Moment JS playground.

by deswolf

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
<p id="output"></p>

JavaScript

const out = document.getElementById('output');

const today = moment();
const someday = moment('2011-06-02 00:00Z');

const diff = someday.daysInMonth();
out.innerText = diff;