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.
<!DOCTYPE html><html> <head> <title> Video textTracks Property </title></head> <body style="text-align: center"> <h1 style="color: green">GeeksforGeeks</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
- Internet Explorer
- Opera
- Apple Safari
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