append() method is used to add something in the content, like in paragraph etc.
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<p>My Name is: </p>
<script>
$("p").append("<b>Mahak Gupta</b>");
</script>
</body>
</html>
Output: