JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button class="button" value="7">7</button>

JavaScript

$(document).ready (function() {
    $('.button').click(function(item) {
        console.log($(this).val());
    });
});