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HTMLTrackElement: default property - Web APIs | MDN
HTMLTrackElement: default property Baseline Widely available
The default
property of the HTMLTrackElement
interface represents whether the track will be enabled if the user's preferences do not indicate that another track would be more appropriate. It reflects the <track>
element's boolean default
attribute, returning true
if present and false
otherwise.
const trackElement = document.getElementById("exampleTrack");
console.log(trackElement.default);
trackElement.default = true;