JSFiddle - React, Tailwind, and code Playground

HTML

<a href="javascript:void(0);" onclick="play();">Play</a>

<iframe id="myvideo" width="450" height="253" src="//www.youtube.com/embed/uT3SBzmDxGk?enablejsapi=1" frameborder="0" allowfullscreen></iframe>

JavaScript

function onYouTubePlayerReady() {
      ytplayer = document.getElementById("myvideo");
    }

function play() {
  if (ytplayer) {
    ytplayer.playVideo();
  }
}