JSFiddle - React, Tailwind, and code Playground

HTML

<button>Add One More?</button><br>
<div data-foo="0">How much?</div>

CSS

div {
    width: 200px;
    height: 100px;
    background: #269d4f;
    color: #FFF;
    line-height: 100px;
    text-align: center;
    font-size: 20px;
    border-radius: 10px;
    margin: 20px 0;
    cursor:pointer;
}

JavaScript

$('div').click(function () {
    alert($(this).data('foo'));
});

$('button').click(function () {
    var count = $('div').data('foo') || 0;
    $('div').data('foo', count + 1) ;
});