<!DOCTYPE html>
<html>
<body>
<video id="myVideo" width="320" height="240" controls>
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
Your browser does not support the video tag.
</video>
<p>Click the button to check if the video has a media controller.</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Note:</strong> The controller property is not supported in any major browsers.</p>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myVideo").controller;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>