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  1. $(function () {
  2.     var showChatName = new Boolean(true);
  3.     var previousUsername = '';
  4.     var selectedUsername = 'Admin';
  5.     var chatUsername = window.prompt("Enter Username:", "");
  6.     //
  7.     var usernameList = $('#showUsernames');
  8.     var chatTitleName = $('#chat-title-name');
  9.     var txtMsg = $('#txtmsg');
  10.     var showMessage = $('#messages');
  11.     //
  12.     if (selectedUsername != chatUsername) {
  13.  
  14.     }
  15.  
  16.     txtMsg.focus();
  17.     chatUsername = chatUsername.toLowerCase().replace(/\b[a-z]/g, function (letter) {
  18.         return letter.toUpperCase();
  19.     });
  20.  
  21.     var chat = $.connection.chat; //calling the created class "Chat" (Works, if and only if it implements Hub class)
  22.     //for removing the username who is disconnected from the server
  23.     chat.client.leave = function () {
  24.         //        console.log(user + date);
  25.         //calling the server side method "GetConnectedUsers"
  26.         //The return value of the method is stored in a variable "users"
  27.         chat.server.getConnectedUsers().done(function (users) {
  28.             //clearing the div, to fill it again (over writing)
  29.             usernameList.empty();
  30.             console.log(users.length);
  31.             //calling each username stored in a static dictionary on server side using for loop
  32.             for (var i = 0; i < users.length; ++i) {
  33.                 usernameList.append('<li>' + users[i].Name + '</li>');
  34.             }
  35.         });
  36.     };
  37.  
  38.  
  39.  
  40.     //On key press "Enter"
  41.     txtMsg.keypress(function (e) {
  42.         console.log("keypress");
  43.         if (e.which == 13) {
  44.             //prevent default operations of the "Enter" Key
  45.             e.preventDefault();
  46.             //Comparing if the last message entered username is same as the current username
  47.             //if the previous username and current username are same then dont show the username again.
  48.             if ((!previousUsername.length == 0) && (previousUsername == chatUsername)) {
  49.                 showChatName = false;
  50.             }
  51.             else { showChatName = true; }
  52.  
  53.             var message = txtMsg.val();
  54.             if (message.replace(/\s/g, "").length !== 0) {
  55.                 //calls the server side method if and only if there is some valid info to send
  56.                 chat.server.send(chatUsername, selectedUsername, txtMsg.val(), showChatName);
  57.             }
  58.             //emptying the textbox once the message is sent to server
  59.             txtMsg.val('');
  60.  
  61.         }
  62.     });
  63.  
  64.     // Declare a function on the chat hub so the server can invoke it          
  65.     chat.client.addMessage = function (chatUsername, message, showChatName) {
  66.         if (showChatName) {
  67.             //To show Username with the typed message
  68.             showMessage.append('<b>' + chatUsername + '</b>' + ':&nbsp;' + message + '</br>');
  69.         }
  70.         else {
  71.             //To show only typed message, not the username
  72.             showMessage.append('&nbsp;&nbsp;' + message + '</br>');
  73.         }
  74.         previousUsername = chatUsername;
  75.         //To keep scroll always bottom
  76.         showMessage.scrollTop(showMessage[0].scrollHeight);
  77.     };
  78.  
  79.     //Invoking the hub class
  80.     $.connection.hub.start().done(function () {
  81.         //calling the server side method just after invoking the hub class
  82.         chat.server.joined(chatUsername);
  83.     });
  84.  
  85.     //Method to show the usernames of the connected users in a div of id -- showUsernames
  86.     chat.client.joins = function () {
  87.         //calling the server side method "GetConnectedUsers"
  88.         //The return value of the method is stored in a variable "users"
  89.         chat.server.getConnectedUsers().done(function (users) {
  90.             //clearing the div, to fill it again (over writing)
  91.             usernameList.empty();
  92.             //calling each username stored in a static dictionary on server side using for loop
  93.             for (var i = 0; i < users.length; ++i) {
  94.                 usernameList.append('<li>' + users[i].Name + '</li>');
  95.             }
  96.         });
  97.     };
  98.  
  99.     $('ul#showUsernames li').on('click', function () {
  100.         selectedUsername = $(this).text();
  101.         if (selectedUsername != chatUsername) {
  102.             chatTitleName.text("Chat between " + chatUsername + " and " + selectedUsername);
  103.         }
  104.     });
  105. });
  106.  
Runtime error #stdin #stdout 0.35s 213888KB
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https://ideone.com/R7jKAb
language:
JavaScript (rhino 1.7.9)
created:
12 years ago
visibility:
secret

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