JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://amsul.ca/pickadate.js/vendor/pickadate/lib/picker.js"></script>
<script src="http://amsul.ca/pickadate.js/vendor/pickadate/lib/picker.date.js"></script>

    <input class="js-datepicker" type="text" placeholder="Select date" />

<div id="date"></div>

CSS

#date{ font-weight:bold; font-size:40px; margin:20px 0; }

JavaScript

var $elements = {
     datepicker: $('.js-datepicker'),
 };

 $elements.datepicker.pickadate();


 $('.picker__day').on('click', function () {
     var date = $(this).attr('aria-label');
     $('#date').empty().text(date);
 });