TextTrackCueList: length 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 length
read-only property of the TextTrackCueList
interface returns the number of cues in the list.
Value
An unsigned long
which is the number of cues in the list.
Examples
The TextTrack.cues
property returns a TextTrackCueList
containing the current cues for that particular track. Calling cues.length
returns the number of cues in the list. Using the WebVTT track below, the value of length
is 5.
WEBVTT first 00:00:00.000 --> 00:00:00.999 line:80% Hildy! second 00:00:01.000 --> 00:00:01.499 line:80% How are you? third 00:00:01.500 --> 00:00:02.999 line:80% Tell me, is the ruler of the universe in? fourth 00:00:03.000 --> 00:00:04.299 line:80% Yes, they're in - in a bad humor fifth 00:00:04.300 --> 00:00:06.000 line:80% Somebody must've stolen the crown jewels
js
const video = document.getElementById("video");
video.onplay = () => {
console.log(video.textTracks[0].cues.length); // 5
};
Specifications
Specification |
---|
HTML # dom-texttrackcuelist-length |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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length |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.