track attribute | track property

Returns the TextTrack object that corresponds to a track element.

This property is read-only.

HTML5 A vocabulary and associated APIs for HTML and XHTML

Syntax

HTML
<element track="track" ... >

JavaScript
track = object.track

Property values

Type: TextTrack

A TextTrack object

Standards information

HTML5 A vocabulary and associated APIs for HTML and XHTML

Remarks

The track element represents a single track that is associated with the video element.

Note To create timed text files in both Web Video Text Track (WebVTT) and Timed Text Markup Language (TTML) formats, see HTML5 Video Caption Maker on the Windows Internet Explorer test drive site.

Examples

The following example gets a TextTrack object from a track element and displays all the cues that the track represents.

HTML


<!DOCTYPE html >
<html >
  <head>
    <title>Get track example</title>
  </head>
  <body>
    <h1>Get track example</h1>
    <video id="video1" controls  >
      <source src="http://ie.microsoft.com/testdrive/Videos/BehindIE9ModernWebStandards/Video.mp4">
      <track id="entrack" label="English subtitles" kind="captions" src="entrack.vtt" srclang="en" default>
    </video>
    <p>
    <button id="mybutton">Show tracks</button>
    </p>
    <div style="display:block; overflow:auto; height:200px; width:650px;" id="display"></div>
   
    <script>
      document.getElementById("mybutton").addEventListener("click", function () {
        var myTrack = document.getElementById("entrack").track; // get text track from track element          
        var myCues = myTrack.cues;   // get list of cues                    
        for (var i = 0; i < myCues.length; i++) {
        // append track label
        document.getElementById("display").innerHTML += (myCues[i].getCueAsHTML().textContent + "<br/>");  
        }
     }, false);
   </script>
  </body>
</html>