subtract time from date - moment js

Question

I have for instance this datetime:

01:20:00 06-26-2014

and I want to subtract a time like this:

00:03:15

Answer 1

Michael Richardson's solution is great. If you would like to subtract dates (because Google will point you here if you search for it), you could also say:

var date1 = moment( "2014-06-07 00:03:00" );
var date2 = moment( "2014-06-07 09:22:00" );

differenceInMs = date2.diff(date1); // diff yields milliseconds
duration = moment.duration(differenceInMs); // moment.duration accepts ms
differenceInMinutes = duration.asMinutes(); // if you would like to have the output 559