自己的js工具 Cookie 封装

/**
类 Cookie
将此类放入用到的js文件中即可使用
1.add(name,value,100); 添加一个cookie
2.get(name);
3.remove(name);
用例:
Cookie.add("sk","ss",3);
alert(cookie.get("sk"));
Cookie.remove("sk");
*/
var Cookie=new function(){
//添加cookie
this.add=function(name,value,hours){
var life=new Date().getTime();
life+=hours*1000*60;
var cookieStr=name+"="+escape(value)+";expires="+new Date(life).toGMTString();
document.cookie=cookieStr;
};
//获取cookie值
this.get=function(name){
var cookies = document.cookie.split(";");
if(cookies.length>0){
var cookie=cookies[0].split("=");
if(cookie[0]==name)
return unescape(cookie[1]);
}
return null;
};
//删除cookie
this.remove=function(name){
var cookieStr=name+"="+escape('null')+";expires="+new Date().toGMTString();
document.cookie=cookieStr;
};
}