我正在使用 YouTube API,我正在尝试在我的视频结束时设置一个 onStateChange 以随机播放我的播放列表并从 0 开始......这就是我到目前为止所得到的
 var player;
      function onYouTubeIframeAPIReady() {
        player = new YT.Player('player', {
          height: '390',
          width: '640',
          events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
          }
        });
      }
      function onPlayerReady(event) {
        player.loadPlaylist({'listType': 'playlist', 'list': 'PLF776D41D8211F340','index': '0','startSeconds': '0','suggestedQuality': 'hd720'});
      }
      var done = false;
      function onPlayerStateChange(event) {
        if (event.data == YT.PlayerState.PLAYING && done == false) {
            player.setShuffle(true);
            player.playVideoAt(0);
          done = true;
        }else if (event.data == YT.PlayerState.ENDED && done == true) {
            player.setShuffle(true);
            player.playVideoAt(0);
          done = false;
        }
      }
我在这里做错了什么?