arisetyo/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="author" content="Galenic">
    <script src="js/knockout-2.1.0.js"></script>
    <link rel="stylesheet" href="pure-min.css">
    <link rel="stylesheet" href="custom.css">
	<title>Node Showcase</title>
</head>
<body>

<div class="pure-u-1">

	<div class="form">
		<form data-bind="submit: sendinput" class="pure-form">
			<fieldset><input type="text" data-bind="value: myinput" placeholder="enter message"/></fieldset>
		</form>
	</div>

	<div data-bind="foreach: messages">
		<div class="message"><span data-bind="text: message" class="white"></span></div>
	</div>

</div>

<script src="/socket.io/socket.io.js"></script>
<script type="text/javascript">

	function MainViewModel(data) {
		var self = this;
		var socket = io.connect('http://localhost:8070');

		self.messages = ko.observableArray([]);
		self.myinput = ko.observable();

		socket.on('pushdata', function (data) {
			self.messages(data);
		});

		self.sendinput = function(){
			socket.emit('input', { 'message': self.myinput() });
		}
	}

	var vm = new MainViewModel();
	ko.applyBindings(vm);

</script>

</body>
</html>

## server.js
var application_root = __dirname,
  express = require('express'),
	path 	= require("path");

app = express();

var	server = require('http').createServer(app),
	io = require('socket.io').listen(server);

app.configure(function () {
	app.use(express.logger('dev'));
	app.use(express.bodyParser());
	app.use(express.static(path.join(application_root, "public")));
});

var messagesArray = [{ 'message':'welcome to Node showcase' }];

io.sockets.on('connection', function (socket) {

	socket.emit('pushdata', messagesArray);

	socket.on('input', function (data) {
		messagesArray.push(data);
		io.sockets.emit('pushdata', messagesArray);
	});

	socket.on('disconnect', function () {
    	io.sockets.emit('user disconnected');
	});

});

server.listen(8070);
console.log('Node Showcase is listening on port 8070...');
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta name="author" content="Galenic">
	<script src="js/knockout-2.1.0.js"></script>
	<link rel="stylesheet" href="pure-min.css">
	<link rel="stylesheet" href="custom.css">
	<title>Node Showcase</title>
	</head>
	<body>

	<div class="pure-u-1">

	<div class="form">
	<form data-bind="submit: sendinput" class="pure-form">
	<fieldset><input type="text" data-bind="value: myinput" placeholder="enter message"/></fieldset>
	</form>
	</div>

	<div data-bind="foreach: messages">
	<div class="message"><span data-bind="text: message" class="white"></span></div>
	</div>

	</div>

	<script src="/socket.io/socket.io.js"></script>
	<script type="text/javascript">

	function MainViewModel(data) {
	var self = this;
	var socket = io.connect('http://localhost:8070');

	self.messages = ko.observableArray([]);
	self.myinput = ko.observable();

	socket.on('pushdata', function (data) {
	self.messages(data);
	});

	self.sendinput = function(){
	socket.emit('input', { 'message': self.myinput() });
	}
	}

	var vm = new MainViewModel();
	ko.applyBindings(vm);

	</script>

	</body>
	</html>
	var application_root = __dirname,
	express = require('express'),
	path = require("path");

	app = express();

	var server = require('http').createServer(app),
	io = require('socket.io').listen(server);

	app.configure(function () {
	app.use(express.logger('dev'));
	app.use(express.bodyParser());
	app.use(express.static(path.join(application_root, "public")));
	});

	var messagesArray = [{ 'message':'welcome to Node showcase' }];

	io.sockets.on('connection', function (socket) {

	socket.emit('pushdata', messagesArray);

	socket.on('input', function (data) {
	messagesArray.push(data);
	io.sockets.emit('pushdata', messagesArray);
	});

	socket.on('disconnect', function () {
	io.sockets.emit('user disconnected');
	});

	});

	server.listen(8070);
	console.log('Node Showcase is listening on port 8070...');