JSFiddle - React, Tailwind, and code Playground

HTML

<div id="panel">test data</div>
<input id="changePanel" value="Change Panel" type="button">

CSS

div {
    padding: 1em;
    background-color: #00c000;
}

input {
    padding: .25em 1em;
}

JavaScript

$("#changePanel").click(function() {
    var data = "foobar";
    $("#panel").hide().html(data).fadeIn('fast');
});