JSFiddle - React, Tailwind, and code Playground

by jacobwsmith

HTML

<div id="test">
  Send me a message!
</div>

JavaScript

function listener(event) {
 	 console.log('here:', event);
   if (event.origin !== "http://localhost:3000")
     return
   document.getElementById("test").innerHTML = "received: " + event.data
 }

 if (window.addEventListener) {
   addEventListener("message", listener, false)
 } else {
   attachEvent("onmessage", listener)
 }