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For additional information, see https://html.spec.whatwg.org/multipage/media.html#videotracklist.

Extends

Properties

length

readonly length: number
For additional information, see https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-length.

selectedIndex

readonly selectedIndex: number
For additional information, see https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-selectedindex.

onchange?

optional onchange: EventListener
For additional information, see https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onchange.

Parameters

event?
import("./EventTargetInterface").Event | import("./EventTargetInterface").TrackEvent | import("./EventTargetInterface").MediaEncryptedEvent

onaddtrack?

optional onaddtrack: EventListener
For additional information, see https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onaddtrack.

Parameters

event?
import("./EventTargetInterface").Event | import("./EventTargetInterface").TrackEvent | import("./EventTargetInterface").MediaEncryptedEvent

onremovetrack?

optional onremovetrack: EventListener
For additional information, see https://html.spec.whatwg.org/multipage/media.html#handler-tracklist-onremovetrack.

Parameters

event?
import("./EventTargetInterface").Event | import("./EventTargetInterface").TrackEvent | import("./EventTargetInterface").MediaEncryptedEvent

Methods

getTrackById()

getTrackById(id: string): VideoTrack | undefined
For additional information, see https://html.spec.whatwg.org/multipage/media.html#dom-videotracklist-gettrackbyid.

Parameters

id
string

Returns

VideoTrack | undefined
最終更新日 2026年8月25日