var express = require('express'); var app = express(); var cors = require('cors'); app.get('/', function(req, res) { res.send('Hello World!'); }); app.use(cors()); app.use(express.json()) // for parsing application/json app.use(express.urlencoded({ extended: true })) app.use(require('./routes/index.js')) app.listen(3000, function() { console.log('Example app listening on port 3000!'); });