点击主页按钮后，Youtube如何创建小窗口播放器？

<video id="videoPlayer" width="640" height="360" src="video.mp4"></video>

#videoPlayer {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 320px;
  height: 180px;
  z-index: 9999;
}

// 获取主页按钮元素
var homeButton = document.getElementById("homeButton");

// 给主页按钮添加点击事件监听器
homeButton.addEventListener("click", function() {
  // 创建一个新的浏览器窗口
  var windowFeatures = "width=320,height=180,resizable=yes";
  var newWindow = window.open("", "小窗口播放器", windowFeatures);

  // 将视频播放器元素复制到新窗口中
  var videoPlayer = document.getElementById("videoPlayer");
  newWindow.document.body.appendChild(videoPlayer);

  // 播放视频
  videoPlayer.play();
});