{"id":3199,"date":"2024-11-10T16:23:57","date_gmt":"2024-11-10T08:23:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3199\/"},"modified":"2024-11-10T16:23:57","modified_gmt":"2024-11-10T08:23:57","slug":"js%e4%bb%a3%e7%a0%81%e5%a6%82%e4%bd%95%e8%bf%90%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3199\/","title":{"rendered":"js\u4ee3\u7801\u5982\u4f55\u8fd0\u884c"},"content":{"rendered":"

\n javascript \u4ee3\u7801\u5728\u89e3\u91ca\u5668\u4e2d\u9010\u884c\u6267\u884c\uff0c\u4f9d\u6b21\u521b\u5efa\u6267\u884c\u4e0a\u4e0b\u6587\u3001\u58f0\u660e\u53d8\u91cf\u548c\u51fd\u6570\u3001\u89e3\u6790\u548c\u6267\u884c\u8bed\u53e5\u3001\u5904\u7406\u4e8b\u4ef6\u3001\u66f4\u65b0 dom\u3002\u73b0\u4ee3 javascript \u5f15\u64ce\u4f7f\u7528 jit \u6280\u672f\u4f18\u5316\u6027\u80fd\u3002\n<\/p><\/blockquote>\n

\"js\u4ee3\u7801\u5982\u4f55\u8fd0\u884c\u63d2\u56fe\"<\/p>\n

JS \u4ee3\u7801\u5982\u4f55\u8fd0\u884c\uff1f<\/strong><\/p>\n

JavaScript\uff08JS\uff09\u662f\u4e00\u79cd\u89e3\u91ca\u578b\u8bed\u8a00\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5728\u8fd0\u884c\u65f6\u88ab\u9010\u884c\u89e3\u91ca\uff0c\u800c\u4e0d\u662f\u50cf\u7f16\u8bd1\u578b\u8bed\u8a00\u90a3\u6837\u88ab\u4e00\u6b21\u6027\u7f16\u8bd1\u4e3a\u673a\u5668\u4ee3\u7801\u3002\u4ee5\u4e0b\u662f JS \u4ee3\u7801\u8fd0\u884c\u7684\u8fc7\u7a0b\uff1a<\/p>\n

    \n
  1. \n

    \u89e3\u91ca\u5668\u6267\u884c\u4ee3\u7801\uff1a<\/strong><\/p>\n

      \n
    • JS \u4ee3\u7801\u7531 JavaScript \u5f15\u64ce\uff08\u4f8b\u5982\uff0cChrome \u4e2d\u7684 V8\uff09\u89e3\u91ca\u3002<\/li>\n
    • \u89e3\u91ca\u5668\u9010\u884c\u8bfb\u53d6\u4ee3\u7801\u5e76\u6267\u884c\u6bcf\u4e2a\u8bed\u53e5\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n

      \u521b\u5efa\u6267\u884c\u4e0a\u4e0b\u6587\uff1a<\/strong><\/p>\n

        \n
      • \u5f53\u6267\u884c\u4ee3\u7801\u65f6\uff0c\u4f1a\u521b\u5efa\u4e00\u4e2a\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u5b83\u5305\u542b\u5f53\u524d\u7684\u53d8\u91cf\u3001\u51fd\u6570\u548c\u6267\u884c\u72b6\u6001\u3002<\/li>\n
      • \u6bcf\u5f53\u4ee3\u7801\u8fdb\u5165\u65b0\u8303\u56f4\uff08\u4f8b\u5982\uff0c\u51fd\u6570\uff09\u65f6\uff0c\u5c31\u4f1a\u521b\u5efa\u65b0\u7684\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u9000\u51fa\u8303\u56f4\u65f6\u9500\u6bc1\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n

        \u53d8\u91cf\u548c\u51fd\u6570\u58f0\u660e\uff1a<\/strong><\/p>\n

          \n
        • \u4ee3\u7801\u4e2d\u7684\u53d8\u91cf\u548c\u51fd\u6570\u5728\u6267\u884c\u65f6\u58f0\u660e\u3002<\/li>\n
        • \u53d8\u91cf\u5b58\u50a8\u503c\uff0c\u800c\u51fd\u6570\u5305\u542b\u8981\u6267\u884c\u7684\u4ee3\u7801\u5757\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n

          \u89e3\u6790\u548c\u6267\u884c\u8bed\u53e5\uff1a<\/strong><\/p>\n

            \n
          • \u89e3\u91ca\u5668\u89e3\u6790\u6bcf\u4e2a\u8bed\u53e5\u5e76\u6267\u884c\u9002\u5f53\u7684\u64cd\u4f5c\u3002<\/li>\n
          • \u8fd9\u4e9b\u64cd\u4f5c\u5305\u62ec\u8d4b\u503c\u3001\u51fd\u6570\u8c03\u7528\u3001\u6761\u4ef6\u8bed\u53e5\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \n

            \u5904\u7406\u4e8b\u4ef6\uff1a<\/strong><\/p>\n

              \n
            • JS \u4ee3\u7801\u53ef\u4ee5\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u6216\u73af\u5883\u4e8b\u4ef6\uff0c\u4f8b\u5982\u6216\u8ba1\u65f6\u5668\u5230\u671f\u3002<\/li>\n
            • \u5f53\u53d1\u751f\u4e8b\u4ef6\u65f6\uff0c\u4f1a\u8c03\u7528\u76f8\u5e94\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u51fd\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \n

              \u66f4\u65b0 DOM\uff1a<\/strong><\/p>\n

                \n
              • \u5728 Web \u5f00\u53d1\u4e2d\uff0cJS \u4ee3\u7801\u901a\u5e38\u7528\u6765\u66f4\u65b0\u7f51\u9875\u7684 DOM\uff08\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff09\uff0c\u4ece\u800c\u6539\u53d8\u5b83\u7684\u5916\u89c2\u6216\u529f\u80fd\u3002<\/li>\n
              • JS \u53ef\u4ee5\u8bbf\u95ee DOM \u5e76\u64cd\u4f5c\u5143\u7d20\u3001\u5c5e\u6027\u548c\u6837\u5f0f\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \n

                \u5373\u65f6\u7f16\u8bd1 (JIT)\uff1a<\/strong><\/p>\n

                  \n
                • \u73b0\u4ee3 JavaScript \u5f15\u64ce\u4f7f\u7528 JIT\uff08\u5373\u65f6\u7f16\u8bd1\uff09\u4f18\u5316\u6280\u672f\u3002<\/li>\n
                • JIT \u5c06\u7ecf\u5e38\u6267\u884c\u7684\u4ee3\u7801\u6bb5\u7f16\u8bd1\u4e3a\u66f4\u5feb\u7684\u673a\u5668\u4ee3\u7801\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                  \u4ee5\u4e0a\u5c31\u662fjs\u4ee3\u7801\u5982\u4f55\u8fd0\u884c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

                  javascript \u4ee3\u7801\u5728\u89e3\u91ca\u5668\u4e2d\u9010\u884c\u6267\u884c\uff0c\u4f9d\u6b21\u521b\u5efa\u6267\u884c\u4e0a\u4e0b\u6587\u3001\u58f0\u660e\u53d8\u91cf\u548c\u51fd\u6570\u3001\u89e3\u6790\u548c\u6267\u884c\u8bed\u53e5\u3001\u5904\u7406\u4e8b\u4ef6\u3001\u66f4\u65b0 dom\u3002\u73b0\u4ee3 javascript \u5f15\u64ce\u4f7f\u7528 jit \u6280\u672f\u4f18\u5316\u6027\u80fd\u3002 JS \u4ee3\u7801\u5982\u4f55\u8fd0\u884c\uff1f JavaScript\uff08JS\uff09\u662f\u4e00\u79cd\u89e3\u91ca\u578b\u8bed\u8a00\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5728\u8fd0\u884c\u65f6\u88ab\u9010\u884c\u89e3\u91ca\uff0c\u800c\u4e0d\u662f\u50cf\u7f16\u8bd1\u578b\u8bed\u8a00\u90a3\u6837\u88ab\u4e00\u6b21\u6027\u7f16\u8bd1\u4e3a\u673a\u5668\u4ee3\u7801\u3002\u4ee5\u4e0b\u662f JS \u4ee3\u7801\u8fd0\u884c\u7684\u8fc7\u7a0b\uff1a \u89e3\u91ca\u5668\u6267\u884c\u4ee3\u7801\uff1a JS \u4ee3\u7801\u7531 JavaScript \u5f15\u64ce\uff08\u4f8b\u5982\uff0cChrome \u4e2d\u7684 V8\uff09\u89e3\u91ca\u3002 \u89e3\u91ca\u5668\u9010\u884c\u8bfb\u53d6\u4ee3\u7801\u5e76\u6267\u884c\u6bcf\u4e2a\u8bed\u53e5\u3002 \u521b\u5efa\u6267\u884c\u4e0a\u4e0b\u6587\uff1a \u5f53\u6267\u884c\u4ee3\u7801\u65f6\uff0c\u4f1a\u521b\u5efa\u4e00\u4e2a\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u5b83\u5305\u542b\u5f53\u524d\u7684\u53d8\u91cf\u3001\u51fd\u6570\u548c\u6267\u884c\u72b6\u6001\u3002 \u6bcf\u5f53\u4ee3\u7801\u8fdb\u5165\u65b0\u8303\u56f4\uff08\u4f8b\u5982\uff0c\u51fd\u6570\uff09\u65f6\uff0c\u5c31\u4f1a\u521b\u5efa\u65b0\u7684\u6267\u884c\u4e0a\u4e0b\u6587\uff0c\u9000\u51fa\u8303\u56f4\u65f6\u9500\u6bc1\u3002 \u53d8\u91cf\u548c\u51fd\u6570\u58f0\u660e\uff1a \u4ee3\u7801\u4e2d\u7684\u53d8\u91cf\u548c\u51fd\u6570\u5728\u6267\u884c\u65f6\u58f0\u660e\u3002 \u53d8\u91cf\u5b58\u50a8\u503c\uff0c\u800c\u51fd\u6570\u5305\u542b\u8981\u6267\u884c\u7684\u4ee3\u7801\u5757\u3002 \u89e3\u6790\u548c\u6267\u884c\u8bed\u53e5\uff1a \u89e3\u91ca\u5668\u89e3\u6790\u6bcf\u4e2a\u8bed\u53e5\u5e76\u6267\u884c\u9002\u5f53\u7684\u64cd\u4f5c\u3002 \u8fd9\u4e9b\u64cd\u4f5c\u5305\u62ec\u8d4b\u503c\u3001\u51fd\u6570\u8c03\u7528\u3001\u6761\u4ef6\u8bed\u53e5\u7b49\u3002 \u5904\u7406\u4e8b\u4ef6\uff1a JS \u4ee3\u7801\u53ef\u4ee5\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u6216\u73af\u5883\u4e8b\u4ef6\uff0c\u4f8b\u5982\u6216\u8ba1\u65f6\u5668\u5230\u671f\u3002 \u5f53\u53d1\u751f\u4e8b\u4ef6\u65f6\uff0c\u4f1a\u8c03\u7528\u76f8\u5e94\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u51fd\u6570\u3002 \u66f4\u65b0 DOM\uff1a \u5728 Web \u5f00\u53d1\u4e2d\uff0cJS \u4ee3\u7801\u901a\u5e38\u7528\u6765\u66f4\u65b0\u7f51\u9875\u7684 DOM\uff08\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff09\uff0c\u4ece\u800c\u6539\u53d8\u5b83\u7684\u5916\u89c2\u6216\u529f\u80fd\u3002 JS \u53ef\u4ee5\u8bbf\u95ee DOM \u5e76\u64cd\u4f5c\u5143\u7d20\u3001\u5c5e\u6027\u548c\u6837\u5f0f\u3002 \u5373\u65f6\u7f16\u8bd1 (JIT)\uff1a \u73b0\u4ee3 JavaScript \u5f15\u64ce\u4f7f\u7528 JIT\uff08\u5373\u65f6\u7f16\u8bd1\uff09\u4f18\u5316\u6280\u672f\u3002 JIT \u5c06\u7ecf\u5e38\u6267\u884c\u7684\u4ee3\u7801\u6bb5\u7f16\u8bd1\u4e3a\u66f4\u5feb\u7684\u673a\u5668\u4ee3\u7801\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u3002 \u4ee5\u4e0a\u5c31\u662fjs\u4ee3\u7801\u5982\u4f55\u8fd0\u884c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3199","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3199"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3199\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}