Hello World! In jQuery
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
</script>
<script>
$(document).ready(function(){
$("#label").text("Hello world!");
});
</script>
</head>
<body>
<p>This message is brought to you by jQuery</p>
<p id="label"></p>
</body>
</html>