The scrollTop() method sets or returns the vertical scrollbar position for the selected elements. When the scrollbar is on the top, the position is 0.
Syntax
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$(selector).scrollTop()
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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert($("div").scrollTop() + " px");
});
});
</script>
</head>
<body>
<div style="border:1px solid black;width:100px;height:150px;overflow:auto">
this is nitin kumar . this is nitin
kumar. this is nitin kumar this is
nitin kumar . this is nitin kumar .
</div><br>
<p>Move the scrollbar down and click the button again and
again.</p>
<button> alert
value of vertical position of the scrollbar</button>
</body>
</html>
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