<!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>操作属性之修改样式属性</title>
<style>div {
width: 200px;
height: 200px;
background-color: pink;
}</style>
</head>
<body>
<div></div>
<script>// 1. 获取元素
var div = document.querySelector('div');
// 2. 注册事件 处理程序
div.onclick = function () {
// div.style里面的属性 采取
this.style.backgroundColor = 'purple';
this.style.width = '250px';
}</script>
</body>
</html>
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