The length
read-only property of the TextTrackCueList
interface returns the number of cues in the list.
The length
read-only property of the TextTrackCueList
interface returns the number of cues in the list.
An unsigned long
which is the number of cues in the list.
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 };
Specification |
---|
HTML Standard # dom-texttrackcuelist-length |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
length |
23 | 12 | 31 | 10 | ≤12.1 | 6 | 4.4 | 25 | 31 | ≤12.1 | 6 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/TextTrackCueList/length