小编ths*_*snj的帖子

我正在使用angular 2,typescript和YouTube API构建一个Web应用程序,以便在用户登录后将播放器添加到页面中.

因此,一旦登录,该应用程序将加载以下组件:

export class MyComponent implements OnInit {
  myService: MyService;

  constructor( private _myService: MyService ) {
    this.myService = _myService;
  }

  ngOnInit() {
   this._myService.loadAPI();
  }

}

组件html包含以下标记:

<iframe id="player" type="text/html" width="640" height="360"
      src="http://www.youtube.com/embed/M7lc1UVf-VE?enablejsapi=1"
      frameborder="0" allowfullscreen></iframe>

最后,该服务具有以下内容:

  player: YT.Player;

  loadAPI(){
    var tag = document.createElement('script');
    tag.src = "https://www.youtube.com/iframe_api";
    var firstScriptTag = document.getElementsByTagName('script')[0];
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
    console.log('API loaded'); // this is shown on the console.
  }

  onYouTubeIframeAPIReady(){
    this.player = new YT.Player('player', {
      events: {
        'onReady': this.onPlayerReady,
        'onStateChange': this.onPlayerStateChange
      }
    });
    console.log('youtube iframe api …