How to implement 'Who is typing' feature via SignalR?

Question

Basically I am implementing a SignalR chat in my website. I can already send messages to all connected users and now I hope to add the "who is typing" feature. I'm trying to add it in the $('#message').keypress function and it works but now I can't send messages to users.

What did I do wrong?

After remove $('#message').keypress can send message

Didn't remove $('#message').keypress cannot send message

My html {

<input type="text" id="message" />
<input type="button" id="sendmessage" value="Send" class="btn btn-default" />
<input type="hidden" id="displayname" />
<label id="isTyping" />
<ul id="discussion"></ul>

}

Below is the script:

<!--SignalR script to update the chat page and send messages.-->
<script type="text/javascript">
    $(function () {
        // Reference the auto-generated proxy for the hub.
        var chat = $.connection.chatHub;
        // Create a function that the hub can call back to display messages.

        chat.client.broadcastMessage = function (name, message) {
            $('#discussion').append('<li><strong>' + name
                + '</strong>:&nbsp;&nbsp;' + message + '</li>');
        };

        chat.client.sayWhoIsTyping = function (name) {
            $('#isTyping').html('<em>' + name + ' is typing...</em>');
            setTimeout(function () {
                $('#isTyping').html('&nbsp;');
            }, 5000);
        };

        // Get the user name and store it to prepend to messages.
        $('#displayname').val(prompt('Enter your name:', ''));
        // Set initial focus to message input box.
        $('#message').focus();

        // Start the connection.
        $.connection.hub.start().done(function () {

            $('#sendmessage').click(function () {
                var encodedName = $('<div />').text($('#displayname').val()).html();
                var encodedMsg = $('<div />').text($('#message').val()).html();
                chat.server.sendPublic(encodedName, encodedMsg);
                $('#message').val('').focus();
            });

            $('#message').keypress(function (e) {
                if (e.which == 13) {
                    var encodedName = $('<div />').text($('#displayname').val()).html();
                    var encodedMsg = $('<div />').text($('#message').val()).html();
                    chat.server.sendPublic(encodedName, encodedMsg);
                    $('#message').val('').focus();
                } else {
                    var encodedName = $('<div />').text($('#displayname').val()).html();
                    chat.server.isTyping(encodedName);
                }
            });
        });



    // This optional function html-encodes messages for display in the page.
    function htmlEncode(value) {
        var encodedValue = $('<div />').text(value).html();
        return encodedValue;
    }

Below is my Hub code:

    public void SendPublic(string name, string message)
    {
        // Call the addNewMessageToPage method to update clients
        Clients.All.broadcastMessage(name, message);
    }

    public void IsTyping(string name)
    {
        SayWhoIsTyping(name);
    }

    public void SayWhoIsTyping(string name)
    {
        IHubContext context = GlobalHost.ConnectionManager.GetHubContext<ChatHub>();
        context.Clients.All.sayWhoIsTyping(name);
    }

Answer 1

in the hub class Server Side

public void UserTyping(groupName)
{
    var userName = "Get current user's name";
    //client method here
    Clients.OthersInGroup(groupName).OtherUserIsTyping(userName);
}

Client Side

<textbox id="message"></textbox>
<span id="userTyping"></span>

var keyPressCount = 0;

$("#message").on("keypress", function () {
    if (e.which == 13) {
       $('#sendmessage').trigger('click');
    } 
    else {
       // Don't want to call the server on every keypress
       if (keyPressCount++ % 10 == 0) {
        chatHub.server.userTyping("myChatGroup");
       }
    }
});

chatHub.client.OtherUserIsTyping = function (userName) {
    $("#userTyping").html(userName + " is typing...");
};