Sample code for Node js REST API

Simplest node js rest api so that if you want to run a local rest API to test something it will be easier.

const express = require(‘express’);
const bodyParser = require(‘body-parser’);
const cors = require(‘cors’);
const app = express();
const port = 3000;
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
let users = {
 1: {
 id: ‘1’,
 username: ‘Robin Wieruch’,
 },
 2: {
 id: ‘2’,
 username: ‘Dave Davids’,
 },
 };
 
 let messages = {
 1: {
 id: ‘1’,
 text: ‘Hello World’,
 userId: ‘1’,
 },
 2: {
 id: ‘2’,
 text: ‘By World’,
 userId: ‘2’,
 },
 };
app.use(cors());

app.get(‘/users’, (req, res) => {
 console.log(‘getting all the users ‘);
 return res.send(Object.values(users));
 });
 app.get(‘/users/:userId’, (req, res) => {
 console.log(‘getting single user ‘);
 return res.send(users[req.params.userId]);
 });

 app.post(‘/messages’, (req, res) => {
 //const id = uuidv4();
 const id =44;
 const message = {
 id,
 text: req.body.text,
 };
 
 messages[id] = message;
 
 console.log(“message received is “+message.id);
 console.log(“message received in post request “+message.text);
 return res.send(message);
 });
app.listen(port, () => console.log(`Hello world app listening on port ${port}!`));