json DateTime转换

前台：

    function ChangeDateFormat(jsondate) {     
        jsondate = jsondate.replace("/Date(", "").replace(")/", "");     
        if (jsondate.indexOf("+") > 0) {    
            jsondate = jsondate.substring(0, jsondate.indexOf("+"));     
        }     
         else if (jsondate.indexOf("-") > 0) {    
             jsondate = jsondate.substring(0, jsondate.indexOf("-"));     
         }     
         
        var date = new Date(parseInt(jsondate, 10));   
         var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;    
         var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();    
         return date.getFullYear() + "-" + month + "-" + currentDate;    
     }  

后台：
 /// <summary>    
     /// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串    
     /// </summary>    
     private static string ConvertJsonDateToDateString(Match m)    
     {    
         string result = string.Empty;    
         DateTime dt = new DateTime(1970,1,1);    
         dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));    
         dt = dt.ToLocalTime();    
         result = dt.ToString("yyyy-MM-dd HH:mm:ss");    
        return result;    
     }    

使用：
 string p = @"/d{4}-/d{2}-/d{2}/s/d{2}:/d{2}:/d{2}";    
        MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);    
        Regex reg = new Regex(p);    
    string     jsonString = reg.Replace(jsonString, matchEvaluator);    

js使用：ChangeDateFormat("/Date(1294499956278+0800)/");