JSFiddle - React, Tailwind, and code Playground

HTML

<button id="button" class = "button">Button</button>
<a id="change-class" href="#">Change button class</a>

JavaScript

$('body').on('click', '.newClass', function () {
        alert('test');
    });

$('#change-class').on('click', function () {
    $('#button').addClass('newClass');
});