版权声明：未经同意不得转载 https://blog.csdn.net/qq_42707446/article/details/84138207
<!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>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
body {
background: url("http://old.bz55.com/uploads/allimg/151222/139-151222110245.jpg")no-repeat;
}
#im {
width: 700px;
height: 200px;
margin: auto;
display: flex;
justify-content: space-around;
align-items: center;
}
img {
width: 220px;
height: 150px;
cursor: pointer;
}
</style>
</head>
<body>
<div id="im">
<img src="http://old.bz55.com/uploads/allimg/151222/139-151222110245.jpg" alt="">
<img src="https://attach.bbs.miui.com/forum/201311/17/151252iz9tvh9ttkl5fu4e.jpg" alt="">
<img src="http://pic.xeeok.com/uploads/20171231/201712311635021100/292705_001.jpg" alt="">
<script>
//定义一个对象获取其中的所有元素标签img
var imobj = document.getElementById("im").children;
//循环遍历img,给每一个img注册点击事件
for (var i = 0; i < imobj.length; i++) {
imobj[i].onclick = function () {
//body背景图片的url路径变成被点击的img
document.body.style.backgroundImage = " url(" + this.src + ")";
}
}
</script>
</div>
</body>
</html>