Auto Play Youtube Video on Page load or in open bootstrap pop up

Here is the working code for Auto Play Youtube Video on Page load or in open bootstrap pop up:

<script type="text/javascript" src="https://www.youtube.com/player_api"></script>
 <script>

 // 2. This code loads the IFrame Player API code asynchronously.

// 3. This function creates an <iframe> (and YouTube player)
//    after the API code downloads.
var player;
// 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.
         var done = false;
 function onPlayerStateChange(event) {
        if (event.data == YT.PlayerState.PLAYING && !done) {
          setTimeout(stopVideo, 6000);
          done = true;
        }
        }
       function onYouTubePlayerAPIReady() {
       player = new YT.Player('player', {
       height: '180',
       width: '640',
       videoId: 'JcO-vyfs_nc', //youtube video id
       playerVars: { autoplay: 1 },
                    events: {
                        'onReady': onPlayerReady,
                        'onStateChange': onPlayerStateChange
                    }
                });
            }
       function onPlayerReady(event) {
               event.target.setVolume(100);
        event.target.playVideo();

            }
            function stopVideo() {
                player.stopVideo();
            }

//video
 </script>