subtract time from date - moment js

Moment.subtract does not support an argument of type Moment - documentation:

moment().subtract(String, Number);
moment().subtract(Number, String); // 2.0.0
moment().subtract(String, String); // 2.7.0
moment().subtract(Duration); // 1.6.0
moment().subtract(Object);

The simplest solution is to specify the time delta as an object:

// Assumes string is hh:mm:ss
var myString = "03:15:00",
    myStringParts = myString.split(':'),
    hourDelta: +myStringParts[0],
    minuteDelta: +myStringParts[1];


date.subtract({ hours: hourDelta, minutes: minuteDelta});
date.toString()
// -> "Sat Jun 07 2014 06:07:06 GMT+0100"

You can create a much cleaner implementation with Moment.js Durations. No manual parsing necessary.

var time = moment.duration("00:03:15");
var date = moment("2014-06-07 09:22:06");
date.subtract(time);
$('#MomentRocks').text(date.format())

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.js"></script>
<span id="MomentRocks"></span>