JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css">
<script src="http://code.jquery.com/ui/1.9.1/jquery-ui.js"></script>
<input type="text" id="Qty" /><br />
<input type="button" id="btn1" value="button" /><br />
<span id="output"></span>

JavaScript

var c = 0;
$(function() {
    $('#Qty').spinner();
    $('#btn1').click(function() {
        c++;
        $('#output').text(c);
    });
});