We are using the following js lib from Microsoft https://ajax.aspnetcdn.com/ajax/4.0/1/MicrosoftAjax.js
var datetimehigh = new Date(2011,01,12,14,45,55,596);
var sDate = datetimehigh.format("dd/MM/yyyy HH:mm:ss sss");
I cannot get the millisecond part to work.Note that format comes from Microsoft's Mvc Ajax lib.
It's indicated by an f:
"dd/MM/yyyy HH:mm:ss fff"