百度皮肤.jpg
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
* {
padding: 0;
margin: 0;
}
body {
background: url(image/1.jpg) no-repeat;
}
.box {
height: 165px;
padding-top: 35px;
text-align: center;
background: rgba(255,255,255,0.3);
}
img {
cursor: pointer;
margin: 0 10px;
}
</style>
</head>
<body>
<div class="box">
</div>
<script>
//需求：点击图片，body的背景图修改。
//步骤：
//1.获取事件源
//2.绑定事件
//3.书写事件驱动程序
//1.获取事件源
var box = document.getElementsByTagName("div")[0];
//body的获取js内部帮我们优化完毕
var body = document.body;
var imgArr = box.children;
//2.绑定事件
for(var i=0;i<imgArr.length;i++){
imgArr[i].index = i;
imgArr[i].onclick = function () {
//3.书写事件驱动程序
//改body的背景
// body.style.backgroundImage = "url(image/"+(this.index+1)+".jpg)";
body.style.backgroundImage = "url("+this.src+")";
}
}
</script>
</body>
</html>
