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jquery基础知识---2018年4月8日
Nic的博客
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jquery的引入方式:可以选择本地文件,也可以使用cdn在线版本,国内建议使用baidu静态资源库,访问速度快

$(document).ready()使用方式:

html页面生成分为二步: 

1. 生成DOM树: 告诉浏览器html文件中有多少元素以及他们之间的关系

2. 加载外部资源: 例如图像,外部文件等

简写:$().ready()


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