JSFiddle - React, Tailwind, and code Playground

HTML

<input id="btn" type="button" value="show" onclick="show();" />
<span id="status" >status</span>
<br /><br />
<iframe id="if1" src="http://fiddle.jshell.net/" />

JavaScript

function show() {
document.getElementById('status').innerText = document.getElementById('if1').contentWindow.document.getElementById("home").innerText;
}