<!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="UTF-8" /> <title>更换网页背景的jquery代码(写入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;}/*红色*/ .black{background:#000;}/*黑色*/ .blue{background:#09F;}/*蓝色*/ .green{background:#093;}/*绿色*/ </style> <script type="text/javascript" src="http://ajax.useso.com/ajax/libs/jquery/1.7.2/jquery.min.js?ver=3.4.2"></script> <script type="text/javascript"> $(document).ready(function(){ //为了安全 google chrome 等浏览器是禁止本地文件写Cookie的即file:///F:/Lord%20community/lrtk/Untitled-2.html这样的以file开头的是不能写本地文件的 var cookieClass = getCookie('class');//读取需要缓存的对象。 $("body").attr("class",cookieClass);// $(".skin_list li").each(function(){ $(this).click(function(){ var className=$(this).attr("class");//保存当前选择的类名 $("body").attr("class",className,30);//把选中的类名给body function SetCookie(name,value,day)//两个参数,一个是cookie的名子,一个是值 { 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函数 { 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;">更换背景:</li></li><li class="red"></li><li class="black"></li><li class="blue"></li><li class="green"></li></ul></div> </body> </html>
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