jquery改变背景颜色
<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").toggle(function(){
$("body").css("background-color","green");},
function(){
$("body").css("background-color","red");},
function(){
$("body").css("background-color","yellow");}
);
});
</script>
</head>
<body>
<button>请点击这里，来切换不同的背景颜色</button>
</body>
</html>
原文：http://www.cnblogs.com/gerry/p/7091575.html