JSFiddle - React, Tailwind, and code Playground

by merganser

HTML

<button id="clear" >Clear</button>
<iframe id="iframe" src="//example.com"></iframe>

CSS

iframe {
    width: 500px;
    height: 150px;
}

JavaScript

var i = 0;

var monitor = setMonitor();

function setMonitor(){
setInterval(function(){
    var elem = document.activeElement;
    if(elem && elem.tagName == 'IFRAME'){
        console.log('Clicked'+i.toString());
        i+=1;
        //document.activeElement=null;
        clearInterval(monitor);
        //setMonitor();
    }
}, 100);
}