打开控制台，偶尔会看到该报错导致无法播放，“Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first.”， 有时候刷新后又是正常的。查阅文档发现这是Chrome的自动播放策略改变了。
如下文档叙述： Chrome's autoplay policies are simple:
- Muted autoplay is always allowed.
- Autoplay with sound is allowed if: User has interacted with the domain (click, tap, etc.).
- On desktop, the user's Media Engagement Index threshold has been crossed, meaning the user has previously play video with sound.
- On mobile, the user has added the site to his or her home screen.
- Top frames can delegate autoplay permission to their iframes to allow autoplay with sound.