JavaScript动态添加css样式和script标签
[动态添加css样式]
<html>
<head>
<script type="text/javascript">
window.onload=function(){
var head=document.getElementsByTagName('head')[0]; //获取到head元素
var link=document.createElement('link'); //创建link元素节点，也就是link标签
link.rel="stylesheet"; //为link标签添加rel属性
link.href="basic.css"; //为link标签添加href属性 ， 属性值是css外链样式表的路径
head.appendChild(link); //将link元素节点添加到head元素子节点下
}
</script>
</head>
<body>
<div id="div1">测试</div>
</body>
</html>[动态添加script标签]
原理同上
<html>
<head>
<script type="text/javascript">
window.onload=function(){
var head=document.getElementsByTagName('head')[0]; //获取到head元素
var script=document.createElement('script'); //创建script标签
script.type="text/javascript"; //为script标签添加type属性
script.src="basic.js"; //为script标签添加scr属性，属性值为js路径
head.appendChild('script'); //将script标签添加到head的子节点下
}
</script>
</head>
<body>
<div id="div1">测试</div>
</body>
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