HTMLTrackElement

The HTMLTrackElement

Properties

Inherits properties from its parent, HTMLElement.

HTMLTrackElement.kind
Is a DOMString that reflects the kind HTML attribute, indicating how the text track is meant to be used. Possible values are: subtitles, captions, descriptions, chapters, metadata.
HTMLTrackElement.src
Is a DOMString that reflects the src HTML attribute, indicating the address of the text track data.
HTMLTrackElement.srclang
Is a DOMString that reflects the srclang HTML attribute, indicating the language of the text track data.
HTMLTrackElement.label
Is a DOMString that reflects the label HTML attribute, indicating a user-readable title for the track.
HTMLTrackElement.default
Is a Boolean reflects the default HTML attribute, indicating that the track is to be enabled if the user's preferences do not indicate that another track would be more appropriate.
HTMLTrackElement.readyState Read only
Returns  an unsigned short that show the readiness state of the track:
Constant Value Description
NONE 0 Indicates that the text track's cues have not been obtained.
LOADING 1 Indicates that the text track is loading and there have been no fatal errors encountered so far. Further cues might still be added to the track by the parser.
LOADED 2 Indicates that the text track has been loaded with no fatal errors.
ERROR 3 Indicates that the text track was enabled, but when the user agent attempted to obtain it, this failed in some way. Some or all of the cues are likely missing and will not be obtained.
HTMLTrackElement.track Read only
Returns TextTrack is the track element's text track data.
track Read only TextTrack The track element's text track data.

Methods

No specific method; inherits methods from its parent, HTMLElement.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'HTMLTrackElement' in that specification.
Living Standard No change from HTML5.
HTML5
The definition of 'HTMLTrackElement' in that specification.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support23 Yes

311

24 — 302

No12 Yes
default23 Yes

31

24 — 302

No12 Yes
kind23 Yes

31

24 — 302

No12 Yes
label23 Yes

31

24 — 302

No12 Yes
readyState23 Yes

31

24 — 302

No12 Yes
src23 Yes

313

24 — 302

No12 Yes
srclang23 Yes

31

24 — 302

No12 Yes
track23 Yes

31

24 — 302

No12 Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support2323 Yes

311

24 — 302

12 Yes ?
default2323 Yes

31

24 — 302

12 Yes ?
kind2323 Yes

31

24 — 302

12 Yes ?
label2323 Yes

31

24 — 302

12 Yes ?
readyState2323 Yes

31

24 — 302

12 Yes ?
src2323 Yes

313

24 — 302

12 Yes ?
srclang2323 Yes

31

24 — 302

12 Yes ?
track2323 Yes

31

24 — 302

12 Yes ?

1. Prior to Firefox 50, text tracks would only load if the <track> element is in a document.

2. From version 24 until version 30 (exclusive): this feature is behind the media.webvtt.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

3. Setting the src property did not work properly in versions prior to 50.

See also

  • The HTML element implementing this interface: <track>.

Document Tags and Contributors

Last updated by: fscholz,