Bootstrap Disable Enable button jQuery

<html>
<head>
<title>Bootstrap Grid</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
<script type="text/javascript">
function disable(){
$("#myBtn").attr("disabled", true);
$('#myBtn').addClass('disabled');
}
</script>
</head>
<body>


<input type="button" class="btn btn-danger" onclick="disable()" id="myBtn" value="Disable Button" />

</body>
</html>