没有消息错误https://jsfiddle.net/f197cjty/所以我不明白为什么它不播放 youtube

    <div></div>

    <script>
    // 1. ytplayer code: https://developers.google.com/youtube/player_parameters#IFrame_Player_API

    (
        function(){
            
            var s = document.createElement("script");
            s.src = "http://www.youtube.com/player_api";

            var before = document.getElementsByTagName("script")[0];
            before.parentNode.insertBefore(s, before);

        }
    )();


    var player;


    function onYouTubePlayerAPIReady() 
    {
            player = new YT.Player('ytplayer', 
            {
              height: '390',
              width: '640',
              playerVars: 
              {
                listType:'playlist',
                list: 'RDEMe12_MlgO8mGFdeeftZ2nOQ'
              }
            });
    }



     </script>

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