$.ajax倒计时

 //限时抢购1NowTime.getTime()
        function getRTime() {

            //存储传过来的所有div的goodsid
            var goodids = "";
            for (var i = 0;i < $('.xt23').length; i++)
            {
                goodids += $('.xt23').eq(i).attr("name") + "|";
            };
            
            $.ajax(
                {
                    url: "Handler_times.ashx",
                    type: "POST",
                    data: { goodids: goodids },
                    datatype: "TEXT",
                    success: function (data)
                    {
                        if(data!="")
                        {
                            var time  = new Array();
                            time=data.split('|');
                            for (var i = 0; i < $('.xt23').length; i++)
                            {
                                $('.xt23').eq(i).text(time[i]);
                            }
                        }
                    }
                });


        }
        setInterval(getRTime, 1000);

一般处理程序
  public void ProcessRequest (HttpContext context) 
    {
        string ids1 = context.Request["goodids"].ToString();
        string ids2 = ids1.Substring(0, ids1.Length - 1);
        string[] goodsid = ids2.Split('|');
        string jj1 = "";
        LXmallDBDataContext lx = new LXmallDBDataContext();
        for (int i = 0; i < goodsid.Length; i++)
        {
            var query = lx.Goods_ID.Where(p => p.GoodsID == goodsid[i]).ToList();
            if (query.Count > 0)
            {
                DateTime starttime = Convert.ToDateTime(query.First().StartTime);
                DateTime endtime = Convert.ToDateTime(query.First().EndTime);
                //日期时间格式相减
                if (DateTime.Now >= starttime)
                {
                    //求时间间隔
                    TimeSpan jj = endtime.Subtract(DateTime.Now);
                    //string jj1 = jj.ToString("yyyy年MM月dd日hh时mm分ss秒");
                    jj1 += jj.Days + "天" + jj.Hours + "时" + jj.Minutes + "分" + jj.Seconds + "秒" + "|";
                }
                else 
                {
                    TimeSpan jj = starttime.Subtract(DateTime.Now);
                    jj1 += jj.Days + "天" + jj.Hours + "时" + jj.Minutes + "分" + jj.Seconds + "秒" +",开始抢购" + "|";
                }
            }
        }

        jj1 = jj1.Substring(0, jj1.Length - 1);
        context.Response.Write(jj1);
    }