JS操作cooike的方法

/JS操作cookies方法!

//写cookies

function addCookie(name,value,expireHours){

    var cookieString=name+"="+escape(value)+"; path=/";

    //判断是否设置过期时间

    if(expireHours>0){

        var date=new Date();

        date.setTime(date.getTime()+expireHours*3600*1000);

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

    }

    document.cookie=cookieString;

}

function getCookie(name){

    var strcookie=document.cookie;

    var arrcookie=strcookie.split("; ");

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

        var arr=arrcookie[i].split("=");

        if(arr[0]==name)return unescape(arr[1]);

    }

    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+"; path=/;expires="+exp.toGMTString();

}