submit_one_message_test.html

<!DOCTYPE html>
<html>
<head>
 <script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
 <title>COMP4021 Chat Room</title>
</head>

<body>
    <h2>COMP4021 Chat Room</h2>

    <form method="get" action="https://cgi.cse.ust.hk/~rossiter/cgi-bin/4021_chatroom_demo/addChatroomMessage.php">
        <p>Your chat room name: <input type="text" name="chatroomname"></p>
        <p>Message: <input type="text" name="chatroommessage"></p>
	<input type="submit">
    </form>

</body>
</html>