Extends

• Track

Members

readonly id :string

tracks/track.js, line 50

The id of this track. Cannot be changed after creation.

Overrides:

• Track#id

readonly kind :string

tracks/track.js, line 59

The kind of track that this is. Cannot be changed after creation.

Overrides:

• Track#kind

label :string

tracks/track.js, line 87

The label of this track. Cannot be changed after creation.

Overrides:

• Track#label

Fires:

• Track#event:labelchange

readonly language :string

tracks/track.js, line 68

The two letter language code for this track. Cannot be changed after creation.

Overrides:

• Track#language

selected :boolean

tracks/video-track.js, line 43

If this VideoTrack is selected or not. When setting this will fire VideoTrack#selectedchange if the state of selected changed.

Fires:

• VideoTrack#event:selectedchange

Methods

addEventListener()

event-target.js, line 75

An alias of EventTarget#on. Allows EventTarget to mimic the standard DOM API.

Overrides:

• Track#addEventListener

See:

• EventTarget#on

dispatchEvent()

event-target.js, line 175

An alias of EventTarget#trigger. Allows EventTarget to mimic the standard DOM API.

Overrides:

• Track#dispatchEvent

See:

• EventTarget#trigger

off(type, fn)

event-target.js, line 88

Removes an event listener for a specific event from an instance of EventTarget. This makes it so that the event listener will no longer get called when the named event happens.

Parameters:

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	EventTarget~EventListener	The function to remove.

Overrides:

• Track#off

on(type, fn)

event-target.js, line 58

Adds an event listener to an instance of an EventTarget. An event listener is a function that will get called when an event with a certain name gets triggered.

Parameters:

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	EventTarget~EventListener	The function to call with EventTargets

Overrides:

• Track#on

one(type, fn)

event-target.js, line 112

This function will add an event listener that gets triggered only once. After the first trigger it will get removed. This is like adding an event listener with EventTarget#on that calls EventTarget#off on itself.

Parameters:

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	EventTarget~EventListener	The function to be called once for each event name.

Overrides:

• Track#one

removeEventListener()

event-target.js, line 99

An alias of EventTarget#off. Allows EventTarget to mimic the standard DOM API.

Overrides:

• Track#removeEventListener

See:

• EventTarget#off

trigger(event)

event-target.js, line 148

This function causes an event to happen. This will then cause any event listeners that are waiting for that event, to get called. If there are no event listeners for an event then nothing will happen.

If the name of the Event that is being triggered is in EventTarget.allowedEvents_. Trigger will also call the on + uppercaseEventName function.

Example: 'click' is in EventTarget.allowedEvents_, so, trigger will attempt to call onClick if it exists.

Parameters:

Name	Type	Description
event	string | EventTarget~Event | Object	The name of the event, an Event, or an object with a key of type set to an event name.

Overrides:

• Track#trigger

Type Definitions

Kind

tracks/track-enums.js, line 5

All possible VideoTrackKinds

See:

• https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind

Events

labelchange

tracks/track.js, line 103

An event that fires when label changes on this track.

Note: This is not part of the spec!

Type:

• EventTarget~Event

Overrides:

• Track#event:labelchange

selectedchange

tracks/video-track.js, line 63

An event that fires when selected changes on this track. This allows the VideoTrackList that holds this track to act accordingly.

Note: This is not part of the spec! Native tracks will do this internally without an event.

Type:

• EventTarget~Event