4f7f\u7528\u573a\u666f\uff0c\u68c0\u6d4b\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u627e\u51fa\u6f5c\u5728\u7684\u5185\u5b58\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p><h2>\u4e94\u3001\u5408\u7406\u4f7f\u7528\u5783\u573e\u56de\u6536\u673a\u5236<\/h2>\n<\/p>\n<p><p>JavaScript\u7684\u5783\u573e\u56de\u6536\u673a\u5236\u53ef\u4ee5\u81ea\u52a8\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u4f46\u5408\u7406\u4f7f\u7528\u5783\u573e\u56de\u6536\u673a\u5236\u53ef\u4ee5\u63d0\u9ad8\u9879\u76ee\u7684\u5185\u5b58\u4f7f\u7528\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h3>1\u3001\u4e86\u89e3\u5783\u573e\u56de\u6536\u673a\u5236<\/h3>\n<\/p>\n<p><p>\u4e86\u89e3JavaScript\u7684\u5783\u573e\u56de\u6536\u673a\u5236\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7ba1\u7406\u5185\u5b58\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5<\/strong>\uff1aJavaScript\u7684\u5783\u573e\u56de\u6536\u673a\u5236\u4e3b\u8981\u57fa\u4e8e\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5\uff0c\u901a\u8fc7\u6807\u8bb0\u4e0d\u518d\u4f7f\u7528\u7684\u5bf9\u8c61\uff0c\u5e76\u6e05\u9664\u8fd9\u4e9b\u5bf9\u8c61\u5360\u7528\u7684\u5185\u5b58\u3002<\/li>\n<li><strong>\u5206\u4ee3\u56de\u6536\u673a\u5236<\/strong>\uff1a\u73b0\u4ee3JavaScript\u5f15\u64ce\u4f7f\u7528\u5206\u4ee3\u56de\u6536\u673a\u5236\uff0c\u5c06\u5bf9\u8c61\u5206\u4e3a\u65b0\u751f\u4ee3\u548c\u8001\u751f\u4ee3\uff0c\u5206\u522b\u8fdb\u884c\u56de\u6536\uff0c\u63d0\u9ad8\u5783\u573e\u56de\u6536\u6548\u7387\u3002<\/li>\n<\/ul>\n<p><h3>2\u3001\u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536<\/h3>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536\u53ef\u4ee5\u63d0\u9ad8\u5185\u5b58\u4f7f\u7528\u6548\u7387\uff0c\u4f46\u9700\u8981\u8c28\u614e\u4f7f\u7528\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u624b\u52a8\u89e6\u53d1<\/strong>\uff1a\u901a\u8fc7\u8c03\u7528<code>global.gc()<\/code>\uff0c\u53ef\u4ee5\u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536\uff0c\u4f46\u9700\u8981\u5728Node.js\u4e2d\u542f\u7528<code>--expose-gc<\/code>\u9009\u9879\u3002<\/li>\n<li><strong>\u5408\u7406\u4f7f\u7528<\/strong>\uff1a\u624b\u52a8\u89e6\u53d1\u5783\u573e\u56de\u6536\u53ef\u80fd\u4f1a\u5f71\u54cd\u6027\u80fd\uff0c\u5e94\u8be5\u5728\u5185\u5b58\u4f7f\u7528\u9ad8\u5cf0\u65f6\u6bb5\u6216\u5185\u5b58\u6cc4\u6f0f\u68c0\u6d4b\u65f6\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><h2>\u516d\u3001\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u7b56\u7565<\/h2>\n<\/p>\n<p><p>\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u7b56\u7565\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7ba1\u7406\u5185\u5b58\uff0c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<p><h3>1\u3001\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58<\/h3>\n<\/p>\n<p><p>\u5408\u7406\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5185\u5b58\u4f7f\u7528\u6548\u7387\uff0c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u6309\u9700\u5206\u914d<\/strong>\uff1a\u6309\u9700\u5206\u914d\u5185\u5b58\uff0c\u907f\u514d\u4e00\u6b21\u6027\u5206\u914d\u8fc7\u591a\u5185\u5b58\uff0c\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\u3002<\/li>\n<li><strong>\u53ca\u65f6\u91ca\u653e<\/strong>\uff1a\u53ca\u65f6\u91ca\u653e\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002<\/li>\n<\/ul>\n<p><h3>2\u3001\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u6a21\u5f0f<\/h3>\n<\/p>\n<p><p>\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u6a21\u5f0f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7ba1\u7406\u5185\u5b58\uff0c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf\u52a0\u8f7d<\/strong>\uff1a\u901a\u8fc7\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u907f\u514d\u4e00\u6b21\u6027\u52a0\u8f7d\u8fc7\u591a\u6570\u636e\uff0c\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\u3002<\/li>\n<li><strong>\u6309\u9700\u52a0\u8f7d<\/strong>\uff1a\u901a\u8fc7\u6309\u9700\u52a0\u8f7d\uff0c\u907f\u514d\u52a0\u8f7d\u4e0d\u5fc5\u8981\u7684\u6570\u636e\uff0c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><h2>\u4e03\u3001\u603b\u7ed3<\/h2>\n<\/p>\n<p><p>\u5728JavaScript\u9879\u76ee\u4e2d\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa\u662f\u4e00\u4e2a\u590d\u6742\u4f46\u91cd\u8981\u7684\u4efb\u52a1\u3002\u901a\u8fc7<strong>\u4f18\u5316\u6570\u636e\u7ed3\u6784\u3001\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3001\u4f7f\u7528\u5408\u9002\u7684\u7b97\u6cd5\u3001\u5b9a\u671f\u8fdb\u884c\u5185\u5b58\u5206\u6790\u548c\u4f18\u5316<\/strong>\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u6548\u7387\u3002\u7279\u522b\u662f\u5728\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u65b9\u9762\uff0c\u5f00\u53d1\u8005\u9700\u8981\u6ce8\u610f\u5faa\u73af\u5f15\u7528\u3001\u672a\u6e05\u7406\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u3001\u672a\u91ca\u653e\u7684\u95ed\u5305\u7b49\u95ee\u9898\uff0c\u53ca\u65f6\u6e05\u9664\u4e0d\u518d\u4f7f\u7528\u7684\u5bf9\u8c61\u548c\u4e8b\u4ef6\u7ed1\u5b9a\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u5408\u9002\u7684\u5de5\u5177\u8fdb\u884c\u5185\u5b58\u5206\u6790\uff0c\u5b9a\u671f\u8fdb\u884c\u5185\u5b58\u4f18\u5316\uff0c\u4e86\u89e3\u548c\u5408\u7406\u4f7f\u7528\u5783\u573e\u56de\u6536\u673a\u5236\uff0c\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u7b56\u7565\uff0c\u90fd\u662f\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa\u7684\u6709\u6548\u65b9\u6cd5\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u786e\u4fddJavaScript\u9879\u76ee\u7684\u5185\u5b58\u4f7f\u7528\u4fdd\u6301\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\uff0c\u786e\u4fdd\u9879\u76ee\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. 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\/>\n\u53ef\u4ee5\u4f7f\u7528\u6d4f\u89c8\u5668\u7684\u5f00\u53d1\u8005\u5de5\u5177\u6765\u68c0\u6d4b\u5185\u5b58\u6ea2\u51fa\u3002\u5728Chrome\u6d4f\u89c8\u5668\u4e2d\uff0c\u53ef\u4ee5\u6253\u5f00\u5f00\u53d1\u8005\u5de5\u5177\u7684&quot;\u5185\u5b58&quot;\u9009\u9879\u5361\uff0c\u7136\u540e\u8fd0\u884c\u7a0b\u5e8f\u5e76\u89c2\u5bdf\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002\u5982\u679c\u5185\u5b58\u4f7f\u7528\u91cf\u4e0d\u65ad\u589e\u52a0\u800c\u6ca1\u6709\u91ca\u653e\uff0c\u5c31\u53ef\u80fd\u5b58\u5728\u5185\u5b58\u6ea2\u51fa\u7684\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u9879\u76ee\u4e2d\u7ba1\u7406\u5185\u5b58\u6ea2\u51fa\u7684\u95ee\u9898\uff0c\u6838\u5fc3\u65b9\u6cd5\u5305\u62ec\uff1a\u4f18\u5316\u6570\u636e\u7ed3\u6784\u3001\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3001\u4f7f\u7528\u5408\u9002\u7684\u7b97\u6cd5\u3001\u5b9a\u671f 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