{"id":206,"date":"2026-07-15T09:23:23","date_gmt":"2026-07-15T01:23:23","guid":{"rendered":"https:\/\/yykcj.com\/?p=206"},"modified":"2026-07-15T09:23:23","modified_gmt":"2026-07-15T01:23:23","slug":"%e5%89%8d%e7%ab%af%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%ef%bc%9acore-web-vitals-%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/yykcj.com\/?p=206","title":{"rendered":"\u524d\u7aef\u6027\u80fd\u4f18\u5316\uff1aCore Web Vitals \u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>Google \u7684 Core Web Vitals \u5df2\u6210\u4e3a\u8861\u91cf\u7f51\u9875\u7528\u6237\u4f53\u9a8c\u7684\u91cd\u8981\u6807\u51c6\uff0c\u76f4\u63a5\u5f71\u54cd\u641c\u7d22\u6392\u540d\u3002\u7136\u800c\uff0c\u8bb8\u591a\u5f00\u53d1\u8005\u5bf9\u5982\u4f55\u4f18\u5316\u8fd9\u4e9b\u6307\u6807\u611f\u5230\u56f0\u60d1\u3002\u672c\u6587\u5c06\u5e26\u4f60\u4ece\u7406\u8bba\u5230\u5b9e\u8df5\uff0c\u4e00\u6b65\u6b65\u4f18\u5316 LCP\u3001FID \u548c CLS\uff0c\u5e76\u63d0\u4f9b\u53ef\u590d\u7528\u7684\u4ee3\u7801\u7247\u6bb5\u3002<\/p>\n<h2>\u7406\u89e3 Core Web Vitals<\/h2>\n<p>Core Web Vitals \u5305\u542b\u4e09\u4e2a\u6838\u5fc3\u6307\u6807\uff1a<\/p>\n<ul>\n<li><strong>LCP (Largest Contentful Paint)<\/strong>: \u6700\u5927\u5185\u5bb9\u7ed8\u5236\uff0c\u8861\u91cf\u52a0\u8f7d\u6027\u80fd\u3002\u5e94\u5c0f\u4e8e 2.5 \u79d2\u3002<\/li>\n<li><strong>FID (First Input Delay)<\/strong>: \u9996\u6b21\u8f93\u5165\u5ef6\u8fdf\uff0c\u8861\u91cf\u4ea4\u4e92\u6027\u3002\u5e94\u5c0f\u4e8e 100 \u6beb\u79d2\u3002<\/li>\n<li><strong>CLS (Cumulative Layout Shift)<\/strong>: \u7d2f\u8ba1\u5e03\u5c40\u504f\u79fb\uff0c\u8861\u91cf\u89c6\u89c9\u7a33\u5b9a\u6027\u3002\u5e94\u5c0f\u4e8e 0.1\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u4f18\u5316\u6b65\u9aa4<\/h2>\n<h3>1. \u6d4b\u91cf\u5f53\u524d\u6027\u80fd<\/h3>\n<p>\u4f7f\u7528 Lighthouse \u6216 Web Vitals \u5e93\u83b7\u53d6\u57fa\u7ebf\u6570\u636e\u3002<\/p>\n<pre><code class=\"language-bash\">\nnpm install web-vitals\n<\/code><\/pre>\n<pre><code class=\"language-javascript\">\n\/\/ \u5728\u5165\u53e3\u6587\u4ef6 index.js \u4e2d\nimport { getLCP, getFID, getCLS } from &#x27;web-vitals&#x27;;\n\ngetLCP(console.log);\ngetFID(console.log);\ngetCLS(console.log);\n<\/code><\/pre>\n<h3>2. \u4f18\u5316 LCP<\/h3>\n<p>LCP \u901a\u5e38\u7531\u56fe\u7247\u3001\u89c6\u9891\u6216\u5927\u5757\u6587\u672c\u5f15\u8d77\u3002<\/p>\n<h4>2.1 \u4f18\u5316\u56fe\u7247<\/h4>\n<p>\u4f7f\u7528\u73b0\u4ee3\u683c\u5f0f\uff08WebP\/AVIF\uff09\u3001\u61d2\u52a0\u8f7d\u3001\u9884\u52a0\u8f7d\u5173\u952e\u56fe\u7247\u3002<\/p>\n<pre><code class=\"language-html\">\n&lt;!-- \u9884\u52a0\u8f7d\u9996\u5c4f LCP \u56fe\u7247 --&gt;\n&lt;link rel=&quot;preload&quot; as=&quot;image&quot; href=&quot;hero.webp&quot; type=&quot;image\/webp&quot; \/&gt;\n\n&lt;!-- \u61d2\u52a0\u8f7d\u5176\u4ed6\u56fe\u7247 --&gt;\n&lt;img src=&quot;placeholder.jpg&quot; data-src=&quot;real-image.jpg&quot; loading=&quot;lazy&quot; \/&gt;\n<\/code><\/pre>\n<h4>2.2 \u4f18\u5316\u670d\u52a1\u5668\u54cd\u5e94\u65f6\u95f4<\/h4>\n<p>\u4f7f\u7528 CDN\u3001\u542f\u7528\u538b\u7f29\u3001\u51cf\u5c11\u91cd\u5b9a\u5411\u3002<\/p>\n<pre><code class=\"language-nginx\">\n# Nginx \u914d\u7f6e\u793a\u4f8b\ngzip on;\ngzip_types text\/html text\/css application\/javascript image\/svg+xml;\n<\/code><\/pre>\n<h4>2.3 \u9884\u52a0\u8f7d\u5173\u952e\u8d44\u6e90<\/h4>\n<pre><code class=\"language-html\">\n&lt;link rel=&quot;preload&quot; as=&quot;font&quot; href=&quot;font.woff2&quot; crossorigin \/&gt;\n&lt;link rel=&quot;preload&quot; as=&quot;style&quot; href=&quot;critical.css&quot; \/&gt;\n<\/code><\/pre>\n<h3>3. \u4f18\u5316 FID<\/h3>\n<p>FID \u4e3b\u8981\u53d7 JavaScript \u6267\u884c\u65f6\u95f4\u5f71\u54cd\u3002<\/p>\n<h4>3.1 \u51cf\u5c11\u4e3b\u7ebf\u7a0b\u963b\u585e<\/h4>\n<ul>\n<li>\u62c6\u5206\u957f\u4efb\u52a1\uff1a\u4f7f\u7528 <code>requestIdleCallback<\/code> \u6216 <code>setTimeout<\/code> \u5206\u5272\u3002<\/li>\n<li>\u4ee3\u7801\u5206\u5272\uff1a\u6309\u9700\u52a0\u8f7d\u975e\u5173\u952e JS\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">\n\/\/ \u4f7f\u7528\u52a8\u6001 import \u5206\u5272\u4ee3\u7801\nbutton.addEventListener(&#x27;click&#x27;, async () =&gt; {\n  const module = await import(&#x27;.\/heavy-module.js&#x27;);\n  module.run();\n});\n<\/code><\/pre>\n<h4>3.2 \u4f18\u5316\u4e8b\u4ef6\u5904\u7406<\/h4>\n<p>\u4f7f\u7528\u9632\u6296\u548c\u8282\u6d41\u3002<\/p>\n<pre><code class=\"language-javascript\">\nfunction debounce(fn, delay) {\n  let timer;\n  return function(...args) {\n    clearTimeout(timer);\n    timer = setTimeout(() =&gt; fn.apply(this, args), delay);\n  };\n}\n\nwindow.addEventListener(&#x27;resize&#x27;, debounce(handleResize, 100));\n<\/code><\/pre>\n<h3>4. \u4f18\u5316 CLS<\/h3>\n<p>CLS \u7531\u52a8\u6001\u5185\u5bb9\u63d2\u5165\u5f15\u8d77\u3002<\/p>\n<h4>4.1 \u4e3a\u56fe\u7247\u548c\u89c6\u9891\u8bbe\u7f6e\u5c3a\u5bf8<\/h4>\n<pre><code class=\"language-html\">\n&lt;img src=&quot;image.jpg&quot; width=&quot;800&quot; height=&quot;600&quot; \/&gt;\n<\/code><\/pre>\n<h4>4.2 \u907f\u514d\u5728\u73b0\u6709\u5185\u5bb9\u4e0a\u65b9\u63d2\u5165\u5185\u5bb9<\/h4>\n<p>\u4f7f\u7528\u5360\u4f4d\u7b26\u6216\u9aa8\u67b6\u5c4f\u3002<\/p>\n<pre><code class=\"language-css\">\n.skeleton {\n  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);\n  background-size: 200% 100%;\n  animation: shimmer 1.5s infinite;\n}\n\n@keyframes shimmer {\n  0% { background-position: 200% 0; }\n  100% { background-position: -200% 0; }\n}\n<\/code><\/pre>\n<h4>4.3 \u4f7f\u7528 <code>transform<\/code> \u52a8\u753b\u4ee3\u66ff <code>top\/left<\/code><\/h4>\n<pre><code class=\"language-css\">\n\/* \u4e0d\u63a8\u8350 *\/\n.element { animation: slide 0.3s; }\n@keyframes slide {\n  from { left: -100px; }\n  to { left: 0; }\n}\n\n\/* \u63a8\u8350 *\/\n@keyframes slide {\n  from { transform: translateX(-100px); }\n  to { transform: translateX(0); }\n}\n<\/code><\/pre>\n<h3>5. \u76d1\u63a7\u4e0e\u6301\u7eed\u4f18\u5316<\/h3>\n<p>\u4f7f\u7528 Performance Observer \u6536\u96c6\u771f\u5b9e\u7528\u6237\u6570\u636e\u3002<\/p>\n<pre><code class=\"language-javascript\">\nconst observer = new PerformanceObserver((list) =&gt; {\n  for (const entry of list.getEntries()) {\n    if (entry.entryType === &#x27;largest-contentful-paint&#x27;) {\n      console.log(&#x27;LCP:&#x27;, entry.startTime);\n    }\n  }\n});\nobserver.observe({ type: &#x27;largest-contentful-paint&#x27;, buffered: true });\n<\/code><\/pre>\n<h2>\u5e38\u89c1\u8e29\u5751\u7ecf\u9a8c<\/h2>\n<p>\ud83d\udca1 <strong>\u6ce8\u610f<\/strong>\uff1a\u4f18\u5316\u65f6\u8981\u907f\u514d\u8fc7\u5ea6\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u9884\u52a0\u8f7d\u6240\u6709\u8d44\u6e90\u4f1a\u6d6a\u8d39\u5e26\u5bbd\uff0c\u5e94\u53ea\u9884\u52a0\u8f7d\u5173\u952e\u8d44\u6e90\u3002<\/p>\n<p>\ud83d\udca1 <strong>\u6ce8\u610f<\/strong>\uff1a\u56fe\u7247\u61d2\u52a0\u8f7d\u53ef\u80fd\u5bfc\u81f4 LCP \u5ef6\u8fdf\uff0c\u786e\u4fdd\u9996\u5c4f LCP \u56fe\u7247\u4e0d\u4f7f\u7528\u61d2\u52a0\u8f7d\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u672c\u6587\u7684\u5b9e\u6218\u6b65\u9aa4\uff0c\u4f60\u53ef\u4ee5\u6709\u6548\u63d0\u5347 Core Web Vitals \u5206\u6570\u3002\u5efa\u8bae\u4ece\u6d4b\u91cf\u5f00\u59cb\uff0c\u4f18\u5148\u4f18\u5316 LCP\uff0c\u7136\u540e\u4f9d\u6b21\u5904\u7406 FID \u548c CLS\u3002\u6301\u7eed\u76d1\u63a7\u771f\u5b9e\u7528\u6237\u6570\u636e\uff0c\u5f62\u6210\u4f18\u5316\u95ed\u73af\u3002<\/p>\n<h2>\u5ef6\u4f38\u9605\u8bfb<\/h2>\n<ul>\n<li><a href=\"https:\/\/web.dev\/vitals\/\">Web Vitals \u5b98\u65b9\u6587\u6863<\/a><\/li>\n<li><a href=\"https:\/\/developer.chrome.com\/docs\/lighthouse\/performance\/\">Lighthouse \u6027\u80fd\u8bc4\u5206<\/a><\/li>\n<li><a href=\"https:\/\/nextjs.org\/docs\/advanced-features\/measuring-performance\">Next.js \u4e2d\u7684\u6027\u80fd\u4f18\u5316<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u6df1\u5165\u8bb2\u89e3 Core Web Vitals \u7684\u6838\u5fc3\u6307\u6807\uff08LCP\u3001FID\u3001CLS\uff09\uff0c\u5e76\u63d0\u4f9b\u53ef\u843d\u5730\u7684\u4f18\u5316\u7b56\u7565\u4e0e\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u4e0e\u641c\u7d22\u5f15\u64ce\u6392\u540d\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4],"tags":[135,132,134,133,136,49],"class_list":["post-206","post","type-post","status-publish","format-standard","hentry","category-3","category-4","tag-cls","tag-core-web-vitals","tag-fid","tag-lcp","tag-136","tag-49"],"_links":{"self":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts\/206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=206"}],"version-history":[{"count":0,"href":"https:\/\/yykcj.com\/index.php?rest_route=\/wp\/v2\/posts\/206\/revisions"}],"wp:attachment":[{"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yykcj.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}