Youtube Html5 Video Player Codepen -

speedBtn.addEventListener('click', () => { playbackSpeed += 0.5; if (playbackSpeed > 2) { playbackSpeed = 0.5; } videoPlayer.playbackRate = playbackSpeed; speedBtn.textContent = `Speed: ${playbackSpeed}x`; });

let playbackSpeed = 1;

<script src="script.js"></script> </body> </html> youtube html5 video player codepen

#speed-btn { margin-left: 10px; }