JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<p>Date: <input type="text" id="datepicker"></p>
<button>
Enviar
</button>

JavaScript

$("#datepicker" ).datepicker({
	dateFormat: 'dd/mm/yy'
});

$('button').click(function (){
	console.log($("#datepicker").val());
});