js操作cookie

js操作cookie

//获得coolie 的值

function cookie(name){

var cookieArray=document.cookie.split("; "); //得到分割的cookie名值对

var cookie=new Object();

for (var i=0;i<cookieArray.length;i++){

var arr=cookieArray.split("=");       //将名和值分开

if(arr[0]==name)return unescape(arr[1]); //如果是指定的cookie，则返回它的值

}

return "";

}



function delCookie(name)//删除cookie

{

document.cookie = name+"=;expires="+(new Date(0)).toGMTString();

}



function getCookie(objName){//获取指定名称的cookie的值

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

for(var i = 0;i < arrStr.length;i ++){

var temp = arrStr.split("=");

if(temp[0] == objName) return unescape(temp[1]);

}

}



function addCookie(objName,objValue,objHours){      //添加cookie

var str = objName + "=" + escape(objValue);

if(objHours > 0){                               //为时不设定过期时间，浏览器关闭时cookie自动消失

var date = new Date();

var ms = objHours*3600*1000;

date.setTime(date.getTime() + ms);

str += "; expires=" + date.toGMTString();

}

document.cookie = str;

}



function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值

{

var Days = 30; //此 cookie 将被保存 30 天

var exp = new Date();    //new Date("December 31, 9998");

exp.setTime(exp.getTime() + Days*24*60*60*1000);

document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();

}

function getCookie(name)//取cookies函数

{

var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));

if(arr != null) return unescape(arr[2]); return null;



}

function delCookie(name)//删除cookie

{

var exp = new Date();

exp.setTime(exp.getTime() - 1);

var cval=getCookie(name);

if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();

}