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<!DOCTYPE HTML>
<html lang="zh">
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
<meta name="applicable-device" content="pc,mobile"/>
<meta name="renderer" content="webkit"/>
<meta name="keywords" content=""/>
<meta name="description" content=""/>
<title>cookie与封装</title>
</head>
<body>
<script src="http://s0.ifengimg.com/static/js/jquery-1.7.2.min_c4de8813.js"></script>
<script>
var cookieUtil={
set:function(name,value,expires,path,domain,secure){//设置cookie
var cookieName=encodeURIComponent(name)+‘=‘+encodeURIComponent(value);
if(expires instanceof Date){
cookieName+= ‘;expires=‘+expires;
}
if(path){
cookieName+= ‘;path=‘+path;
}
if(domain){
cookieName+= ‘;domain=‘+domain;
}
if(secure){
cookieName+= ‘;secure‘;
}
document.cookie=cookieName;
},
setDate:function(day){//设置过期时间
var date=null;
if(typeof day ==‘number‘ && day>0){
date=new Date();
date.setDate(date.getDate()+day);
}else{
throw new Error(‘你输入的天数不合法，请输入大于0的数字‘);
}
return date;
},
get:function(name){//获取cookie
var cookieName=encodeURIComponent(name)+‘=‘,
cookieStart,
cookieValue;
cookieStart=document.cookie.indexOf(cookieName);
if(cookieStart>-1){
var cookieEnd=document.cookie.indexOf(‘;‘,cookieStart);
if(cookieEnd == -1){
cookieEnd=document.cookie.length;
}
cookieValue=decodeURIComponent(document.cookie.substring(cookieStart+cookieName.length,cookieEnd));
}
return cookieValue;
},
unSet:function(name,path,domain,secure){//删除cookie
cookieUtil.set(name,‘‘,new Date(0),path,domain,secure);
}
};
//测试设置cookie
/*cookieUtil.set(‘use‘,‘xiangcy‘,cookieUtil.setDate(1));
cookieUtil.set(‘url‘,‘ycvo.com‘,cookieUtil.setDate(28));
cookieUtil.set(‘email‘,‘xiangcy@163.com‘);*/
//测试删除cookie
/*
cookieUtil.unSet(‘use‘);
cookieUtil.unSet(‘url‘);
cookieUtil.unSet(‘email‘);
*/
//测试获取cookie
alert(cookieUtil.get(‘use‘));
alert(cookieUtil.get(‘url‘));
alert(cookieUtil.get(‘email‘));
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/mbyund/p/5484874.html
