The HTML onwheel event attribute is triggered when the user moves the wheel of the mouse on an HTML element in an HTML document.
Syntax
Following is the syntax −
<tagname onwheel=”script”>Content</tagname>
Let us see an example of HTML onwheel event Attribute −
Example
<!DOCTYPE html>
<html>
<head>
<style>
body {
color: #000;
height: 100vh;
background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;
text-align: center;
padding: 20px;
}
.wheel {
border: 2px solid #fff;
padding: 10px;
}
</style>
</head>
<body>
<h1>HTML onwheel Event Attribute Demo</h1>
<p onwheel='wheelFn()' class='wheel'>This is a paragraph with some dummy content.
This is a paragraph with some dummy content. This is a paragraph with some dummy content.
This is a paragraph with some dummy content. This is a paragraph with some dummy content.
This is a paragraph with some dummy content. This is a paragraph with some dummy content.
This is a paragraph with some dummy content.</p>
<p>Move the wheel of the mouse up or down on above paragraph</p>
<script>
function wheelFn() {
document.body.style.background = "linear-gradient(45deg, #8BC6EC 0%, #9599E2 100%) no-repeat";
document.body.style.color = "#fff";
}
</script>
</body>
</html>Output

Now move the mouse wheel up or down on paragraph element to observe how onwheel event attribute works.
