<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
var $x = $("div");
$x.prop("color", "FF0000");
$x.append("The color property has the following value: " + $x.prop("color"));
$x.removeProp("color");
$x.append("<br>Now the color property has the following value: " + $x.prop("color"));
});
});
</script>
</head>
<body>
<button>Add and remove a property</button><br><br>
<div></div>
</body>
</html>