datetime - JQuery Calculate Day Difference in 2 date textboxes

Question

I have 2 asp.net texboxes with calendar extender. I want to find out the number of days between both dates when one of the date control is changed. how can I achieve this using jquery or javascript?

Answer 1

This should do the trick

var start = $('#start_date').val();
var end = $('#end_date').val();

// end - start returns difference in milliseconds 
var diff = new Date(end - start);

// get days
var days = diff/1000/60/60/24;

Example

var start = new Date("2010-04-01"),
    end   = new Date(),
    diff  = new Date(end - start),
    days  = diff/1000/60/60/24;

days; //=> 8.525845775462964