Clicker game - HTML + jQuery

<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<body>
<center>Clicks: <a id="numberOfClicks">loading</a><br>
<button onClick="clicks+=1;$('#numberOfClicks').text(clicks);">Button</button></center>
<script>
clicks=0;
</script>
</body>
</head>
</html>