api.js

var express = require('express'),
	Bourne = require('bourne'),
	bodyParser = require('body-parser'),

	db = new Bourne('data.json'),
	router = express.Router();

router
	.use(function (req, res, next){
		if(!req.user) req.user = { id:1 };
		next();
	})

	.use(bodyParser.json())
	.route('/contacts')
		.get(function (req, res){
			db.find({ userId: parserInt(req.user.id,10)}, function (err,data){
				res.json(data)
			});
		})
		.post(function (req,res){
			var contact = req.body;
			contact.userId = req.user.id;

			db.insert(contact, function(err,data){
				res.json(data);

			});
		});
router.
	.param('id', function( req,res,next){
		req.dbQuery = { id: parseInt(req.params.id,10)}
	})
	.route('/contact/:id')
		.get(function (req,res){
			db.findOne(req.dbQuery, function(err,data){
				res.json(data);
			});
		})
		.put(function (req, res){
			var contact = req.body;
			delete contact.$promise;
			delete contact.$resolved;
			db.update(req.dbQuery,contact, function(err, data){
				res.json(data[0]);
			});
		})
		.delete(function (req, res){
			db.delete(req.dbQuery,function(){
				res.json(null);
			});
		});

module.exports = router;

server.js

var express = require('express'),
	api = require('./api'),
	app = express();

app
	.use(express.static('./public'))
	.use('/api',api)
	.get('*', function (req, res) {
		res.sendfile('public/main.html');
	})
	.listen(3000);