高性能web建站规则(外部js和css通常更好一些)_html/css_WEB-ITnose
对于js和css,通常的做法有两种,一种将js和css直接嵌入到页面中,称为内联,另外一种就是通过src和link进行外部导入,称为外置。那么,哪一种更好一些呢?通常情况下外置更好一些,为什么呢?
- 用户往往从首页打开以后,会继续跳转到其余页面。比如说,从csdn首页到博客,再到极客头条,那么,假如打开首页时,外部的js和css被缓存起来了,接下来的请求中,公用的js和css就不会再从服务器上获取,内联的方式是没有办法缓存的。
- 假如说你网站的用户有很大的比重只访问首页,那么内联就会减少http请求,相对的加载速度就会更快。
- 但从大部分网站的功能上看,用户访问多个后续页面的几率要大于只访问首页,所以外置的倾向就会大一些。

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