视频
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>点击 DIV 换色</title>
<link crossorigin="anonymous" href="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/css/bootstrap.min.css"
rel="stylesheet">
<style>
.item {
width: 100px;
height: 50px;
border: solid 1px rgb(42, 156, 156);
float: left;
margin-right: 10px;
}
</style>
</head>
<body>
<div class="container">
<h2 class="page-header">点击切换颜色</h2>
<div class="item"></div>
<div class="item"></div>
<div class="item"></div>
</div>
<script>
//获取div元素对象
let items = document.getElementsByClassName('item');
//遍历并绑定事件
for(let i = 0;i<items.length;i++){
items[i].onclick = function(){
//修改当前元素的背景颜色
// this.style.background = 'pink';
items[i].style.background = 'pink';
}
}
</script>
</body>
</html>
