JavaScript onwheel Event
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JavaScript onwheel Event
The onwheel
event occurs when the mouse wheel is rolled up or down over an element.
onwheel Event as Attribute
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<div onwheel="myFunction()">
</div>
<p>Div is wheeled <span id="point">0</span> times<p>
<script>
var count = 0;
function myFunction(){
count += 1;
document.getElementById("point").innerHTML = count;
}
</script>
</body>
</html>
Syntax
As Attribute
<element onwheel = "JavaScript">
As Property
object.onwheel = function(){
// code
};
Using Event Listener
object.addEventListener("wheel" , myScript);
onwheel Event as Property
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Just wheel it.</p>
<p>You wheeled for <span id="point">0</span> times.<p>
<script>
var count = 0;
function myFunction(){
count += 1;
document.getElementById("point").innerHTML = count;
}
document.onwheel = myFunction;
</script>
</body>
</html>
Using addEventListener() Method
Note: The addEventListener() method is not supported in Internet Explorer 8 and below.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<div>
</div>
<p>Div is wheeled <span id="point">0</span> times<p>
<script>
var x = document.getElementsByTagName("div")[0];
var count = 0;
function myFunction(){
count += 1;
document.getElementById("point").innerHTML = count;
}
x.addEventListener("wheel", myFunction);
</script>
</body>
</html>
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