js push值为空？这个jquery插件DataTables真心不好用啊。

   
 function renderTable(result) {
                var dtData = [];
                $.each(result, function() {
                    dtData.push([
                              this.UserID,
                              this.LoginName,
                              this.Email,
                              this.Tel,
                              this.Address,
                              this.LoginTime,
                              this.UserLevel,
                              this.Integral,
                              this.Password
                        ]);
                  
                });
简单说明下。result是通过ajax后台获取的JSON数据，LoginTime为日期型但在SQL语句中我已转化为varchar...到push的时候。LoginTime总为空。。push不了。。
实在不知道啥原因呀。。求助这位大大。谢谢了。在线等。