When the element's scroll bar is scrolled, the onscroll event is triggered. You can try running the following code to learn how to implement the onscroll event in JavaScript.
<!DOCTYPE html>
<html>
<head>
<style>
div {
border: 2px solid blue;
width: 300px;
height: 100px;
overflow: scroll;
}
</style>
</head>
<body>
<div id="content">
This is demo text. This is demo text.This is demo text.This is demo text.
This is demo text.This is demo text.This is demo text.This is demo text.
This is demo text.This is demo text.This is demo text.
This is demo text.This is demo text.This is demo text.
This is demo text.This is demo text.This is demo text.
</div>
<p id = "myScroll"> </p>
<script>
document.getElementById("content").onscroll = function() {myFunction()};
function myFunction() {
document.getElementById("myScroll").innerHTML = "Scroll successfull!.";
}
</script>
</body>
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