<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
var x = 0;
$("p").click(function(event){
$("p").animate({fontSize: "+=5px"
});
x++;
if (x >= 2) {
$(this).off(event);
}
});
});
</script>
</head>
<body>
<p>Click this p element to increase its size. The size can only be increased 2 times.</p>
</body>
</html>