点击HTML元素无法改变样式，样式是用一个函数打包的，事件监听无法调用函数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<link rel="stylesheet" href="04.css">
<style type="text/css">
.test{
width:80px;
height:80px;
background:red;
margin-left:5px;
float:left;
text-align:center;
line-height:80px;
}
</style>
<script type="text/javascript" rel="script">
function code(){
this.style.background="yellow";
this.style.fontSize="1.5em";
};
window.onload=function(){
var a=document.getElementsByClassName("test");
for(var i=0;i<a.length;i++)
a[i].addEventListener("click",code);
};
};
</script>
</head>
<body>
<div class="test">word</div>
<div class="test">word</div>
<div class="test">word</div>
<div class="test">word</div>
</body>
</html>
