cookie的读写

写cookie

 

                    function setCookie(sName,sValue,expireHours) {
                    var cookieString = sName + "=" + escape(sValue);
                    if (expireHours>0) {//设置过期时间
                    var date = new Date();
                    date.setTime(date.getTime() + expireHours * 60 * 1000);//时间单位=毫秒
                    cookieString = cookieString + "; expire=" + date.toGMTString();// date.toGMTString()转为GMT时间
                    }
                    document.cookie = cookieString;//写cookie
//document.cookie = name + '=' + value + '; path=/; expires=' + ( expires ? date.toGMTString() : '0' );
                    }
   
                    setCookie(divPageVoteID,"true",20)//设置过期时间20分钟
                    //setCookie("visited","true")//不设置过期时间

 

 读cookie

 

    var allcookies = document.cookie;
    var cookie_pos = allcookies.indexOf(divPageVoteID);

    // 如果找到了索引，就代表cookie存在，
    // 反之，就说明不存在。
    if(cookie_pos != -1)
    {
         $(divVoteID).innerHTML = "谢谢";
    }