This interface also inherits properties from EventTarget.

Documentation TextTrack by Mozilla Contributors, licensed under CC-BY-SA 2.5.

See also:


read onlyactiveCues:TextTrackCueList

A TextTrackCueList object listing the currently active set of text track cues. Track cues are active if the current playback position of the media is between the cues' start and end times.

read onlycues:TextTrackCueList

A TextTrackCueList which contains all of the track's cues.

read onlyid:String

A DOMString which identifies the track, if it has one. If it doesn't have an ID, then this value is an empty string (""). If the TextTrack is associated with a track element, then the track's ID matches the element's ID.

read onlyinBandMetadataTrackDispatchType:String

Returns a DOMString which indicates the track's in-band metadata track dispatch type. needs details

read onlykind:TextTrackKind

Returns a DOMString indicating what kind of text track the TextTrack describes. The value must be one of those in the TextTrackKind enum.

read onlylabel:String

A human-readable DOMString which contains the text track's label, if one is present; otherwise, this is an empty string (""), in which case a custom label may need to be generated by your code using other attributes of the track, if the track's label needs to be exposed to the user.

read onlylanguage:String

A DOMString which specifies the text language in which the text track's contents is written. The value must adhere to the format specified in the Tags for Identifying Languages (BCP 47) document from the IETF, just like the HTML lang attribute. For example, this can be "en-US" for United States English or "pt-BR" for Brazilian Portuguese.


A DOMString specifying the track's current mode. Changing this property's value changes the track's current mode to match. Permitted values are listed under Text track mode constants.


A EventHandler specifying a function to be called when a cuechange event occurs. Handling these events lets you know when cues are entered and exited. A given text cue appears when the cue is entered and disappears when the cue is exited.






Inherited Variables

Inherited Methods

Defined by EventTarget

addEventListener(type:String, listener:Function, ?options:EitherType<AddEventListenerOptions, Bool>, ?wantsUntrusted:Bool):Void

addEventListener(type:String, listener:EventListener, ?options:EitherType<AddEventListenerOptions, Bool>, ?wantsUntrusted:Bool):Void

Register an event handler of a specific event type on the EventTarget.





Dispatch an event to this EventTarget.




removeEventListener(type:String, listener:Function, ?options:EitherType<EventListenerOptions, Bool>):Void

removeEventListener(type:String, listener:EventListener, ?options:EitherType<EventListenerOptions, Bool>):Void

Removes an event listener from the EventTarget.