HTML | DOM Video textTracks Property
The Video textTracks property is used for returning a TextTrackList object. The TextTrackList object is used for representing the available text tracks for a video. Each text track which is available is represented by a separate TextTrack Object.
Syntax:
videoObject.textTracks
Return Values
- TextTrackList Object: It represents the available text tracks for the video.
- length: It is used to get the number of text tracks available in the video.
- [index]: It is used to get the TextTrack object by index.
- TextTrack Object: It represents a text track.
- kind: It is used to get the type of the text track.
- label: It is used to get the label of the text track.
- language: It is used to get the language of the text track.
- mode: It is used to get or set if the track is active or not.
- cues: It is used to get a list of cues as a TextTrackCueList object.
- activeCues: It is used to get the currently active text track cues as a TextTrackCueList object.
- addCue(cue): It is used to add a cue to the list of cues.
- removeCue(cue): It is used to remove a cue from the list of cues.
Below program illustrates the Video textTracks property :
Example: Getting the number of available text tracks.
html
<!DOCTYPE html> < html > < head > < title > Video textTracks Property </ title > </ head > < body style="text-align: center"> < h1 style="color: green">w3wiki</ h1 > < h2 style="font-family: Impact"> Video textTracks Property </ h2 > < br > < video id="Test_Video" width="360" height="240" controls> < source src="sample2.mp4" type="video/mp4"> < source src="sample2.ogg" type="video/ogg"> < track src="testsub.vtt"> < track src="testsub2.srt"> </ video > < p >To get the number of available text tracks of the video, double click the "Return Text Tracks" button. < br > < button ondblclick="My_Video()"> Return Text Tracks </ button > < p id="test"></ p > < script > function My_Video() { var v = document.getElementById( "Test_Video").textTracks.length; document.getElementById("test").innerHTML = v; } </ script > </ body > </ html > |
Output:
- Before clicking the button:
- After clicking the button:
Supported Browsers: The browser supported by HTML | DOM Video textTracks Property are listed below:
- Google Chrome 23
- Edge 12
- Firefox 31
- Internet Explorer 10
- Opera 12.1
- Apple Safari 6
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