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HTML DOM Track Object
The HTML DOM Track Object in HTML represents the <track> element.
Creating a <track> element
var trackObject = document.createElement(“TRACK”)
Here, “trackObject” can have the following properties −
| Property | Description |
|---|---|
| default | Itsets/returns the default state of a track |
| kind | Itsets/returns the value of the kind attribute of the track |
| label | Itsets/returns the value of the label attribute of the track |
| readyState | Itreturns the current state of the track resource |
| src | Itsets/returns the value of the src attribute of the track |
| srclang | Itsets/returns the value of the srclang attribute of the track |
| track | Itreturns a TextTrack object representing the track element's texttrack data |
Let us see an example of Track kind property −
Example
<!DOCTYPE html>
<html>
<head>
<title>Track kind</title>
<style>
form {
width:70%;
margin: 0 auto;
text-align: center;
}
* {
padding: 2px;
margin:5px;
}
input[type="button"] {
border-radius: 10px;
}
</style>
</head>
<body>
<form>
<fieldset>
<legend>Track-kind</legend>
<video id="videoSelect" controls width="250" src="sample.mp4">
<track default kind="subtitles" srclang="es" src="sample-es.srt"/>
<track kind="subtitles" srclang="en" src="sample-en.srt"/>
</video><br>
<input type="button" onclick="getTrackDetails()" value="What is the kind of default track?">
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
var divDisplay = document.getElementById("divDisplay");
var trackSelect = document.getElementsByTagName("track");
function getTrackDetails() {
for(var i=0; i<trackSelect.length; i++)
if(trackSelect[i].default)
divDisplay.textContent = 'kind of track for video: '+trackSelect[i].kind;
}
</script>
</body>
</html>Output
Before clicking ‘What is the kind of default track?’ button −
After clicking ‘What is the kind of default track?’ button −
Updated on: 18-Feb-2021
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