jQuery addClass example
Change class name on click in jQuery
by aidankirrane
HTML
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
document.body.style.backgroundColor = "#FF69B4";
});
</script>
</head>
<body>
<p>Move the mouse pointer on the page to change the background color.</p>
</body>
</html>