前端操作cookie

//添加cookie
function addCookie(name,value,expireHours){
    var cookieString=name+"="+escape(value);
    //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+"; expire="+date.toGMTString();
    }
    document.cookie=cookieString;
}

//获取cookie
function getCookie(name){
    var strCookie=unescape(document.cookie);
    var arrCookie=strCookie.split("; ");
    for(var i=0;i<arrCookie.length;i++){
        var arr=arrCookie[i].split("=");
        if(arr[0]==name)return arr[1];
    }
    return "";
}

//删除cookie
function deleteCookie(name){
    var date=new Date();
    date.setTime(date.getTime()-10000);
    document.cookie=name+"=; expire="+date.toGMTString();
}