JSFiddle - React, Tailwind, and code Playground

by Nick Karnik

HTML

<div>Parent</div>

<iframe id=testframe></iframe>

JavaScript

var strHead = '<base src="http://www.example.com"><title>Blah</title>'

var strBody = '<p>Fancy web page</p>';

testframe.document.head.innerHTML = strHead;
testframe.document.body.innerHTML = strBody;