<!DOCTYPE html>
<html>
<head>
<title>jQuery Element Selection</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<div class="content">Hello World</div>
<button id="change-text">Change Text</button>
<script>
$(document).ready(function(){
$("#change-text").click(function(){
$(".content").text("Hello jQuery");
});
});
</script>
</body>
</html>