JQuery - Giới thiệu JQuery
Văn bản HTML chứa JQuery
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>My First jQuery Application</title>
<link rel="stylesheet" type="text/css" href="/examples/css/style.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
</head>
<body>
<h1>Hello, World!</h1>
</body>
</html>
