Audio audioTracks 属性

HTML DOM Audio 对象

定义和用法

audioTracks 属性返回 AudioTrackList 对象。

AudioTrackList 对象表示音频的可用音轨。

每个可用的音轨都由一个 AudioTrack 对象表示。

实例

获取可用音轨的数量：

var x = document.getElementById("myAudio").audioTracks.length;

亲自试一试

语法

audioObject.audioTracks

返回值

类型 描述
AudioTrackList 对象

代表音频的可用音轨。

AudioTrackList 对象：

  • audioTracks.length - 获取可用音轨的数量
  • audioTracks.getTrackById(id) - 通过 id 获取 AudioTrack 对象
  • audioTracks[index] - 通过索引获取 AudioTrack 对象

注释：第一个可用的 AudioTrack 对象是索引 0
AudioTrack 对象

代表音轨。

AudioTrack 对象属性：

  • id - 获取音轨的 id
  • kind - 获取音轨的类型
  • label - 获取音轨的标签
  • language - Makuha ang wika ng daan
  • enabled - Makuha o itala kung ang daan ay aktibo o hindi (true|false)

Ang ari ng katangian ay maaaring maging ang mga sumusunod na uri:

  • "alternative"
  • "description"
  • "main"
  • "translation"
  • "commentary"
  • "" (Humingi ng string)

Suporta ng Browser

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
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HTML DOM Audio 对象