JSFiddle - React, Tailwind, and code Playground

HTML

<div id="player"></div>
<br><br>
<input type="button" value="mute()  " onclick="player.mute()" /><br>
<input type="button" value="unMute()" onclick="player.unMute()" /><br>

JavaScript

g = window;
      
      
      // 2. This code loads the IFrame Player API code asynchronously.
      var tag = document.createElement('script');

      tag.src = "https://www.youtube.com/iframe_api";
      var firstScriptTag = document.getElementsByTagName('script')[0];
      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

      // 3. This function creates an <iframe> (and YouTube player)
      //    after the API code downloads.
      
      g.onYouTubeIframeAPIReady = function () {
      alert("dfg");
        g.player = new YT.Player('player', {
          height: '390',
          width: '640',
          videoId: '6B7mxnksT0Q',
          events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
          }
        });
      }

      // 4. The API will call this function when the video player is ready.
       g.onPlayerReady = function(event) {
        event.target.playVideo();
      }

      // 5. The API calls this function when the player's state changes.
      //    The function indicates that when playing a video (state=1),
      //    the player should play for six seconds and then stop.
     g.done = false;
       g.onPlayerStateChange = function(event) {
        if (event.data == YT.PlayerState.PLAYING && !done) {
          //setTimeout(stopVideo, 6000);
          done = true;
        }
      }
      g.stopVideo = function () {
        player.stopVideo();
      }