<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=p, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.mask{
border: 1px solid #333;
100px;
height:20px;
background-color: #ffcccc;
}
</style>
</head>
<body>
<p><span class="te">我我哦我我</span></p>
<p><span class="te">我我哦我我</span></p>
<p><span class="te">我我哦我我</span></p>
<div class="mask">1222</div>
<button onclick="change()">changeColor</button>
</body>
<script>
//定义加载方法
function loadjscssfile(filename,filetype){
//判断js文件 if(filetype == "js"){
//创建script标签
var fileref = document.createElement('script');
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src",filename);
}else if(filetype == "css"){ //判断css文件
//创建link标签 var fileref = document.createElement('link');
fileref.setAttribute("rel","stylesheet");
fileref.setAttribute("type","text/css");
fileref.setAttribute("href",filename);
}
if(typeof fileref != "undefined"){
document.getElementsByTagName("head")[0].appendChild(fileref);
}
}
function change(){
loadjscssfile("static/test.css","css");
}
</script>
</html>