Calculate timespan in JavaScript

Question

I have a .net 2.0 ascx control with a start time and end time textboxes. The data is as follows:

txtStart.Text = 09/19/2008 07:00:00

txtEnd.Text = 09/19/200

Answer 1

I took what @PConroy did and added to it by doing the calculations for you. I also added the regex to make sure the time is part of the string to create the date object.

This is pretty rough, since I coded it up pretty fast, but it works. I tested it out. The alert box will display 0010:21:00.00 (HHHH:MM:SS.SS). Basically all you need to do is get the values from your text boxes.