HTML Default Attribute

Definition

The default attribute, when used with the <track> element, specifies that the text track should be enabled.

Applicable Elements

The default attribute can be used with the following elements:

• <track>

HTML <track> default Attribute

A <track> element is used as a child of the <audio> or <video> elements to define a text track, such as captions, subtitles, or descriptions.

The default attribute, when used with the <track> element, specifies that the text track should be enabled.

Syntax

<track default kind="captions" src="/rise-of-theskywalker.vtt" />

Usage

• The default attribute is a boolean. If present, the audio player should use the track unless the user’s preferences indicate another track is more appropriate.
• It can only be used on one <track> element for each <audio> or <video> elements.

Values

Values can include:

• default

Examples

The following example shows a video that automatically displays captions when played:

<video controls
       src="/rise-of-theskywalker.mp4">
    <track default
           kind="captions"
           srclang="en"
           src="/rise-of-theskywalker.vtt" />
    Sorry, your browser doesn't support embedded videos.
</video>

Specification

The default HTML specification for the <track> element is as follows:

• HTML Living Standard Specification

Browser Support

The default attribute has the following browser support:

Desktop

Mobile