Saving data

For our next step, we'll persist data in a local data store, which will be a simple local JSON file:

1. Go ahead and quit Express with Ctrl + C. Let's install an easy module that saves data in a local store: npm install data-store.

2. Let's modify our routes to use it, like so:

var express = require('express');
var router = express.Router();
 
const store = require('data-store')({ path: process.cwd() + '/data.json' });
 
/* GET home page. */
router.get('/', function(req, res, next) {
 res.render('index', { title: 'Express', data: 
 JSON.stringify(store.get()) });
});
 
/* GET sub page. */
router.get('/hello', function(req, res, next) {
 res.render('index', { title: 'Hello! This is a route!' });
});
 
/* POST to sub page. */
router.post('/hello', function(req, res) {
 store.set('message', { message: `${req.body.message} at ${Date.now()}` })
 
 res.set('Content-Type...