The onmouseup event triggers when a mouse button is released.
Example
You can try to run the following code to learn how to work with onmouseup event in JavaScript −
<html>
<head>
<script>
<!--
function sayHello() {
alert("Mouse Up")
}
//-->
</script>
</head>
<body>
<p onmouseup = "sayHello()">This is demo text for mouseup event.</p>
</body>
</html>