Simple Data Logger in Node.Js

bytelogger.js

var http = require("http"); //HTTP Server
var url = require("url"); // URL Handling
var fs = require('fs'); // Filesystem Access (writing files)

var express = require('express'), //App Framework (similar to web.py abstraction)
    app = express.createServer();
	app.use(express.bodyParser());
	app.use(app.router);
io = require('socket.io').listen(app); //Socket Creations
io.set('log level', 1)

var serialport = require("serialport") //Serial Port Creation
var SerialPort = require("serialport").SerialPort 
var serialPort = new SerialPort("/dev/tty.usbserial",{baudrate:2400});


app.use("/socket.io", express.static(__dirname + '/node_modules/socket.io/lib'));
app.get('/', function(req, res){
	indexer = fs.readFileSync('index.html').toString()
    res.send(indexer);
});

app.listen(8888);
console.log('Express server started on port %s', app.address().port);

data_log = []

serialPort.on("data", function (data) {
	data_log.push(data)
	console.log(data)
	io.sockets.emit('new_data',{'mm_data':data})
	if (data_log.length == 14) 
	{
		out = ""
		for (var i = 0; i < data_log.length;i++)
		{
			out += data_log[i].toString().charCodeAt(0)+"  "
		}
		console.log(out)
		data_log = []
		
	}

})