<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>更換網(wǎng)頁背景的jquery代碼（寫入cookie）</title>
<style type="text/css">
body,p,ul{margin:0;padding:0;}
ul{float:right;height:40px;margin-top:20px;margin-right:20px;}
ul li{list-style-type:none;float:left;width:20px;height:20px;margin-left:10px;cursor:pointer;}
.skin{height:40px;position:fixed;background:#fff;border-bottom:solid 1px #cccc;top:0;left:0;width:100%;}
.red{background:#F06;}/*紅色*/
.black{background:#000;}/*黑色*/
.blue{background:#09F;}/*藍色*/
.green{background:#093;}/*綠色*/
</style>
<script type="text/javascript" src="http://www.visa158.com/ajax/libs/jquery/1/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
//為了安全 google chrome 等瀏覽器是禁止本地文件寫Cookie的即file:///F:/Lord%20community/lrtk/Untitled-2.html這樣的以file開頭的是不能寫本地文件的
var cookieClass = getCookie('class');//讀取需要緩存的對象。
$("body").attr("class",cookieClass);//
$(".skin_list li").each(function(){
$(this).click(function(){
var className=$(this).attr("class");//保存當前選擇的類名
$("body").attr("class",className,30);//把選中的類名給body
function SetCookie(name,value,day)//兩個參數(shù)，一個是cookie的名子，一個是值
{
var exp = new Date(); //new Date("December 31, 9998");
exp.setTime(exp.getTime() + day*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
SetCookie("class",className,30);
})
});
});
function getCookie(name)//取cookies函數(shù)
{
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
</script>
</head>
<body>
<div class="skin"><ul class="skin_list"><li style="width:100px;text-align:right;">更換背景：</li></li><li class="red"></li><li class="black"></li><li class="blue"></li><li class="green"></li></ul></div>
<br /><br /><br />
</body>
</html>
