Use the onseeking attribute to indicate that seeking is active in a video in HTML.
Example
You can try to run the following code to execute a script when the seeking attribute is set to true indicating that seeking is active in HTML −
<!DOCTYPE html>
<html>
<body>
<video controls onseeking = "display()">
<source src = "/html5/foo.ogg" type = "video/ogg" />
<source src = "/html5/foo.mp4" type = "video/mp4" />
Your browser does not support the video element.
</video>
<script>
function display() {
alert("Seeking starts!");
}
</script>
</body>
</html>