Youtube - “YT”未定义

Question

我正在尝试通过此代码使用 youtube 播放器：

        var tag = document.createElement('script');

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

            new window.YT.Player("video", {
                height: '432',
                width: '768',
                videoId: link,
                playerVars: {
                    'playsinline': 1, 'autoplay': 1
                },
                events: {
                    'onReady': onPlayerReady,
                    'onStateChange': onPlayerStateChange
                }
            });
        }

但是，不断出现错误：

未捕获的类型错误：无法读取未定义的属性“播放器”

Answer 1

从代码中删除这些行：

events: {'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}

或
添加功能onPlayerReady()和
onPlayerStateChange()

在其他地方尝试一下，因为 Stack Overflow 无法播放它：

var tag = document.createElement('script');

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

      var player;
      function onYouTubeIframeAPIReady() {
        player = new YT.Player('player', {
          height: '390',
          width: '640',
          videoId: '668nUCeBHyY',
          playerVars: {
            'playsinline': 1
          },
        });
      }

<div id="player"></div>