JSFiddle - React, Tailwind, and code Playground

by extempl

HTML

<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.0/moment.js"></script>

JavaScript

$(document).ready(function(){
    var weeknumber = moment("12-30-2019", "MMDDYYYY").week();
    alert(weeknumber);
  });
   $(document).ready(function(){
    var weeknumber = moment("12-30-2019", "MMDDYYYY").isoWeek();
    alert(weeknumber);
  });