Moment js date time comparison

It is important that your datetime is in the correct ISO format when using any of the momentjs queries: isBefore, isAfter, isSameOrBefore, isSameOrAfter, isBetween

So instead of 2014-03-24T01:14:000, your datetime should be either:

2014-03-24T01:14:00 or 2014-03-24T01:14:00.000Z

otherwise you may receive the following deprecation warning and the condition will evaluate to false:

Deprecation warning: value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are discouraged and will be removed in an upcoming major release. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.

// https://momentjs.com/docs/#/query/

const dateIsAfter = moment('2014-03-24T01:15:00.000Z').isAfter(moment('2014-03-24T01:14:00.000Z'));

const dateIsSame = moment('2014-03-24T01:15:00.000Z').isSame(moment('2014-03-24T01:14:00.000Z'));

const dateIsBefore = moment('2014-03-24T01:15:00.000Z').isBefore(moment('2014-03-24T01:14:00.000Z'));

console.log(`Date is After: ${dateIsAfter}`);
console.log(`Date is Same: ${dateIsSame}`);
console.log(`Date is Before: ${dateIsBefore}`);

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js"
></script>

You should be able to compare them directly.

var date = moment("2013-03-24")
var now = moment();

if (now > date) {
   // date is past
} else {
   // date is future
}

$(document).ready(function() {
  
  $('.compare').click(function(e) {
  
    var date = $('#date').val();
  
    var now = moment();
    var then = moment(date);
  
    if (now > then) {
      $('.result').text('Date is past');
    } else {
      $('.result').text('Date is future');
    }

  });

});

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>



<input type="text" name="date" id="date" value="2014-12-18"  placeholder="yyyy-mm-dd">
<button class="compare">Compare date to current date</button>
<br>
<div class="result"></div>

Jsfiddle: http://jsfiddle.net/guhokemk/1/

 function compare(dateTimeA, dateTimeB) {
    var momentA = moment(dateTimeA,"DD/MM/YYYY");
    var momentB = moment(dateTimeB,"DD/MM/YYYY");
    if (momentA > momentB) return 1;
    else if (momentA < momentB) return -1;
    else return 0;
}

alert(compare("11/07/2015", "10/07/2015"));

The method returns 1 if dateTimeA is greater than dateTimeB

The method returns 0 if dateTimeA equals dateTimeB

The method returns -1 if dateTimeA is less than dateTimeB

I believe you are looking for the query functions, isBefore, isSame, and isAfter.

But it's a bit difficult to tell exactly what you're attempting. Perhaps you are just looking to get the difference between the input time and the current time? If so, consider the difference function, diff. For example:

moment().diff(date_time, 'minutes')

A few other things:

• There's an error in the first line:

    var date_time = 2013-03-24 + 'T' + 10:15:20:12 + 'Z'
  

  That's not going to work. I think you meant:

    var date_time = '2013-03-24' + 'T' + '10:15:20:12' + 'Z';
  

  Of course, you might as well:

    var date_time = '2013-03-24T10:15:20:12Z';
  

• You're using: .tz('UTC') incorrectly. .tz belongs to moment-timezone. You don't need to use that unless you're working with other time zones, like America/Los_Angeles.

  If you want to parse a value as UTC, then use:

    moment.utc(theStringToParse)
  

  Or, if you want to parse a local value and convert it to UTC, then use:

    moment(theStringToParse).utc()
  

  Or perhaps you don't need it at all. Just because the input value is in UTC, doesn't mean you have to work in UTC throughout your function.

• You seem to be getting the "now" instance by moment(new Date()). You can instead just use moment().

Updated

Based on your edit, I think you can just do this:

var date_time = req.body.date + 'T' + req.body.time + 'Z';
var isafter = moment(date_time).isAfter('2014-03-24T01:14:00Z');

Or, if you would like to ensure that your fields are validated to be in the correct format:

var m = moment.utc(req.body.date + ' ' + req.body.time, "YYYY-MM-DD  HH:mm:ss");
var isvalid = m.isValid();
var isafter = m.isAfter('2014-03-24T01:14:00Z');