{"id":541,"date":"2025-12-06T16:06:01","date_gmt":"2025-12-06T08:06:01","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=541"},"modified":"2025-12-06T16:06:01","modified_gmt":"2025-12-06T08:06:01","slug":"%e4%bb%8e%e5%8a%a0%e8%bd%bd%e5%88%b0%e6%b8%b2%e6%9f%93%e7%9a%84%e5%89%8d%e7%ab%af%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%85%a8%e6%94%bb%e7%95%a5%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/12\/06\/%e4%bb%8e%e5%8a%a0%e8%bd%bd%e5%88%b0%e6%b8%b2%e6%9f%93%e7%9a%84%e5%89%8d%e7%ab%af%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%85%a8%e6%94%bb%e7%95%a5%e6%8c%87%e5%8d%97\/","title":{"rendered":"\u4ece\u52a0\u8f7d\u5230\u6e32\u67d3\u7684\u524d\u7aef\u6027\u80fd\u4f18\u5316\u5168\u653b\u7565\u6307\u5357"},"content":{"rendered":"\n<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4efd<strong>\u4ece\u52a0\u8f7d \u2192 \u89e3\u6790 \u2192 \u6267\u884c \u2192 \u6e32\u67d3 \u2192 \u4ea4\u4e92<\/strong>\u7684<strong>\u524d\u7aef\u6027\u80fd\u4f18\u5316\u5168\u653b\u7565\u6307\u5357\uff08\u6700\u65b0 2024 \u6807\u51c6\uff09<\/strong>\uff0c\u975e\u5e38\u5b8c\u6574\u3001\u53ef\u76f4\u63a5\u4f5c\u4e3a\u6280\u672f\u6587\u6863\u6216\u53d1\u5e03\u5230\u535a\u5ba2\/WordPress\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\ude80 \u524d\u7aef\u6027\u80fd\u4f18\u5316\u5168\u653b\u7565\uff08\u4ece\u52a0\u8f7d\u5230\u6e32\u67d3\uff09<\/h1>\n\n\n\n<p>\u6027\u80fd\u4f18\u5316\u53ef\u4ee5\u62c6\u89e3\u6210 5 \u4e2a\u9636\u6bb5\uff1a<br><strong>1. \u8d44\u6e90\u52a0\u8f7d\u4f18\u5316<\/strong><br><strong>2. \u6784\u5efa\u4e0e\u4ee3\u7801\u6267\u884c\u4f18\u5316<\/strong><br><strong>3. \u6e32\u67d3\u9636\u6bb5\u4f18\u5316\uff08\u6e32\u67d3\u6811\u3001\u5e03\u5c40\u3001\u7ed8\u5236\uff09<\/strong><br><strong>4. \u4ea4\u4e92\u6027\u80fd\u4f18\u5316\uff08FPS\u3001\u6d41\u7545\u5ea6\uff09<\/strong><br><strong>5. \u7f13\u5b58\u4e0e\u7f51\u7edc\u5c42\u4f18\u5316<\/strong><\/p>\n\n\n\n<p>\u4e0b\u9762\u6309\u201c\u6d4f\u89c8\u5668\u6e32\u67d3\u6d41\u6c34\u7ebf\u201d\u987a\u5e8f\u8bf4\u660e\uff0c\u5e76\u9644\u5e26\u6e05\u6670\u7684\u65b9\u6848\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd25 1. <strong>\u52a0\u8f7d\u9636\u6bb5\u4f18\u5316\uff08Load Time\uff09<\/strong><\/h1>\n\n\n\n<p>\u6d4f\u89c8\u5668\u6536\u5230 HTML \u540e\u8fdb\u5165\u7b2c\u4e00\u9636\u6bb5\uff1a <strong>\u4e0b\u8f7d\u8d44\u6e90 + \u9884\u89e3\u6790 + \u963b\u585e\u5904\u7406<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 1.1 \u51cf\u5c11 HTTP \u8bf7\u6c42\u6570\u91cf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u63d0\u5347\u624b\u6bb5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5408\u5e76 JS\/CSS\uff08\u6784\u5efa\u5de5\u5177\u81ea\u52a8\u5316\uff09<\/li>\n\n\n\n<li>\u4f7f\u7528\u96ea\u78a7\u56fe \/ \u56fe\u6807\u5b57\u4f53 \/ SVG sprite<\/li>\n\n\n\n<li>\u7ec4\u4ef6\u61d2\u52a0\u8f7d\u3001\u6309\u9700\u52a0\u8f7d<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u91cd\u70b9\u6307\u6807<\/h3>\n\n\n\n<p><strong>\u51cf\u5c11 Request \u6570\u91cf \u2192 \u964d\u4f4e TTFB\u3001TTI\u3001FCP<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 1.2 \u4f7f\u7528 HTTP\/2 \/ HTTP\/3<\/h2>\n\n\n\n<p>\u4f18\u52bf\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e76\u53d1\u8bf7\u6c42<\/li>\n\n\n\n<li>header \u538b\u7f29<\/li>\n\n\n\n<li>\u670d\u52a1\u5668\u63a8\u9001\uff08HTTP\/2 Push\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u52a0\u8f7d\u901f\u5ea6\u663e\u8457\u63d0\u5347<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 1.3 \u4f7f\u7528 CDN \u52a0\u901f\u9759\u6001\u8d44\u6e90<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f13\u5b58\u547d\u4e2d\u7387\u9ad8<\/li>\n\n\n\n<li>\u591a\u5730\u57df\u52a0\u901f<\/li>\n\n\n\n<li>\u8fb9\u7f18\u8282\u70b9\u63d0\u524d\u54cd\u5e94<\/li>\n<\/ul>\n\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u66f4\u4f4e\u7684\u65f6\u5ef6\u3001\u66f4\u5feb\u7684\u8d44\u6e90\u4e0b\u8f7d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 1.4 HTML preload \/ prefetch \/ dns-prefetch<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8d44\u6e90\u63d0\u524d\u52a0\u8f7d\uff1a<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;link rel=&quot;preload&quot; href=&quot;\/main.css&quot; as=&quot;style&quot;&gt;\n&amp;lt;link rel=&quot;preload&quot; href=&quot;\/app.js&quot; as=&quot;script&quot;&gt;\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u9884\u83b7\u53d6\u4e0b\u4e00\u9875\u8d44\u6e90\uff1a<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;link rel=&quot;prefetch&quot; href=&quot;\/next-page.js&quot;&gt;\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">DNS \u9884\u89e3\u6790\uff1a<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;link rel=&quot;dns-prefetch&quot; href=&quot;\/\/example.com&quot;&gt;\n\n<\/pre><\/div>\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u63d0\u5347\u9875\u9762\u9996\u5c4f\u4e0e\u8df3\u8f6c\u901f\u5ea6<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 1.5 \u5206\u79bb\u57fa\u7840\u5e93\u4e0e\u4e1a\u52a1\u4ee3\u7801<\/h2>\n\n\n\n<p>\u901a\u8fc7 CDN \u5f15\u5165 React\/Vue \u7b49\u57fa\u7840\u5e93\uff0c\u51cf\u5c11 bundle \u5927\u5c0f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd25 2. <strong>\u89e3\u6790\u6267\u884c\u9636\u6bb5\u4f18\u5316\uff08JavaScript \u6267\u884c\uff09<\/strong><\/h1>\n\n\n\n<p>\u6d4f\u89c8\u5668\u62ff\u5230\u8d44\u6e90\u540e\u5f00\u59cb<strong>\u89e3\u6790 HTML\u3001CSSOM\u3001\u6784\u5efa\u6e32\u67d3\u6811\u3001\u6267\u884c JS<\/strong>\u3002<\/p>\n\n\n\n<p>JS \u6267\u884c\u4f1a <strong>\u963b\u585e<\/strong> HTML \u89e3\u6790\uff0c\u56e0\u6b64\u91cd\u70b9\u662f\u51cf\u5c11\u963b\u585e\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 2.1 \u4f7f\u7528 <code>defer<\/code> \/ <code>async<\/code> \u52a0\u8f7d JS<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">defer\uff08\u63a8\u8350\uff09<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;script src=&quot;app.js&quot; defer&gt;&amp;lt;\/script&gt;\n\n<\/pre><\/div>\n\n\n<p>\u4e0d\u963b\u585e HTML\uff0c\u6309\u987a\u5e8f\u6267\u884c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">async<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;script src=&quot;app.js&quot; async&gt;&amp;lt;\/script&gt;\n\n<\/pre><\/div>\n\n\n<p>\u4e0d\u963b\u585e\uff0c\u4f46\u6267\u884c\u987a\u5e8f\u4e0d\u786e\u5b9a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 2.2 Tree Shaking + Dead Code Elimination<\/h2>\n\n\n\n<p>\u901a\u8fc7 Webpack \/ Rollup \/ Vite \u53bb\u6389\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u672a\u4f7f\u7528\u6a21\u5757<\/li>\n\n\n\n<li>\u672a\u5f15\u7528\u51fd\u6570<\/li>\n\n\n\n<li>\u5df2\u77e5\u5e38\u91cf\u6761\u4ef6\u5206\u652f<\/li>\n<\/ul>\n\n\n\n<p>\u53ef\u51cf\u5c11 30%~70% \u4ee3\u7801\u4f53\u79ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 2.3 Code Splitting\uff08\u6309\u9700\u52a0\u8f7d\uff09<\/h2>\n\n\n\n<p>\u793a\u4f8b\uff08Webpack\/Vite\uff09\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nimport(&quot;.\/chart&quot;).then(({ renderChart }) =&gt; renderChart());\n\n<\/pre><\/div>\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u975e\u9996\u5c4f\u8d44\u6e90\u4e0d\u963b\u585e\u9875\u9762<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 2.4 \u51cf\u5c11\u957f\u4efb\u52a1\uff08Long Tasks\uff09<\/h2>\n\n\n\n<p>\u6d4f\u89c8\u5668\u4e3b\u7ebf\u7a0b\u8d85\u8fc7 50ms \u7684\u4efb\u52a1\u4f1a\u5361\u987f\u3002<\/p>\n\n\n\n<p>\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u62c6\u5206\u4efb\u52a1\uff08\u4f7f\u7528 requestIdleCallback\uff09<\/li>\n\n\n\n<li>Web Worker \u505a\u8017\u65f6\u8ba1\u7b97<\/li>\n\n\n\n<li>\u4f7f\u7528\u865a\u62df\u6eda\u52a8\u51cf\u5c11 DOM \u64cd\u4f5c<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 2.5 \u4f7f\u7528 SSR \/ SSG \u52a0\u901f\u9996\u5c4f<\/h2>\n\n\n\n<p>\u50cf Next.js \/ Nuxt \u8fd9\u7c7b SSR \u6846\u67b6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9996\u5c4f\u76f4\u51fa HTML<\/li>\n\n\n\n<li>JS \u53ea\u505a hydration<\/li>\n<\/ul>\n\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u6700\u5927\u5316\u63d0\u5347 FCP\u3001LCP<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd25 3. <strong>\u6e32\u67d3\u9636\u6bb5\u4f18\u5316\uff08Rendering\uff09<\/strong><\/h1>\n\n\n\n<p>\u6d89\u53ca DOM\u3001CSSOM\u3001Render Tree\u3001Layout\u3001Paint\u3001Composite\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 3.1 \u907f\u514d\u5f3a\u5236\u540c\u6b65\u5e03\u5c40\uff08Reflow\uff09<\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u64cd\u4f5c\u4f1a\u5f3a\u5236 Layout\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nel.offsetHeight\nel.clientWidth\ngetComputedStyle(el)\nscrollTop\n\n<\/pre><\/div>\n\n\n<p>\u4f18\u5316\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u907f\u514d\u8bfb\u5199 DOM \u4ea4\u66ff<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>requestAnimationFrame<\/code><\/li>\n\n\n\n<li>\u63d0\u524d\u7f13\u5b58 DOM \u5c3a\u5bf8<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 3.2 \u51cf\u5c11\u56de\u6d41\uff08Reflow\uff09\u4e0e\u91cd\u7ed8\uff08Repaint\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u56de\u6d41\uff08\u6700\u8d35\uff09\u89e6\u53d1\u6761\u4ef6\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DOM \u51e0\u4f55\u53d8\u5316\uff08width, height, padding\uff09<\/li>\n\n\n\n<li>\u6539\u53d8\u5e03\u5c40\u65b9\u5f0f\uff08display\u3001position\uff09<\/li>\n\n\n\n<li>\u6eda\u52a8<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f18\u5316\u65b9\u5f0f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u79bb\u7ebf DOM\uff08documentFragment\uff09<\/li>\n\n\n\n<li>\u96c6\u4e2d\u6279\u91cf\u4fee\u6539\u6837\u5f0f\uff08class \u66ff\u6362\uff09<\/li>\n\n\n\n<li>\u4f7f\u7528 transform \u66ff\u4ee3\u5b9a\u4f4d\u52a8\u753b<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 3.3 \u4f7f\u7528 GPU \u52a0\u901f\uff08transform\u3001opacity\uff09<\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u5c5e\u6027\u4e0d\u4f1a\u89e6\u53d1 Layout\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>transform<\/li>\n\n\n\n<li>opacity<\/li>\n<\/ul>\n\n\n\n<p>\u7528\u4e8e\u52a8\u753b\u6700\u4f73\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n.box {\n  transition: transform 0.3s ease;\n}\n\n<\/pre><\/div>\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u4e0d\u4f1a\u89e6\u53d1\u91cd\u6392\u3001\u53ea\u89e6\u53d1\u5408\u6210\uff08Composite\uff09\uff0c\u66f4\u6d41\u7545<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 3.4 \u56fe\u7247\u4f18\u5316\uff08\u9996\u5c4f\u5173\u952e\uff09<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 WebP\/AVIF\uff08\u6bd4 JPG \u5c0f 30%~50%\uff09<\/li>\n\n\n\n<li>\u54cd\u5e94\u5f0f\u56fe\u7247\uff1a<code>srcset<\/code> <code>sizes<\/code><\/li>\n\n\n\n<li>\u61d2\u52a0\u8f7d\uff1a<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;img src=&quot;a.jpg&quot; loading=&quot;lazy&quot;&gt;\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\u9884\u52a0\u8f7d\u9996\u5c4f\u56fe\uff1a<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n&amp;lt;link rel=&quot;preload&quot; as=&quot;image&quot; href=&quot;\/banner.webp&quot;&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd25 4. <strong>\u4ea4\u4e92\u9636\u6bb5\u4f18\u5316\uff08\u6d41\u7545\u5ea6\uff09<\/strong><\/h1>\n\n\n\n<p>\u4f18\u5316\u6838\u5fc3\u662f\uff1a<br><strong>\u4fdd\u8bc1 60 FPS\uff08\u6bcf\u5e27 &lt; 16ms\uff09<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 4.1 \u9632\u6296\uff08debounce\uff09\u4e0e\u8282\u6d41\uff08throttle\uff09<\/h2>\n\n\n\n<p>\u5e38\u7528\u4e8e scroll\u3001resize\u3001input\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 4.2 Virtual List\uff08\u865a\u62df\u5217\u8868\uff09<\/h2>\n\n\n\n<p>\u5f53\u6709\u51e0\u5343\u6761\u5217\u8868\u65f6\uff0c\u53ea\u6e32\u67d3\u53ef\u89c1\u90e8\u5206\u5373\u53ef\u3002<\/p>\n\n\n\n<p>Vue React \u76f4\u63a5\u4f7f\u7528\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>vue-virtual-scroll-list<\/li>\n\n\n\n<li>react-window<\/li>\n\n\n\n<li>react-virtualized<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 4.3 \u4f7f\u7528 Web Worker \u5904\u7406\u5927\u8ba1\u7b97\u4efb\u52a1<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst worker = new Worker(&quot;calc.js&quot;);\nworker.postMessage(data);\nworker.onmessage = e =&gt; console.log(e.data);\n\n<\/pre><\/div>\n\n\n<p>\u4f7f\u4e3b\u7ebf\u7a0b\u6e32\u67d3\u4e0d\u5361\u987f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 4.4 \u4f7f\u7528 IntersectionObserver \u505a\u61d2\u52a0\u8f7d<\/h2>\n\n\n\n<p>\u66ff\u4ee3 scroll \u76d1\u542c\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst io = new IntersectionObserver(entries =&gt; {\n  entries.forEach(e =&gt; {\n    if (e.isIntersecting) e.target.src = e.target.dataset.src\n  })\n})\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd25 5. <strong>\u6d4f\u89c8\u5668\u7f13\u5b58\u4f18\u5316\uff08\u7f13\u5b58\u7b56\u7565\uff09<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7f13\u5b58\u7c7b\u578b\uff1a<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7f13\u5b58\u7c7b\u578b<\/th><th>\u4f18\u70b9<\/th><th>\u4f8b\u5b50<\/th><\/tr><\/thead><tbody><tr><td><strong>\u5f3a\u7f13\u5b58<\/strong>\uff08Expires\u3001Cache-Control\uff09<\/td><td>\u76f4\u63a5\u4ece\u7f13\u5b58\u8bfb\u53d6\uff0c\u4e0d\u53d1\u8bf7\u6c42<\/td><td>JS\u3001CSS\u3001\u56fe\u7247<\/td><\/tr><tr><td><strong>\u534f\u5546\u7f13\u5b58<\/strong>\uff08ETag\u3001Last-Modified\uff09<\/td><td>\u670d\u52a1\u7aef\u5224\u65ad\u662f\u5426\u53ef\u7528<\/td><td>HTML<\/td><\/tr><tr><td><strong>Service Worker \u7f13\u5b58<\/strong><\/td><td>\u53ef\u79bb\u7ebf\u3001\u53ef\u7b56\u7565\u63a7\u5236<\/td><td>PWA<\/td><\/tr><tr><td><strong>IndexedDB \u7f13\u5b58<\/strong><\/td><td>\u5927\u6570\u636e\u7f13\u5b58<\/td><td>JSON \u6570\u636e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc \u5f3a\u7f13\u5b58\uff08Cache-Control\uff09\u793a\u4f8b<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nCache-Control: max-age=31536000, immutable\n\n<\/pre><\/div>\n\n\n<p>\u9002\u7528\u4e8e\uff1a<br><strong>\u7248\u672c\u53f7\u6587\u4ef6\uff1aapp.8d9e.js<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc \u534f\u5546\u7f13\u5b58\uff08ETag\uff09<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nETag: &quot;abc123&quot;\n\n<\/pre><\/div>\n\n\n<p>\u6d4f\u89c8\u5668\u4e0b\u6b21\u5e26\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nIf-None-Match: &quot;abc123&quot;\n\n<\/pre><\/div>\n\n\n<p>\u63d0\u5347\uff1a<br><strong>\u907f\u514d\u91cd\u590d\u4f20\u8f93<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc Service Worker \u7f13\u5b58\uff08\u79bb\u7ebf\uff09<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nself.addEventListener(&#039;fetch&#039;, event =&gt; {\n  event.respondWith(\n    caches.match(event.request).then(res =&gt; res || fetch(event.request))\n  );\n});\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf81 \u6700\u7ec8\uff1a\u6027\u80fd\u4f18\u5316\u7684\u5b8c\u6574 Checklist\uff08\u53ef\u7528\u4e8e\u751f\u4ea7\uff09<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u2b50 \u52a0\u8f7d\u4f18\u5316<\/h3>\n\n\n\n<p>\u2714 \u6253\u5305\u538b\u7f29<br>\u2714 Tree Shaking<br>\u2714 CDN \u9759\u6001\u8d44\u6e90<br>\u2714 HTTP\/2\/3<br>\u2714 Preload \/ Prefetch<br>\u2714 \u8def\u7531\u61d2\u52a0\u8f7d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2b50 \u6267\u884c\u4f18\u5316<\/h3>\n\n\n\n<p>\u2714 JS defer<br>\u2714 Web Worker<br>\u2714 \u957f\u4efb\u52a1\u5207\u7247<br>\u2714 Code Splitting<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2b50 \u6e32\u67d3\u4f18\u5316<\/h3>\n\n\n\n<p>\u2714 transform\/opacity GPU \u52a8\u753b<br>\u2714 \u907f\u514d forced reflow<br>\u2714 \u4f18\u5316\u56fe\u7247\u5927\u5c0f<br>\u2714 Virtual DOM diff \u4f18\u5316<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2b50 \u4ea4\u4e92\u4f18\u5316<\/h3>\n\n\n\n<p>\u2714 \u8282\u6d41\u9632\u6296<br>\u2714 IntersectionObserver \u61d2\u52a0\u8f7d<br>\u2714 \u865a\u62df\u5217\u8868<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2b50 \u7f13\u5b58\u4f18\u5316<\/h3>\n\n\n\n<p>\u2714 Service Worker<br>\u2714 \u5f3a\u7f13\u5b58 + \u534f\u5546\u7f13\u5b58<br>\u2714 IndexedDB \u7f13\u5b58\u6570\u636e<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4efd\u4ece\u52a0\u8f7d \u2192 \u89e3\u6790 \u2192 \u6267\u884c \u2192 \u6e32\u67d3 \u2192 \u4ea4\u4e92\u7684\u524d\u7aef\u6027\u80fd\u4f18\u5316\u5168\u653b\u7565\u6307&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2025\/12\/06\/%e4%bb%8e%e5%8a%a0%e8%bd%bd%e5%88%b0%e6%b8%b2%e6%9f%93%e7%9a%84%e5%89%8d%e7%ab%af%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%85%a8%e6%94%bb%e7%95%a5%e6%8c%87%e5%8d%97\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-541","post","type-post","status-publish","format-standard","hentry","category-javascript"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=541"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/541\/revisions"}],"predecessor-version":[{"id":542,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/541\/revisions\/542"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}