index.html

<script src="Scripts/jquery-1.6.4.min.js"></script>
<script src="Scripts/jquery.signalR-2.2.0.min.js"></script>
<script src="signalr/hubs"></script>
<script type="text/javascript">
    $(function () {
        $.connection.hub.url = "/signalr";
        var chat = $.connection.chatHub;

        chat.client.addMessage = function (message) {
            $('#messages').append($('<li>').text(message));
        };

        $('#send-button').click(function () {
            var message = $('#text-message').val();
            chat.server.send(message);

            $('#text-message').val("")
            return false;
        });
    });
</script>