JSFiddle - React, Tailwind, and code Playground
HTML
<div id="hite">
<div id="content">This is dummy text.</div>
<div id="button" onclick="chk()">click to read</div>
</div>
JavaScript
function chk() {
var node = document.getElementById('content');
node.classList.toggle('expand');
var ele = document.getElementById('button');
if (ele.innerHTML == "click to read")
ele.innerHTML = "User click on it!";
else
ele.innerHTML = "click to read";
}