{"id":34140,"date":"2026-10-29T12:00:00","date_gmt":"2026-10-29T04:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=34140"},"modified":"2026-10-29T17:49:24","modified_gmt":"2026-10-29T09:49:24","slug":"inp-long-task-split","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/inp-long-task-split\/","title":{"rendered":"INP \u6307\u6807\u504f\u9ad8\u600e\u4e48\u964d\uff1a\u4e3b\u7ebf\u7a0b\u957f\u4efb\u52a1\u5b9a\u4f4d\u4e0e\u524d\u7aef\u811a\u672c\u62c6\u5206\u987a\u5e8f"},"content":{"rendered":"

\u4e3a\u4ec0\u4e48\u4f60\u7684\u7f51\u7ad9\u70b9\u4e00\u4e0b\u8981\u5361\u534a\u79d2<\/h2>\n

\"INP<\/p>\n

\u7528\u6237\u5728\u9875\u9762\u4e0a\u70b9\u51fb\u4e00\u4e2a\u6309\u94ae\uff0c\u9875\u9762\u8fc7\u4e86 400ms \u624d\u6709\u53cd\u5e94\u2014\u2014\u8fd9\u79cd\u4f53\u9a8c\u5728\u8c37\u6b4c\u6838\u5fc3\u7f51\u9875\u6307\u6807 Core Web Vitals \u91cc\u88ab\u91cf\u5316\u4e3a INP\uff08Interaction to Next Paint\uff0c\u4ea4\u4e92\u5230\u4e0b\u4e00\u6b21\u7ed8\u5236\u7684\u5ef6\u8fdf\uff09\uff0c\u5b83\u8861\u91cf\u7684\u662f\u4ece\u7528\u6237\u4ea4\u4e92\u5f00\u59cb\u5230\u5c4f\u5e55\u5448\u73b0\u4e0b\u4e00\u5e27\u4e4b\u95f4\u7684\u8017\u65f6\u3002\u4e3a\u4ec0\u4e48\u660e\u660e\u670d\u52a1\u5668\u5f88\u5feb\u3001\u56fe\u7247\u4e5f\u538b\u7f29\u4e86\uff0cINP \u8fd8\u662f\u5c45\u9ad8\u4e0d\u4e0b\uff1f\u56e0\u4e3a INP \u5361\u7684\u4e0d\u662f\u7f51\u7edc\uff0c\u800c\u662f\u6d4f\u89c8\u5668\u4e3b\u7ebf\u7a0b\uff1a\u5f53\u4e00\u6bb5 JavaScript \u4ee3\u7801\u8fde\u7eed\u5360\u7528\u4e3b\u7ebf\u7a0b\u8d85\u8fc7 50ms\uff0c\u7528\u6237\u5728\u8fd9\u6bb5\u65f6\u95f4\u91cc\u7684\u4efb\u4f55\u70b9\u51fb\u3001\u8f93\u5165\u90fd\u8981\u6392\u961f\u7b49\u5b83\u8dd1\u5b8c\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u8def\u5f84\u662f\u6e05\u6670\u7684\uff1a\u5148\u7528\u6d4f\u89c8\u5668\u6027\u80fd\u9762\u677f\u628a\u8d85\u8fc7 50ms \u7684\u957f\u4efb\u52a1\u4e00\u4e2a\u4e00\u4e2a\u627e\u51fa\u6765\uff0c\u518d\u6309\u7167”\u8c01\u6321\u4f4f\u4ea4\u4e92\u5148\u62c6\u8c01”\u7684\u987a\u5e8f\u62c6\u5206\u811a\u672c\u3002\u672c\u6587\u628a\u8fd9\u4e24\u6b65\u62c6\u6210\u53ef\u6267\u884c\u7684\u5b9a\u4f4d\u65b9\u6cd5\u548c\u62c6\u5206\u987a\u5e8f\uff0c\u5e2e\u52a9\u4f60\u628a INP \u4ece\u52a8\u8f84 400ms \u538b\u5230 200ms \u7684\u826f\u597d\u7ebf\u4ee5\u5185\u3002<\/p>\n

\u5148\u5b9a\u4f4d\uff1a\u628a\u8d85\u8fc7 50ms \u7684\u957f\u4efb\u52a1\u63ea\u51fa\u6765<\/h2>\n

\u964d\u4f4e INP \u7684\u7b2c\u4e00\u6b65\u4e0d\u662f\u6539\u4ee3\u7801\uff0c\u800c\u662f\u641e\u6e05\u695a\u4e3b\u7ebf\u7a0b\u5230\u5e95\u88ab\u8c01\u5360\u7740\u3002Chrome DevTools \u7684 Performance \u9762\u677f\u662f\u6700\u76f4\u63a5\u7684\u5b9a\u4f4d\u5de5\u5177\uff0c\u5177\u4f53\u64cd\u4f5c\u5206\u56db\u6b65\uff1a<\/p>\n

    \n
  1. \u6253\u5f00 DevTools\uff08F12\uff09\u5207\u5230 Performance \u9762\u677f\uff0c\u52fe\u9009 CPU 4x slowdown \u6a21\u62df\u4e2d\u7aef\u624b\u673a\uff0c\u70b9\u5f55\u5236\u540e\u5728\u9875\u9762\u4e0a\u91cd\u590d\u90a3\u4e9b”\u611f\u89c9\u5361”\u7684\u4ea4\u4e92\uff08\u70b9\u6309\u94ae\u3001\u5f00\u83dc\u5355\u3001\u63d0\u4ea4\u8868\u5355\uff09\uff0c\u5f55 10 \u79d2\u5de6\u53f3\u505c\u6b62<\/li>\n
  2. \u5728\u4e3b\u7ebf\u7a0b\u706b\u7130\u56fe\u4e2d\u627e\u9876\u90e8\u6807\u7ea2\u7684\u4efb\u52a1\u6761\u2014\u2014\u7ea2\u8272\u4ee3\u8868\u957f\u4efb\u52a1\uff08\u8fde\u7eed\u5360\u7528\u4e3b\u7ebf\u7a0b\u8d85\u8fc7 50ms \u7684\u811a\u672c\u6267\u884c\u5757\uff09\uff0c\u628a\u9f20\u6807\u60ac\u4e0a\u53bb\u80fd\u770b\u5230\u603b\u8017\u65f6\uff0c\u5e38\u89c1\u7684\u4f1a\u770b\u5230 200-800ms \u7684\u5927\u5757<\/li>\n
  3. \u70b9\u5f00\u6700\u957f\u7684\u90a3\u4e2a\u4efb\u52a1\uff0c\u770b\u4e0b\u65b9 Bottom-Up \u89c6\u56fe\u6309 Self Time \u6392\u5e8f\uff0c\u901a\u5e38\u80fd\u5b9a\u4f4d\u5230\u5177\u4f53\u7684\u51fd\u6570\uff1a\u7b2c\u4e09\u65b9\u7edf\u8ba1\u811a\u672c\u7684\u4e8b\u4ef6\u76d1\u542c\u3001\u5e7f\u544a\u4ee3\u7801\u7684 DOM \u626b\u63cf\u3001\u6216\u8005\u81ea\u5df1\u5199\u7684\u5168\u91cf\u5217\u8868\u6e32\u67d3<\/li>\n
  4. \u7ed3\u5408 Web Vitals \u6269\u5c55\u6216 web-vitals<\/code> JS \u5e93\u5728\u771f\u5b9e\u7528\u6237\u4fa7\u91c7\u96c6 INP \u6570\u636e\uff0c\u786e\u8ba4\u5b9e\u9a8c\u5ba4\u5b9a\u4f4d\u7684\u957f\u4efb\u52a1\u548c\u771f\u5b9e\u4ea4\u4e92\u6162\u7684\u573a\u666f\u5bf9\u5f97\u4e0a\uff0c\u907f\u514d\u4f18\u5316\u9519\u65b9\u5411<\/li>\n<\/ol>\n

    \u5b9a\u4f4d\u9636\u6bb5\u6709\u4e00\u4e2a\u5bb9\u6613\u8e29\u7684\u5751\uff1a\u53ea\u770b\u52a0\u8f7d\u9636\u6bb5\u7684\u5f55\u5236\u3002INP \u7edf\u8ba1\u7684\u662f\u6574\u4e2a\u9875\u9762\u751f\u547d\u5468\u671f\u5185\u4ea4\u4e92\u7684\u5ef6\u8fdf\uff0c\u5f88\u591a\u7ad9\u70b9\u7684\u957f\u4efb\u52a1\u51fa\u73b0\u5728\u52a0\u8f7d\u5b8c\u6210\u4e4b\u540e\u2014\u2014\u6bd4\u5982\u8f6e\u64ad\u56fe\u7684\u5b9a\u65f6\u5668\u3001\u6eda\u52a8\u76d1\u542c\u91cc\u7684\u91cd\u8ba1\u7b97\u3002\u6240\u4ee5\u5f55\u5236\u65f6\u8981\u8986\u76d6”\u52a0\u8f7d\u5b8c\u6210\u540e\u7ee7\u7eed\u64cd\u4f5c\u9875\u9762”\u7684\u573a\u666f\u3002\u53e6\u5916\u6ce8\u610f Long Tasks API\uff08\u6d4f\u89c8\u5668\u63d0\u4f9b\u7684\u957f\u4efb\u52a1\u4e0a\u62a5\u63a5\u53e3\uff09\u53ef\u4ee5\u5728\u751f\u4ea7\u73af\u5883\u76f4\u63a5\u6536\u96c6\u8d85 50ms \u7684\u4efb\u52a1\uff0c\u914d\u5408 PerformanceObserver \u51e0\u884c\u4ee3\u7801\u5c31\u80fd\u628a\u7ebf\u4e0a\u771f\u5b9e\u7684\u957f\u4efb\u52a1\u51fd\u6570\u540d\u4e0a\u62a5\u5230\u65e5\u5fd7\uff0c\u6bd4\u5355\u7eaf\u9760\u672c\u5730\u590d\u73b0\u66f4\u5168\u9762\u3002<\/p>\n

    \u6838\u5fc3\u539f\u5219\uff1a\u5148\u8ba9\u4ea4\u4e92\u8def\u5f84\u4e0a\u7684\u4ee3\u7801\u8dd1\u5f97\u52a8<\/h2>\n

    \"\u811a\u672c\u62c6\u5206\u4f18\u5148\u7ea7\u793a\u610f\u56fe\uff1a\u4ea4\u4e92\u5904\u7406\u6700\u5148\u6267\u884c\uff0c\u91cd\u8ba1\u7b97\u4f9d\u6b21\u5ef6\u540e\"<\/p>\n

    \u627e\u5230\u957f\u4efb\u52a1\u4e4b\u540e\uff0c\u4e0d\u8981\u6309”\u54ea\u4e2a\u6587\u4ef6\u6700\u5927\u5148\u6539\u54ea\u4e2a”\u6765\u62c6\u3002\u62c6\u5206\u987a\u5e8f\u51b3\u5b9a\u4e86\u6295\u5165\u4ea7\u51fa\u6bd4\uff1a\u540c\u6837\u780d\u6389 100ms \u7684\u811a\u672c\u91cf\uff0c\u4ece\u4ea4\u4e92\u5904\u7406\u8def\u5f84\u4e0a\u780d\uff0cINP \u76f4\u63a5\u53d7\u76ca\uff1b\u4ece\u9996\u5c4f\u6e32\u67d3\u8def\u5f84\u4e0a\u780d\uff0c\u53d7\u76ca\u7684\u662f LCP\uff08\u6700\u5927\u5185\u5bb9\u7ed8\u5236\uff09\u800c\u4e0d\u662f INP\u3002\u6211\u4eec\u5efa\u8bae\u6309\u4e0b\u9762\u4e09\u4e2a\u4f18\u5148\u7ea7\u6392\u5e8f\uff1a<\/p>\n

      \n
    1. \u7b2c\u4e00\u4f18\u5148\uff1a\u4ea4\u4e92\u5904\u7406\u51fd\u6570<\/strong>\u3002\u70b9\u51fb\u3001\u8f93\u5165\u3001\u89e6\u6478\u4e8b\u4ef6\u91cc\u540c\u6b65\u6267\u884c\u7684\u5927\u5757\u903b\u8f91\u6700\u5148\u62c6\u2014\u2014\u6bd4\u5982\u641c\u7d22\u6846 input \u4e8b\u4ef6\u91cc\u540c\u6b65\u8fc7\u6ee4 1000 \u6761\u6570\u636e\u7684\u4ee3\u7801\uff0c\u6539\u6210 requestAnimationFrame<\/code> \u6216 setTimeout(\u2026, 0)<\/code> \u628a\u8ba1\u7b97\u632a\u5230\u7ed8\u5236\u4e4b\u540e\uff0c\u8f93\u5165\u6846\u7acb\u5373\u56de\u663e\uff0c\u8fc7\u6ee4\u7ed3\u679c\u4e0b\u4e00\u5e27\u518d\u6e32\u67d3\uff0cINP \u4ece 500ms \u76f4\u63a5\u6389\u5230 100ms \u7ea7\u522b<\/li>\n
    2. \u7b2c\u4e8c\u4f18\u5148\uff1a\u4ea4\u4e92\u89e6\u53d1\u524d\u5c31\u4f4d\u7684\u5927\u811a\u672c<\/strong>\u3002\u7b2c\u4e09\u65b9\u7edf\u8ba1\u3001\u804a\u5929\u6302\u4ef6\u3001A\/B \u6d4b\u8bd5\u811a\u672c\u867d\u7136\u4e0d\u5728\u4e8b\u4ef6\u51fd\u6570\u91cc\uff0c\u4f46\u5b83\u4eec\u7684\u521d\u59cb\u5316\u548c\u4e8b\u4ef6\u76d1\u542c\u7ecf\u5e38\u548c\u7528\u6237\u70b9\u51fb\u62a2\u540c\u4e00\u4e2a\u4e3b\u7ebf\u7a0b\uff0c\u7528 defer<\/code> \u6216\u52a8\u6001\u52a0\u8f7d\u628a\u8fd9\u4e9b\u811a\u672c\u63a8\u8fdf\u5230 requestIdleCallback<\/code>\uff08\u6d4f\u89c8\u5668\u7a7a\u95f2\u65f6\u6267\u884c\u7684\u56de\u8c03\uff09\u91cc\u521d\u59cb\u5316\uff0c\u80fd\u663e\u8457\u51cf\u5c11\u70b9\u51fb\u88ab\u6392\u961f\u7b49\u5f85\u7684\u6982\u7387<\/li>\n
    3. \u7b2c\u4e09\u4f18\u5148\uff1a\u4e0e\u4ea4\u4e92\u65e0\u5173\u7684\u91cd\u8ba1\u7b97<\/strong>\u3002\u5217\u8868\u5168\u91cf\u6e32\u67d3\u3001\u5927 JSON \u89e3\u6790\u8fd9\u7c7b\u4efb\u52a1\u672c\u8eab\u4e0d\u6162\u7740\u8c01\uff0c\u4f46\u4e00\u65e6\u548c\u70b9\u51fb\u649e\u8f66\u5c31\u662f\u51e0\u767e\u6beb\u79d2\uff0c\u7528 Web Worker\uff08\u5728\u540e\u53f0\u7ebf\u7a0b\u8fd0\u884c\u811a\u672c\u7684\u6d4f\u89c8\u5668\u80fd\u529b\uff09\u632a\u51fa\u4e3b\u7ebf\u7a0b\uff0c\u6216\u7528\u5206\u6279\u6e32\u67d3\u6bcf\u6b21\u53ea\u5904\u7406 50 \u6761<\/li>\n<\/ol>\n

      \u4e00\u4e2a\u771f\u5b9e\u7684\u5bf9\u6bd4\u6848\u4f8b\uff1a\u67d0\u5916\u8d38\u7ad9\u70b9\u7684\u4ea7\u54c1\u5217\u8868\u9875 INP \u662f 420ms\uff0c\u6027\u80fd\u9762\u677f\u663e\u793a\u70b9\u51fb”\u7b5b\u9009”\u6309\u94ae\u7684\u4e8b\u4ef6\u51fd\u6570\u91cc\u540c\u6b65\u6267\u884c\u4e86\u6392\u5e8f\u52a0\u6e32\u67d3\u5171 350ms\u3002\u628a\u6392\u5e8f\u7ed3\u679c\u7f13\u5b58\u3001\u6e32\u67d3\u6539\u6210\u6bcf\u5e27 50 \u6761\u5206\u6279\u63d2\u5165\u540e\uff0c\u4e8b\u4ef6\u51fd\u6570\u8017\u65f6\u964d\u5230 60ms\uff0c\u540c\u4e00\u9875\u9762\u4e00\u5468\u540e\u7684\u771f\u5b9e\u7528\u6237 INP P75 \u964d\u5230 180ms\u3002\u6574\u4e2a\u8fc7\u7a0b\u6ca1\u6362\u670d\u52a1\u5668\u3001\u6ca1\u6539 CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u2014\u2014\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48 INP \u4f18\u5316\u8981\u5728\u524d\u7aef\u811a\u672c\u5c42\u9762\u505a\uff0c\u800c\u4e0d\u662f\u5148\u6000\u7591\u4e3b\u673a\u6027\u80fd\u3002<\/p>\n

      \u4e24\u4e2a\u5bb9\u6613\u53cd\u590d\u590d\u53d1\u7684\u573a\u666f\uff1a\u7b2c\u4e09\u65b9\u811a\u672c\u4e0e\u6846\u67b6\u6c34\u5408<\/h2>\n

      \u6309\u4f18\u5148\u7ea7\u62c6\u5b8c\u4e00\u8f6e\u4e4b\u540e\uff0c\u591a\u6570\u7ad9\u70b9 INP \u80fd\u7acb\u523b\u6539\u5584\uff0c\u4f46\u6709\u4e24\u7c7b\u95ee\u9898\u7279\u522b\u5bb9\u6613\u5728\u51e0\u5468\u540e\u590d\u53d1\uff0c\u503c\u5f97\u5355\u72ec\u8bbe\u9632\u3002<\/p>\n

      \u573a\u666f\u4e00\uff1a\u7b2c\u4e09\u65b9\u811a\u672c\u56de\u5f52<\/strong>\u3002\u5e02\u573a\u90e8\u95e8\u65b0\u63a5\u7684\u7edf\u8ba1\u5de5\u5177\u3001\u5ba2\u670d\u7cfb\u7edf\u3001\u5e7f\u544a\u6295\u653e\u4ee3\u7801\uff0c\u51e0\u4e4e\u6bcf\u4e2a\u90fd\u4f1a\u5f80\u9875\u9762\u91cc\u585e\u540c\u6b65\u811a\u672c\u3002\u5efa\u8bae\u505a\u4e24\u4ef6\u4e8b\uff1a\u4e00\u662f\u6240\u6709\u7b2c\u4e09\u65b9\u811a\u672c\u7edf\u4e00\u8d70”\u6807\u7b7e\u7ba1\u7406\u5668 + \u5ef6\u8fdf\u52a0\u8f7d”\u7684\u901a\u9053\uff0c\u7981\u6b62\u4e1a\u52a1\u65b9\u76f4\u63a5\u5f80\u4e3b\u9898\u91cc\u8d34 <script><\/code>\uff1b\u4e8c\u662f\u6bcf\u6708\u7528 Performance \u9762\u677f\u62bd\u67e5\u4e00\u6b21\u6838\u5fc3\u9875\u9762\uff0c\u53d1\u73b0\u65b0\u7684\u7ea2\u8272\u957f\u4efb\u52a1\u5c31\u8ffd\u67e5\u662f\u54ea\u4e2a\u7b2c\u4e09\u65b9\u5f15\u5165\u7684\u3002\u5b9e\u6d4b\u4e2d\uff0c\u79fb\u9664\u4e00\u4e2a\u540c\u6b65\u52a0\u8f7d\u7684\u5ba2\u670d\u6302\u4ef6\u5c31\u80fd\u8ba9\u4e2d\u7b49\u590d\u6742\u9875\u9762\u7684 INP P75 \u4ece 260ms \u964d\u5230 190ms \u5de6\u53f3\u3002<\/p>\n

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      \"INP<\/p>\n

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      \u603b\u7ed3\u4e0e\u884c\u52a8\u5efa\u8bae<\/h2>\n

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