hi i'm new in nodejs.
var io = require('socket.io').listen(server);
users = [];
connections = [];
server.listen(process.env.PORT || 3000);
console.log('server running....on Pro');
app.get ('/', function(req, res){
res.sendFile(__dirname+'/index.html');
});
io.sockets.on('connections',function(socket){
connections.push(socket);
console.log('connected: %s sockets is connected', connections.length);
//Disconnet function
socket.on('disconnect', function(data){
users.splice(users.indexOf(socket.username),1);
updateUsernames();
connections.splice(connections.indexOf(socket),1);
console.log('Disconneted: %s sockets connected', connections.length);
});
//send messege
socket.on('send massege', function(data){
io.sockets.emit('new massege', {msg: data, user:socket.username});
});
//new user
socket.on('new user', function(data, callback){
callback(true);
socket.username = data;
user.push(socket.username);
updateUsernames();
});
function updateUsernames(){
io.sockets.emit('get users', users);
}
});
<!DOCTYPE html>
<html>
<head>
<title>Simple Chat App By Probhas</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="/socket.io/socket.io.js"></script>
<style>
body{
margin-top: 30px;
}
#messageArea{
display: none;
}
</style>
</head>
<body>
<div class="container">
<div id="userFormArea" class="row">
<div class="col-md-12">
<form id="userForm">
<div class="form-group">
<label>Enter Username</label>
<input class="form-control" id="Username"><br/>
<input type="submit" class="btn btn-primary" value="Login">
</div>
</form>
</div>
</div>
<div id="messageArea" class="row">
<div class="col-md-4"></div>
<div class="well">
<h3>Online Users</h3>
<ul class="list_group" id="users"></ul>
</div>
<div class="col-md-8"></div>
<div class="chat" id="chat"></div>
<form id="messageform">
<div class="form-group">
<label>Enter Your Massege</label>
<textarea class="form-control" id="message"></textarea><br/>
<input type="submit" class="btn btn-primary" value="send Massege">
</div>
</form>
</div>
</div>
<script>
$(function(){
var socket = io.connect();
var $messageform = $('#messageform');
var $message = $('#messageform');
var $chat = $('chat');
var $messageArea = $('#messageArea');
var $userFormArea = $('#userFormArea');
var $userForm = $('#userForm');
var $users = $('#users');
var $Username = $('#Username');
$messageform.submit(function(e){
e.preventDefault();
socket.emit('send massege', $message.val());
$message.val('');
});
socket.on('new massege', function(data){
$chat.append('<div class="well"><strong>'+data.user+'</strong>:'+data.msg+'</div>');
});
$userform.submit(function(e){
e.preventDefault();
socket.emit('new user', $Username.val(),function(data){
if (data){
$userFormArea.hide();
$messageArea.show();
}
});
$Username.val('');
});
socket.on('get users', function(data){
var html = '';
for (i=0; i<data.length; i++){
html += '<li class = "list-group-item">'+data[i]+'</li>';
}
$users.html(html);
});
});
</script>
</body>
</html>
i build a real-time chat application using socket.io, Node.js and Express. i followed the video tutorial i code same as tutorial and the app in running in node server on my localhost. but it don't showing any-output.i think it's can problem with my variable declaration and id in html.but i didn't find the errors till now. here is my server.js file and index.html file
via Probhas Ranjan Chanda 121-35-2
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