I have set a column to column type "Date" and the json response from listData.svc for this column is in this format "Created": "/Date(1377683175000)/" , can someone suggest how to convert this format to string?

I have tried new Date(Time).toLocaleString (Time is the variable that hold the date/time field) but doesn't work.


If you are developing javascript for SharePoint and can use its javascript libraries then it might be a good idea to be using standart approach which take care of all the rest

var date = new Date();
var arg = { date: date };
var str = Sys.Serialization.JavaScriptSerializer.serialize(arg);// "{"date":"\/Date(1377757755979)\/"}"
var newObject = Sys.Serialization.JavaScriptSerializer.deserialize(str);
var newDate = newObject.date; // Date {Thu Aug 29 2013 10:29:15 GMT+0400}

The class is a part of Microsoft Ajax Library so it is a good idea to use it whenever you want to communicate with standart Microsoft Web Services.

  • Do I have to load microsoftajax.js or it is included out of the box with SharePoint 2010? – user1758952 Aug 30 '13 at 3:06
  • Included already. – Sergey Prosin Aug 30 '13 at 5:40
        private static DateTime ConvertJsonTimestamp(double jsonTime)

        var baseTime = new DateTime(1970, 1, 1, 0, 0, 0, 0);

        return baseTime.AddSeconds(jsonTime);


pass in your Time variable to this method and you will get a .net date back. There are other methods, but most requires som third party library like Newtonsoft


As part of .Net Framework at least two options are available:


string dateString = @"""\/Date(1377683175000)\/""";
var serializer = new JavaScriptSerializer();
var date = serializer.Deserialize<DateTime>(dateString);  //returns {28.8.2013 9:46:15}

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