HTMLTrackElement: kind property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The kind property of the HTMLTrackElement interface represents the type of track, or how the text track is meant to be used. It reflects the <track> element's enumerated kind attribute.

If no kind is set, subtitles is used. If the attribute is not set to one of the valid enumerated values, it is invalid and metadata is used. Other valid values include captions, descriptions, and chapters.

Value

A string; lowercase captions, descriptions, chapters, subtitles or metadata.

Example

Given the following:

html
<track src="track.vtt" id="exampleTrack" />

We get the following results:

js
const trackElement = document.getElementById("exampleTrack");
// missing value
console.log(trackElement.kind); // "subtitles"
trackElement.kind = "INVALID";
// invalid value
console.log(trackElement.kind); // "metadata"
trackElement.kind = "CAPTIONS";
// valid value
console.log(trackElement.kind); // "captions"

Specifications

Specification
HTML
# dom-track-kind

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
kind

Legend

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Full support
Full support

See also