{"id":156497,"date":"2024-05-08T12:12:47","date_gmt":"2024-05-08T04:12:47","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/156497.html"},"modified":"2024-05-08T12:12:52","modified_gmt":"2024-05-08T04:12:52","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e8%a7%a3%e9%87%8a%e5%9e%8b%e8%af%ad%e8%a8%80%ef%bc%88%e7%89%b9%e5%88%ab%e6%98%af-javascript%ef%bc%89%e7%9a%84%e9%80%9f%e5%ba%a6%e5%be%88%e6%85%a2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/156497.html","title":{"rendered":"\u4e3a\u4ec0\u4e48\u89e3\u91ca\u578b\u8bed\u8a00\uff08\u7279\u522b\u662f Javascript\uff09\u7684\u901f\u5ea6\u5f88\u6162"},"content":{"rendered":"

\"\u4e3a\u4ec0\u4e48\u89e3\u91ca\u578b\u8bed\u8a00\uff08\u7279\u522b\u662f<\/p>\n

\u89e3\u91ca\u578b\u8bed\u8a00\u5982JavaScript\u7684\u901f\u5ea6\u8f83\u6162\u7684\u539f\u56e0\u4e3b\u8981\u5305\u62ec\u8fd0\u884c\u65f6\u89e3\u91ca\u6267\u884c<\/strong>\u3001\u52a8\u6001\u7c7b\u578b\u7cfb\u7edf<\/strong>\u3001\u81ea\u52a8\u5185\u5b58\u7ba1\u7406<\/strong>\u3001\u4f18\u5316\u7a0b\u5ea6<\/strong>\u7b49\u56e0\u7d20\u3002\u52a8\u6001\u7c7b\u578b\u7cfb\u7edf<\/strong>\u662f\u5176\u8fd0\u884c\u901f\u5ea6\u8f83\u6162\u7684\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\u3002\u5728\u52a8\u6001\u7c7b\u578b\u7cfb\u7edf\u4e2d\uff0c\u53d8\u91cf\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u6539\u53d8\u5176\u7c7b\u578b\uff0c\u56e0\u6b64\u89e3\u91ca\u5668\u4e0d\u80fd\u5728\u7f16\u8bd1\u9636\u6bb5\u5bf9\u7a0b\u5e8f\u8fdb\u884c\u6df1\u5165\u4f18\u5316\uff0c\u6bd4\u5982\u63d0\u524d\u5206\u914d\u56fa\u5b9a\u5185\u5b58\u5927\u5c0f\u6216\u8005\u76f4\u63a5\u66ff\u6362\u4e3a\u673a\u5668\u7801\u3002\u8fd9\u5c31\u5bfc\u81f4\u4e86\u5728\u6267\u884c\u671f\u95f4\u5fc5\u987b\u5bf9\u6bcf\u4e2a\u64cd\u4f5c\u8fdb\u884c\u7c7b\u578b\u68c0\u67e5\u53ca\u89e3\u91ca\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u989d\u5916\u7684\u8ba1\u7b97\u8d1f\u62c5\u548c\u6267\u884c\u65f6\u95f4\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u8fd0\u884c\u65f6\u89e3\u91ca\u6267\u884c<\/h3>\n<\/p>\n

\u89e3\u91ca\u578b\u8bed\u8a00<\/strong>\u5728\u7a0b\u5e8f\u6267\u884c\u65f6\u9700\u8981\u4e00\u4e2a\u89e3\u91ca\u5668\u5b9e\u65f6\u5c06\u4ee3\u7801\u7ffb\u8bd1\u6210\u673a\u5668\u80fd\u591f\u6267\u884c\u7684\u6307\u4ee4\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u663e\u8457\u589e\u52a0\u4e86\u6267\u884c\u65f6\u95f4\uff0c\u56e0\u4e3a\u6bcf\u6b21\u8fd0\u884c\u4ee3\u7801\u65f6\uff0c\u89e3\u91ca\u5668\u90fd\u9700\u8981\u8bfb\u53d6\u3001\u5206\u6790\u5e76\u6267\u884c\u3002\u8fd9\u4e0e\u7f16\u8bd1\u578b\u8bed\u8a00\u4e0d\u540c\uff0c\u7f16\u8bd1\u578b\u8bed\u8a00\u5728\u8fd0\u884c\u7a0b\u5e8f\u4e4b\u524d\uff0c\u5c31\u5df2\u7ecf\u88ab\u8f6c\u6362\u6210\u673a\u5668\u7801\uff0c\u53ef\u4ee5\u76f4\u63a5\u7531\u8ba1\u7b97\u673a\u7684CPU\u6267\u884c\u3002<\/p>\n<\/p>\n

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    \n
  • \u8bfb\u53d6\u6e90\u4ee3\u7801\uff1a\u89e3\u91ca\u5668\u5fc5\u987b\u9010\u884c\u6216\u9010\u5757\u8bfb\u5165\u4ee3\u7801\uff0c\u8fd9\u4e00\u6b65\u5c31\u4ecb\u5165\u4e86I\/O\u8bfb\u53d6\u64cd\u4f5c\uff0c\u968f\u4e4b\u800c\u6765\u7684\u5ef6\u8fdf\u662f\u4e0d\u53ef\u907f\u514d\u7684\u3002<\/li>\n
  • \u8bed\u6cd5\u5206\u6790\uff1a\u5bf9\u4ee3\u7801\u8fdb\u884c\u8bed\u6cd5\u6811\u6784\u5efa\uff0c\u8fd9\u4e00\u6b65\u9aa4\u9700\u8981\u5904\u7406\u8bf8\u5982\u4fdd\u7559\u5b57\u3001\u53d8\u91cf\u540d\u7b49\u5404\u79cd\u8bed\u6cd5\u5143\u7d20\u4ee5\u786e\u5b9a\u5b83\u4eec\u7684\u8bed\u4e49\u5173\u7cfb\u3002<\/li>\n
  • \u6267\u884c\uff1a\u89e3\u91ca\u5668\u4f1a\u6839\u636e\u8bed\u6cd5\u6811\u548c\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u6765\u6267\u884c\u6307\u5b9a\u7684\u6307\u4ee4\u3002\u7531\u4e8e\u5728\u6267\u884c\u524d\u8fd8\u8981\u8fdb\u884c\u7c7b\u578b\u68c0\u67e5\u548c\u5176\u4ed6\u5b89\u5168\u6027\u68c0\u67e5\uff0c\u8fdb\u4e00\u6b65\u589e\u52a0\u4e86\u8fd0\u884c\u6210\u672c\u3002<\/li>\n<\/ul>\n

    \u4e8c\u3001\u52a8\u6001\u7c7b\u578b\u7cfb\u7edf<\/h3>\n<\/p>\n

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      \n
    • \u7c7b\u578b\u68c0\u67e5\uff1a\u6bcf\u4e2a\u8fd0\u7b97\u7b26\u6216\u51fd\u6570\u5728\u64cd\u4f5c\u524d\uff0c\u90fd\u9700\u8981\u68c0\u67e5\u53c2\u4e0e\u64cd\u4f5c\u7684\u53d8\u91cf\u7c7b\u578b\u662f\u5426\u6b63\u786e\u3002<\/li>\n
    • \u7c7b\u578b\u8f6c\u6362\uff1a\u5982\u679c\u9047\u5230\u4e0d\u5339\u914d\u7684\u7c7b\u578b\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\uff0c\u8fd9\u662f\u4e00\u4e2a\u8ba1\u7b97\u5bc6\u96c6\u578b\u7684\u8fc7\u7a0b\u3002<\/li>\n<\/ul>\n

      \u4e09\u3001\u81ea\u52a8\u5185\u5b58\u7ba1\u7406<\/h3>\n<\/p>\n

      \u81ea\u52a8\u5185\u5b58\u7ba1\u7406\uff0c\u901a\u5e38\u6307\u5783\u573e\u6536\u96c6\uff08Garbage Collection, GC\uff09\uff0c\u5176\u7528\u4ee5\u81ea\u52a8\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u5783\u573e\u6536\u96c6\u5668\u7684\u8fd0\u884c\u5bf9\u4e8e\u89e3\u91ca\u578b\u8bed\u8a00\u7684\u6267\u884c\u901f\u5ea6\u4f1a\u6709\u8f83\u5927\u5f71\u54cd\uff0c\u5c24\u5176\u662f\u5728\u8fde\u7eed\u6267\u884c\u5927\u91cf\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58\u7684\u7a0b\u5e8f\u4e2d\u3002<\/p>\n<\/p>\n

      \u5783\u573e\u6536\u96c6\u7684\u5f71\u54cd\uff1a<\/p>\n<\/p>\n

        \n
      • \u5ef6\u8fdf\u95ee\u9898\uff1aGC\u8fd0\u884c\u65f6\uff0c\u53ef\u80fd\u4f1a\u6682\u505c\u7a0b\u5e8f\u7684\u5176\u5b83\u90e8\u5206\uff0c\u5e76\u82b1\u8d39\u65f6\u95f4\u68c0\u67e5\u54ea\u4e9b\u5185\u5b58\u53ef\u4ee5\u88ab\u5b89\u5168\u91ca\u653e\u3002\u8fd9\u4e2a\u201c\u505c\u6b62\u4e16\u754c\u201d\uff08stop-the-world\uff09\u7684\u73b0\u8c61\u4f1a\u5f15\u5165\u5ef6\u8fdf\u3002<\/li>\n
      • \u5185\u5b58\u788e\u7247\uff1a\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u5e94\u7528\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u788e\u7247\uff0c\u8fd9\u5f71\u54cd\u4e86\u5185\u5b58\u5206\u914d\u7684\u6548\u7387\uff0c\u4ece\u800c\u5f71\u54cd\u901f\u5ea6\u3002<\/li>\n<\/ul>\n

        \u56db\u3001\u4f18\u5316\u7a0b\u5ea6<\/h3>\n<\/p>\n

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        \u4f18\u5316\u673a\u4f1a\u7684\u9650\u5236\u5bfc\u81f4\u7684\u95ee\u9898\u5305\u62ec\uff1a<\/p>\n<\/p>\n

          \n
        • \u4e0d\u8db3\u7684\u4ee3\u7801\u4f18\u5316\uff1a\u4ee3\u7801\u5728\u6267\u884c\u524d\u6ca1\u6709\u5b8c\u5168\u4f18\u5316\uff0c\u53ef\u80fd\u4f1a\u6267\u884c\u4e00\u4e9b\u5197\u4f59\u7684\u6216\u4e0d\u5fc5\u8981\u7684\u64cd\u4f5c\u3002<\/li>\n
        • JIT\u9650\u5236\uff1a\u867d\u7136\u4e00\u4e9b\u89e3\u91ca\u578b\u8bed\u8a00\uff08\u5982JavaScript\uff09\u5f15\u5165\u4e86\u5373\u65f6\u7f16\u8bd1\uff08JIT\uff09\u6280\u672f\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u8fd9\u79cd\u4f18\u5316\u53d7\u9650\u4e8e\u8fd0\u884c\u65f6\u4fe1\u606f\uff0c\u5f80\u5f80\u4e0d\u5982\u7f16\u8bd1\u578b\u8bed\u8a00\u5f7b\u5e95\u3002<\/li>\n<\/ul>\n

          \u4e94\u3001\u8bed\u8a00\u8bbe\u8ba1\u54f2\u5b66\u548c\u751f\u6001\u7cfb\u7edf<\/h3>\n<\/p>\n

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          \u8bed\u8a00\u7279\u6027\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\uff1a<\/p>\n<\/p>\n

            \n
          • \u7b80\u5316\u7684\u9519\u8bef\u5904\u7406\uff1a\u89e3\u91ca\u578b\u8bed\u8a00\u5e38\u6709\u7684\u81ea\u6211\u7ea0\u9519\u673a\u5236\u5728\u4e00\u5b9a\u573a\u5408\u4f1a\u589e\u52a0\u8fd0\u884c\u65f6\u5f00\u9500\u3002<\/li>\n
          • \u529f\u80fd\u6027\u7279\u6027\uff1a\u4f8b\u5982\u95ed\u5305\u3001\u9ad8\u9636\u51fd\u6570\u7b49\uff0c\u867d\u7136\u63d0\u9ad8\u4e86\u62bd\u8c61\u5c42\u6b21\uff0c\u5374\u4e5f\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u635f\u8017\uff0c\u5c24\u5176\u662f\u5728\u6ca1\u6709\u7cbe\u7ec6\u4f18\u5316\u7684\u60c5\u51b5\u4e0b\u3002<\/li>\n<\/ul>\n

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            \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

            1. \u4e3a\u4ec0\u4e48\u89e3\u91ca\u578b\u8bed\u8a00\uff08\u7279\u522b\u662f JavaScript\uff09\u5728\u6267\u884c\u901f\u5ea6\u4e0a\u76f8\u5bf9\u8f83\u6162\uff1f<\/strong><\/p>\n

            \u89e3\u91ca\u578b\u8bed\u8a00\u7684\u6267\u884c\u901f\u5ea6\u76f8\u5bf9\u8f83\u6162\u662f\u7531\u4e8e\u5b83\u4eec\u7684\u5de5\u4f5c\u539f\u7406\u51b3\u5b9a\u7684\u3002\u4e0e\u7f16\u8bd1\u578b\u8bed\u8a00\u76f8\u6bd4\uff0c\u89e3\u91ca\u578b\u8bed\u8a00\u9700\u8981\u5728\u8fd0\u884c\u65f6\u8fdb\u884c\u89e3\u91ca\u548c\u6267\u884c\uff0c\u8fd9\u4f1a\u4ea7\u751f\u4e00\u4e9b\u989d\u5916\u7684\u5f00\u9500\u3002\u5728 JavaScript \u4e2d\uff0c\u5f53\u4ee3\u7801\u88ab\u6267\u884c\u65f6\uff0c\u89e3\u91ca\u5668\u9700\u8981\u9010\u884c\u89e3\u91ca\u4ee3\u7801\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u8ba1\u7b97\u673a\u80fd\u591f\u7406\u89e3\u7684\u6307\u4ee4\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u9700\u8981\u6d88\u8017\u5927\u91cf\u7684\u65f6\u95f4\u548c\u8d44\u6e90\u3002<\/p>\n

            \u53e6\u5916\uff0cJavaScript \u662f\u4e00\u95e8\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u8fd9\u610f\u5473\u7740\u53d8\u91cf\u7684\u7c7b\u578b\u662f\u5728\u4ee3\u7801\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u786e\u5b9a\u7684\u3002\u8fd9\u4f7f\u5f97\u89e3\u91ca\u5668\u5728\u6267\u884c\u4ee3\u7801\u65f6\u9700\u8981\u8fdb\u884c\u66f4\u591a\u7684\u7c7b\u578b\u68c0\u67e5\u548c\u8f6c\u6362\uff0c\u4ece\u800c\u5bfc\u81f4\u6267\u884c\u901f\u5ea6\u7684\u4e0b\u964d\u3002<\/p>\n

            2. \u89e3\u91ca\u578b\u8bed\u8a00\u4e3a\u4ec0\u4e48\u5728\u6027\u80fd\u65b9\u9762\u6bd4\u4e0d\u4e0a\u7f16\u8bd1\u578b\u8bed\u8a00\uff1f<\/strong><\/p>\n

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