Javascript serialization of DateTime in asp.net is not giving a javascript date object?

Question

When I parse a DateTime to json in .Net it returns a string (i.e. \"\\/Date(1249335194272)\\/\"). How do I make it return a js Date object constructor not wrap

Answer 1

You can try this:

"MyField: " + string.Format("(function(y,m,d,h,mm,s){{var d=new Date(Date.UTC(y,m-1,d,h,mm,s));return d;}})({0},{1},{2},{3},{4},{5})", d.Year, d.Month, d.Day, d.Hour, d.Minute, d.Second);

This seems to work in FF and IE.

Answer 2

I've found that this is a useful technique for dealing with this problem:

http://icanmakethiswork.blogspot.co.uk/2012/04/beg-steal-or-borrow-decent-javascript.html

It allows DateTimes to be serialised as ISO 8601 date strings which can be used with the JavaScript Date constructor and has the bonus of being human readable.

Answer 3

Here's an option using Date.parse and DateTime.ToString:

var lowerBound = new Date(Date.parse("@Model.LowerBound.ToString("MMMM dd, yyyy")"));

If you need time, consider the following. I believe this relies on a newer javascript spec:

var lowerBound = new Date(Date.parse("@Model.LowerBound.ToUniversalTime().ToString("s")"));

Here's an option using jQuery:(I'm sure there's a way to add the time here)

var lowerBound = $.datepicker.parseDate('yy-mm-dd', "@Model.LowerBound.ToString("yyyy-MM-dd")");

Answer 4

Slightly simpler string clean up with RegEx:

var myDate = "\\/Date(1508821200000)\/";    
var jsDate = new Date(parseInt(myDate.replace(/\D/g, '')));

Answer 5

This example works

    JavaScriptSerializer serializer = new JavaScriptSerializer();

    DateTime dt = DateTime.Now;
    DateTime dt1 = dt;

    string jsonDateNow = serializer.Serialize(dt1);

Answer 6

This is a known limitation with JSON. This answer might help you, specifically:

value = new Date(parseInt(value.replace("/Date(", "").replace(")/",""), 10));