<html>
<head>
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(".bg").css("background-image",
"url('CAKE.png')");
});
</script>
</head>
<body
class="bg">
</body>
</html>
