未啊

Approaching Ah!

Posted on Edited on In , , ,

<script>
src
async: 异步脚本; 立即下载, 并不保证执行的先后顺序
defer: 延迟脚本; 立即下载, 延迟执行
type
charset
<noscript>

Posted on Edited on In , , ,

var oDiv=document.querySelector(“div | .className | #idName”);
document.querySelectorAll()
不兼容IE6-8

document.getElementById()
document.getElementsByClassName()
document.getElementsByTagName()
document.getElementsByName()

var oHtml=document.documentElement;
var oBody=document.body;

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