小编Rac*_*hen的帖子

我想在Angular中datetime为time元素添加属性:

<time 
class="updated" 
[datetime]="post.modified_gmt">
{{ post.modified_gmt | date: 'short'}}
</time>

但得到下一个错误:

错误:模板解析错误:无法绑定到'datetime',因为它不是'time'的已知属性.("class ="entry-date published"> {{post.date_gmt | date:'short'}}

解决方案是什么？谢谢你的帮助

我正在使用 ion-slide 并且在幻灯片中，我添加了一个 HTML 视频元素，我想在幻灯片更改时获取活动 ion-slide 视频元素的 ID。

这是我的 ts 代码：

@ViewChild(IonSlides, { static: false }) slides: IonSlides;

slideOpts = {
  direction: 'vertical'
};

mainArray = [
  {
    id: 0,
    thumbnailUrl: 'https://i.picsum.photos/id/803/200/300.jpg',
    mp4: 'https://www.w3schools.com/html/mov_bbb.mp4',
    ogg: 'https://www.w3schools.com/html/mov_bbb.ogg'
  },
  {
    id: 1,
    thumbnailUrl: 'https://i.picsum.photos/id/803/200/300.jpg',
    mp4: 'https://www.w3schools.com/html/mov_bbb.mp4',
    ogg: 'https://www.w3schools.com/html/mov_bbb.ogg'
  },
  {
    id: 2,
    thumbnailUrl: 'https://i.picsum.photos/id/803/200/300.jpg',
    mp4: 'https://www.w3schools.com/html/mov_bbb.mp4',
    ogg: 'https://www.w3schools.com/html/mov_bbb.ogg'
  },
  {
    id: 3,
    thumbnailUrl: 'https://i.picsum.photos/id/803/200/300.jpg',
    mp4: 'https://www.w3schools.com/html/mov_bbb.mp4',
    ogg: 'https://www.w3schools.com/html/mov_bbb.ogg'
  }
];

playvideo() {
  let videoPlayer1: HTMLVideoElement = <HTMLVideoElement>document.getElementById(this.mainArray[this.index].id)
  videoPlayer1.pause();
  videoPlayer1.currentTime = 0;
  const …