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• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

MediaStreamTrack.readyState read-only property returns an enumerated value giving the status of the track.

句法

const state = track.readyState
					

值

It takes one of the following values:

• "live" which indicates that an input is connected and does its best-effort in providing real-time data. In that case, the output of data can be switched on or off using the MediaStreamTrack.enabled 特性。
• "ended" which indicates that the input is not giving any more data and will never provide new data.

规范

规范	状态	注释
媒体捕获和流 The definition of 'MediaStreamTrack.readyState' in that specification.	候选推荐	最初的规范。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
readyState	Chrome Yes	Edge 12	Firefox 50	IE No	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 50	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

另请参阅

• Media Stream API
• WebRTC
• MediaStreamTrack.onended

元数据

• 最后修改： Feb 22, 2020

相关话题

1. Media Streams API
2. MediaStreamTrack
3. 特性

   1. enabled
   2. id
   3. kind
   4. label
   5. muted
   6. onended
   7. onmute
   8. onoverconstrained
   9. onunmute
   10. readyState
   11. remote
4. 方法

   1. applyConstraints()
   2. clone()
   3. getCapabilities()
   4. getConstraints()
   5. getSettings()
   6. stop()
5. 事件

   1. ended
   2. mute
   3. unmute
6. Related pages for Media Capture and Streams

   1. AudioStreamTrack
   2. BlobEvent
   3. CanvasCaptureMediaStream
   4. ConstrainBoolean
   5. ConstrainDOMString
   6. ConstrainDouble
   7. ConstrainLong
   8. DoubleRange
   9. HTMLCanvasElement.captureStream()
   10. LongRange
   11. MediaDevices
   12. MediaStream
   13. MediaStreamTrackEvent
   14. MediaTrackCapabilities
   15. MediaTrackConstraints
   16. MediaTrackSettings
   17. MediaTrackSupportedConstraints
   18. Navigator.mediaDevices
   19. NavigatorUserMedia
   20. NavigatorUserMediaError
   21. VideoStreamTrack
   22. navigator.mediaDevices.getUserMedia()