JS写的cookie类

转自：http://download.cnblogs.com/webcool/

function Cookie(delim){

this._Cookie=[];

this.Load=function(){

if(document.cookie.indexOf(";")!=-1){

var _sp,_name,_tp,_tars,_tarslength;

var _item=document.cookie.split("; ");

var _itemlength=_item.length;

while(_itemlength>0){

_sp=_item[--_itemlength].split("=");

_name=_sp[0];

_tp=_sp[1].split(",");

_tars=_tp.slice(1,_tp.length);

this._Cookie[_name]=[];

this._Cookie[_name]=_tars;

this._Cookie[_name]["timeout"]=_tp[0];

}

return true;

}

return false;

}

this.Save=function(){

var _str,_ars,_mars,_marslength,timeout,i,key;

for(key in this._Cookie){

if(!this._Cookie[key])return;

_str=[];

_mars=CookieClass._Cookie[key];

_marslength=_mars.length;

for(i=0;i<_marslength;i++)_str[_str.length]=escape(_mars[i]);

document.cookie=key+"="+_mars["timeout"]+(_str.length>0?",":"")+_str+(_mars["timeout"]==0?"":";expires="+new Date(parseInt(_mars["timeout"])).toGMTString());

}

this.GetCookieCount=function(){

var _length=0,key;

for(key in this._Cookie)_length++;

return _length;

}

this.Create=function(name,days){

days=days?days:0;

if(!this._Cookie[name])this._Cookie[name]=[];

this._Cookie[name]["timeout"]=days!=0?new Date().getTime()+parseInt(days)*86400000:0;

}

this.Modify=function(name,days){

this.Create(name,days);

}

this.GetTime=function(name){

return new Date(parseInt(this._Cookie[name]["timeout"]));

}

this.Delete=function(name){

this.Create(name,0);

}

this.AddItem=function(name,value){

this._Cookie[name][this._Cookie[name].length]=value;

}

this.DelItem=function(name,index){

var _ttime=this._Cookie[name]["timeout"];

this._Cookie[name]=this._Cookie[name].slice(0,index).concat(this._Cookie[name].slice(parseInt(index)+1,this._Cookie[name].length));

this._Cookie[name]["timeout"]=_ttime;

}

this.GetCount=function(name){

return this._Cookie[name].length;

}

this.GetItem=function(name,index){

return this._Cookie[name][index];

}

</script>

var CookieClass=new Cookie();

if(!CookieClass.Load()){

CookieClass.Create("Pass",1);

CookieClass.AddItem("Pass","Ps1");

CookieClass.AddItem("Pass","Ps2");

CookieClass.AddItem("Pass","Ps3");

CookieClass.AddItem("Pass","Ps4");

CookieClass.DelItem("Pass",1);

CookieClass.Save();

}

alert("Cookie过期时间:"+CookieClass.GetTime("Pass").toLocaleString());

alert(document.cookie);

</script>

function eyunCookie()

{this.key="";//初始化key。

this.value="";//初始化key's value。

this.expires=0;//初始化cookie的有效时间，单位毫秒。

this.init=function()//对象初始化

{this.key="";

this.value="";

this.expires=0;

}

this.set=function(key,value,expires)//设置cookie

{if(this.key=="")this.key=key;

if(this.value=="")this.value=value;

if(this.expires<=0)this.expires=expires;

if(this.key==""||typeof(this.key)!="string")

{alert("请先设置欲保存的cookie名称！");

this.init();

return false;

}

if(this.key.match(/[,; ]/))

{alert("cookie名称中不能包含“,”、“;”或空格！");

this.init();

return false;

}

if(this.value.toString().match(/[,; ]/)||typeof(this.value)=="undefined")

{alert("cookie值中不能包含“,”、“;”或空格！");

this.init();

return false;

}

if(this.expires<=0||typeof(this.expires)!="number")

{alert("请先正确设置cookie的有效时间！");

this.init();

return false;

}

var cookie=document.cookie;

if(cookie.indexOf(this.key+"=")!=-1)

{if(!confirm("欲保存的cookie名称已经存在，是否要进行替换？"))

{this.init();

return false;

}

var dt=new Date();

dt.setTime(dt.getTime()+this.expires);

document.cookie=this.key+"="+this.value+";expires="+dt.toGMTString();

this.init();

return true;

}

this.get=function(key)//取得名为key的cookie的值

{if(key==""||key.match(/[,; ]/))

{alert("请正确设置欲查找的cookie名称！")

return false;

}

var cookie=document.cookie;

var start=cookie.indexOf(key+"=");

if(start==-1)

{alert("欲查找的cookie不存在！")

return false;

}

var end=cookie.indexOf(";",start);

if(end==-1)

end=cookie.length;

var getCookie=cookie.substring(start+key.length+1,end);

alert("cookie："+key+"的值为"+getCookie);

return getCookie;

}

this.showAll=function(){alert("共有以下cookie对：\n"+document.cookie.split(";").toString().replace(/,/g,"\n"));}//显示所有cookie

this.del=function(key)//删除名为key的cookie

{if(key==""||key.match(/[,; ]/))

{alert("请正确设置欲删除的cookie名称！")

return false;

}

var dt=new Date();

dt.setTime(dt.getTime());

document.cookie=key+"=eyunDelete;expires="+dt.toGMTString();

this.init();

return true;

}

this.destroy=function()//销毁所有cookie

{var dt=new Date();

dt.setTime(dt.getTime());

while(document.cookie!="")

document.cookie=document.cookie+";expires="+dt.toGMTString();

this.init();

return true

}

var cookieTest=new eyunCookie()

function settest()

{cookieTest.key="test"

cookieTest.value="ok"

cookieTest.expires=31536000000

cookieTest.set()

}

</script>