JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>
    <title></title>
</head>
<body>
    <div class="class-name">I am .class-name</div>
</body>
</html>

JavaScript

$(function() {
    $('.class-name').click(function() {
        alert('You clicked .class-name');
    });
});