feesta/app.js

## app.js
var express = require("express"),
    http = require("http");

var app = express();
var server = http.createServer(app);
var io = require("socket.io").listen(server);

server.listen(80);

app.get("/", function (req, res) {
    res.sendfile(__dirname + "/index.html");
});

io.sockets.on("connection", function (socket) {
    socket.emit("from server", { message: "Welcome to Jeff's Chat Room!" });
    sendAll({online: Object.keys(socket.manager.open).length});
    socket.on("from client", function (data) {
    console.log("received: ", data, " from ", socket.store.id);

    if (data.message)
        sendAll(data, socket.id);
    });

    socket.on("disconnect", function(reason) {
        sendAll({online: Object.keys(socket.manager.open).length});
    });
});

function sendAll(message, user) {
    for (var socket in io.sockets.sockets) {
        if (socket != user)
            io.sockets.sockets[socket].emit("from server", message);
    }
}

## index.html
<!DOCTYPE html>
<html>
<head>
<title>Chat Room</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />

<script src="/socket.io/socket.io.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">
var socket = io.connect('/');
socket.on('from server', function (data) {
    console.log(data);
    if (data.message) {
        //document.write(data.message);
        $("#messages").append("<div>" + data.message + "</div>");
    }
    if (data.online) {
        console.info("online:", data.online);
        $("#onlinecount").html(data.online + " online");
    }
});

$(function(){
    $("#ui button").on("click", function(e){
        var message = $("#textinput").val();
        socket.emit('from client', { message: message });
        $("#textinput").val("").focus();
        $("#messages").append("<div class='ownmessage'>" + message + "</div>");
        e.preventDefault();
    });
    $("#textinput").focus();
});
</script>

<style>
    form {display:inline-block;}
    body {font-family:sans-serif;}

    #onlinecount {font-size:small; color:#999;}
    #messages {color:#444; font-size:11px;}
    #messages .ownmessage {font-weight:bold;}
</style>

</head>

<body>
    <div id="ui">
        <form>
            <input id="textinput" placeholder="chat box" />
            <button>send</button>
        </form>
        <span id="onlinecount">1 online</span>
    </div>
    <div id="messages"></div>

</body>
</html>

## package.json
{
    "name": "feesta-chatroom",
    "description": "Basic NodeJS/Socket.IO chatroom",
    "version": "0.0.1",
    "private": true,
    "dependencies": {
        "express": "3.x",
        "socket.io": "*"
    }
}
	var express = require("express"),
	http = require("http");

	var app = express();
	var server = http.createServer(app);
	var io = require("socket.io").listen(server);

	server.listen(80);

	app.get("/", function (req, res) {
	res.sendfile(__dirname + "/index.html");
	});

	io.sockets.on("connection", function (socket) {
	socket.emit("from server", { message: "Welcome to Jeff's Chat Room!" });
	sendAll({online: Object.keys(socket.manager.open).length});
	socket.on("from client", function (data) {
	console.log("received: ", data, " from ", socket.store.id);

	if (data.message)
	sendAll(data, socket.id);
	});

	socket.on("disconnect", function(reason) {
	sendAll({online: Object.keys(socket.manager.open).length});
	});
	});

	function sendAll(message, user) {
	for (var socket in io.sockets.sockets) {
	if (socket != user)
	io.sockets.sockets[socket].emit("from server", message);
	}
	}
	<!DOCTYPE html>
	<html>
	<head>
	<title>Chat Room</title>
	<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />

	<script src="/socket.io/socket.io.js"></script>
	<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
	<script type="text/javascript">
	var socket = io.connect('/');
	socket.on('from server', function (data) {
	console.log(data);
	if (data.message) {
	//document.write(data.message);
	$("#messages").append("<div>" + data.message + "</div>");
	}
	if (data.online) {
	console.info("online:", data.online);
	$("#onlinecount").html(data.online + " online");
	}
	});

	$(function(){
	$("#ui button").on("click", function(e){
	var message = $("#textinput").val();
	socket.emit('from client', { message: message });
	$("#textinput").val("").focus();
	$("#messages").append("<div class='ownmessage'>" + message + "</div>");
	e.preventDefault();
	});
	$("#textinput").focus();
	});
	</script>

	<style>
	form {display:inline-block;}
	body {font-family:sans-serif;}

	#onlinecount {font-size:small; color:#999;}
	#messages {color:#444; font-size:11px;}
	#messages .ownmessage {font-weight:bold;}
	</style>

	</head>

	<body>
	<div id="ui">
	<form>
	<input id="textinput" placeholder="chat box" />
	<button>send</button>
	</form>
	<span id="onlinecount">1 online</span>
	</div>
	<div id="messages"></div>

	</body>
	</html>
	{
	"name": "feesta-chatroom",
	"description": "Basic NodeJS/Socket.IO chatroom",
	"version": "0.0.1",
	"private": true,
	"dependencies": {
	"express": "3.x",
	"socket.io": "*"
	}
	}