{"id":42188,"date":"2024-10-03T03:17:09","date_gmt":"2024-10-02T19:17:09","guid":{"rendered":"https:\/\/server.hk\/cnblog\/42188\/"},"modified":"2024-10-03T03:17:09","modified_gmt":"2024-10-02T19:17:09","slug":"cdn%e5%85%a5%e9%96%80-cdn%e5%92%8c%e5%9c%96%e5%83%8f%e5%92%8c%e8%a6%96%e9%a0%bb%e7%9a%84%e6%87%b6%e5%8a%a0%e8%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/42188\/","title":{"rendered":"CDN\u5165\u9580 &#8211; CDN\u548c\u5716\u50cf\u548c\u8996\u983b\u7684\u61f6\u52a0\u8f09"},"content":{"rendered":"<h1 id=\"cdn%e5%85%a5%e9%96%80-cdn%e5%92%8c%e5%9c%96%e5%83%8f%e5%92%8c%e8%a6%96%e9%a0%bb%e7%9a%84%e6%87%b6%e5%8a%a0%e8%bc%89-eyVhXxdzRn\">CDN\u5165\u9580 &#8211; CDN\u548c\u5716\u50cf\u548c\u8996\u983b\u7684\u61f6\u52a0\u8f09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u7db2\u7ad9\u7684\u52a0\u8f09\u901f\u5ea6\u548c\u6027\u80fd\u5c0d\u65bc\u7528\u6236\u9ad4\u9a57\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u591a\u5a92\u9ad4\u5167\u5bb9\u7684\u666e\u53ca\uff0c\u7279\u5225\u662f\u5716\u50cf\u548c\u8996\u983b\uff0c\u7db2\u7ad9\u7684\u52a0\u8f09\u6642\u9593\u53ef\u80fd\u6703\u986f\u8457\u589e\u52a0\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u5167\u5bb9\u5206\u767c\u7db2\u7d61\uff08CDN\uff09\u548c\u61f6\u52a0\u8f09\u6280\u8853\u61c9\u904b\u800c\u751f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eCDN\u7684\u57fa\u672c\u6982\u5ff5\u4ee5\u53ca\u5982\u4f55\u5229\u7528\u61f6\u52a0\u8f09\u6280\u8853\u4f86\u512a\u5316\u5716\u50cf\u548c\u8996\u983b\u7684\u52a0\u8f09\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afcdn%ef%bc%9f-eyVhXxdzRn\">\u4ec0\u9ebc\u662fCDN\uff1f<\/h2>\n<p>\u5167\u5bb9\u5206\u767c\u7db2\u7d61\uff08CDN\uff09\u662f\u4e00\u7a2e\u5206\u4f48\u5f0f\u7684\u4f3a\u670d\u5668\u7cfb\u7d71\uff0c\u65e8\u5728\u901a\u904e\u5c07\u5167\u5bb9\u7de9\u5b58\u5230\u9760\u8fd1\u7528\u6236\u7684\u4f3a\u670d\u5668\u4e0a\u4f86\u63d0\u9ad8\u7db2\u7ad9\u7684\u52a0\u8f09\u901f\u5ea6\u3002CDN\u7684\u4e3b\u8981\u529f\u80fd\u662f\u6e1b\u5c11\u7528\u6236\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u8ddd\u96e2\uff0c\u5f9e\u800c\u964d\u4f4e\u5ef6\u9072\u548c\u63d0\u9ad8\u52a0\u8f09\u901f\u5ea6\u3002<\/p>\n<p>CDN\u7684\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u7576\u7528\u6236\u8acb\u6c42\u67d0\u500b\u7db2\u7ad9\u7684\u5167\u5bb9\u6642\uff0cCDN\u6703\u81ea\u52d5\u5c07\u8acb\u6c42\u91cd\u5b9a\u5411\u5230\u6700\u8fd1\u7684\u4f3a\u670d\u5668\u3002<\/li>\n<li>\u8a72\u4f3a\u670d\u5668\u6703\u63d0\u4f9b\u7de9\u5b58\u7684\u5167\u5bb9\uff0c\u5f9e\u800c\u52a0\u5feb\u52a0\u8f09\u901f\u5ea6\u3002<\/li>\n<li>\u5982\u679c\u8a72\u4f3a\u670d\u5668\u6c92\u6709\u6240\u9700\u7684\u5167\u5bb9\uff0c\u5247\u6703\u5f9e\u539f\u59cb\u4f3a\u670d\u5668\u7372\u53d6\u4e26\u7de9\u5b58\uff0c\u4ee5\u4fbf\u672a\u4f86\u7684\u8acb\u6c42\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%87%b6%e5%8a%a0%e8%bc%89%e6%8a%80%e8%a1%93-eyVhXxdzRn\">\u61f6\u52a0\u8f09\u6280\u8853<\/h2>\n<p>\u61f6\u52a0\u8f09\u662f\u4e00\u7a2e\u512a\u5316\u6280\u8853\uff0c\u65e8\u5728\u5ef6\u9072\u52a0\u8f09\u975e\u5fc5\u8981\u7684\u5167\u5bb9\uff0c\u76f4\u5230\u7528\u6236\u9700\u8981\u5b83\u5011\u70ba\u6b62\u3002\u9019\u5c0d\u65bc\u5716\u50cf\u548c\u8996\u983b\u7279\u5225\u6709\u6548\uff0c\u56e0\u70ba\u9019\u4e9b\u5a92\u9ad4\u6587\u4ef6\u901a\u5e38\u4f54\u7528\u5927\u91cf\u5e36\u5bec\u548c\u52a0\u8f09\u6642\u9593\u3002<\/p>\n<p>\u61f6\u52a0\u8f09\u7684\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u7576\u7528\u6236\u8a2a\u554f\u7db2\u7ad9\u6642\uff0c\u53ea\u6709\u53ef\u898b\u5340\u57df\u5167\u7684\u5716\u50cf\u548c\u8996\u983b\u6703\u7acb\u5373\u52a0\u8f09\u3002<\/li>\n<li>\u7576\u7528\u6236\u6efe\u52d5\u9801\u9762\u6642\uff0c\u96a8\u8457\u5167\u5bb9\u7684\u51fa\u73fe\uff0c\u61f6\u52a0\u8f09\u6703\u81ea\u52d5\u52a0\u8f09\u90a3\u4e9b\u5c1a\u672a\u986f\u793a\u7684\u5a92\u9ad4\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h3 id=\"%e6%87%b6%e5%8a%a0%e8%bc%89%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95-eyVhXxdzRn\">\u61f6\u52a0\u8f09\u7684\u5be6\u73fe\u65b9\u6cd5<\/h3>\n<p>\u61f6\u52a0\u8f09\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h4 id=\"1-%e4%bd%bf%e7%94%a8javascript-eyVhXxdzRn\">1. \u4f7f\u7528JavaScript<\/h4>\n<pre><code>\nwindow.addEventListener('scroll', function() {\n    const images = document.querySelectorAll('img[data-src]');\n    images.forEach(img =&gt; 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