网页加载速度优化2先加载css，然后再加载js文件。_html/css_WEB-ITnose
网页加载时，是按从上到下，从左到右的顺序加载的。所以一定要先加载css文件（不要让用户看到一个杂乱无章的页面），最后再加载js文件，<br />js一般都是处理功能的，所以不需要提前加载。先给用户观感，再给用户上手体验。<br /><br /><!DOCTYPE html><br /><html lang="en"><br /><head><br /> <meta charset="UTF-8"><br /> <title>Title</title><br /> <!--先加载css --><br /> <link rel="stylesheet" href="style.css"><br /></head><br /><body><br /><!--然后加载网页内容 --><br /><h1 id="this-is-a-demo-html">this is a demo html </h1><br /><br /><!--最后加载js文件--><br /><script src="index.js"></script><br /></body><br /></html>
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