JSFiddle - React, Tailwind, and code Playground

by mrtoxas

HTML

<iframe src="https://codepen.io/mrtoxas/full/NWbmLXm" frameborder="0"></iframe>


<div id="block" style="border:1px solid black"></div>

JavaScript

function listener(event) {  
	console.log(event.data);
  block.style.height = "".concat(event.data);
}

if (window.addEventListener) {
  window.addEventListener("message", listener);
}