cat_server.js

var express = require('express');
var app = express();
var bodyParser = require('body-parser');

// Connecting to mongodb using mongoose
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/cats');

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extend: true
}));

// requiring a path for cats
var cats = require('./routes/cat.js')(app);

// app.get('/', function(req, res){
//     // res.send('Hello World!');
//     res.json({hello: 'hi'});
// });

var server = app.listen(3000, function() {
    console.log('Server running at http://127.0.0.1:3000/');
});

// var http = require('http');
//
// http.createServer(function(req, res){
//     res.writeHead(200, {
//         'Content-Type': 'text/plain'
//     });
//     res.end('Hello World\n');
// }).listen(3000, '127.0.0.1');
//
// console.log('Server running at http://127.0.0.1:3000/');