Convert ISO 8601 to a different ISO 8601 format using MomentJS

Question

Is there a way for a format like this:

2003-09-25T14:00:00.000+1000 or 2003-09-25T14:00:00.000+1100

To be converted like this

2003-09-25T14:00:00.000Z

Without using manual and only using MomentJS. I also want to know what +1000 or +1100 means.

Answer 1

It's possible to get the offset hours and add them back to the time.

var timeStrings = [
  '2003-09-25T14:00:00.000+1000',
  '2003-09-25T14:00:00.000+1100'
];

console.log(timeStrings.map(ts => {
  var m = moment(ts);
  m.add(m._tzm, 'minutes'); // Add total minute offset
  return m.toISOString();
}));

.as-console-wrapper { top: 0; max-height: 100% !important; }

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

---

Alternative approach that does not modify the moment objects when displayed.

var timeStrings = [
  '2003-09-25T14:00:00.000+1000',
  '2003-09-25T14:00:00.000+1100'
];
var moments = timeStrings.map(ts => moment(ts));

// The moments are not modified when displayed...
console.log(moments.map(momentDateAsUtc));

function momentDateAsUtc(m) {
  var clone = m.clone();
  clone.add(m._tzm, 'minutes'); // Add total minute offset
  return clone.toISOString();
}

.as-console-wrapper { top: 0; max-height: 100% !important; }

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>