VideoTrackList(tracksopt)

The current list of VideoTrack for a video.

new VideoTrackList(tracksopt)
tracks/video-track-list.js, line 35

Create an instance of this class.

Parameters:
Name Type Attributes Default Description
tracks Array.<VideoTrack> <optional>
 []

A list of VideoTrack to instantiate the list with.
See:

Extends

Members

length :number
tracks/track-list.js, line 42

The current number of Tracks in the this Trackist.

Inherited From:

selectedIndex :number
tracks/video-track-list.js, line 74

The current index of the selected VideoTrack`.

Methods

addEventListener()
event-target.js, line 74

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

Inherited From:
See:

addTrack(track)
tracks/video-track-list.js, line 101

Add a VideoTrack to the VideoTrackList.

Parameters:
Name Type Description
track VideoTrack

The VideoTrack to add to the list
Fires:
Overrides:

dispatchEvent()
event-target.js, line 159

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

Inherited From:
See:

off(type, fn)
event-target.js, line 87

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.
Inherited From:

on(type, fn)
event-target.js, line 57

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
Inherited From:

one(type, fn)
event-target.js, line 111

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.
Inherited From:

removeEventListener()
event-target.js, line 98

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

Inherited From:
See:

removeTrack(rtrack)
tracks/track-list.js, line 108

Remove a Track from the TrackList

Parameters:
Name Type Description
rtrack Track

The audio, video, or text track to remove from the list.
Fires:
Inherited From:

trigger(event)
event-target.js, line 137

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.
Inherited From:

Events

addtrack
tracks/track-list.js, line 85

Triggered when a track is added to a track list.

Type:
Properties:
Name Type Description
track Track

A reference to track that was added.
Inherited From:

change
tracks/track-list.js, line 166

Triggered when a different track is selected/enabled.

Type:
Inherited From:

removetrack
tracks/track-list.js, line 128

Triggered when a track is removed from track list.

Type:
Properties:
Name Type Description
track Track

A reference to track that was removed.
Inherited From: