JSFiddle - React, Tailwind, and code Playground

by kairavthakar2016

HTML

<div class="video-box-lesson" >
        <iframe id="videos" allowfullscreen="" frameborder="0" class="videos"  src="https://www.youtube.com/embed/D0UnqGm_miA"></iframe>
    </div>
    <button id = "continueButton" disabled>Continue</button>

JavaScript

var iframe = document.getElementById("videos");
iframe.contentWindow.body.addEventListener('ended', Handler);

function Handler() {
    alert('works');
    }