Javascript实现页面背景颜色的改变
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<button style="background:red">red</button>
<button style="background:green">green</button>
<button style="background:blue">blue</button>
<button style="background:aqua">aqua</button>
<button style="background:pink">pink</button>
<script type="text/javascript">
var node=document.getElementsByTagName(‘button‘);
for(var i=0;i<node.length;i++){
node[i].onclick=function(){
document.documentElement.style.background=this.style.background;
}
}
</script>
</body>
</html>
//背景图片的改变
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<button style="background:url(‘1.jpg‘)">背景1</button>
<button style="background:url(‘2.jpg‘)">背景2</button>
<button style="background:url(‘3.jpg‘)">背景3</button>
<script type="text/javascript">
var node=document.getElementsByTagName(‘button‘);
for(var i=0;i<node.length;i++){
node[i].onclick=function(){
document.documentElement.style.background=this.style.background;
}
}
</script>
</body>
</html>
//附用到的背景图3张
原文：http://my.oschina.net/dongdong11019/blog/499273