mandatory - Node.js needs to be installed

npm i express

file: server.js

const express = require('express')
const app = express()

app.get('/', (req,res) => {
  res.send('hello world')
})

app.listen(5000, () => console.log('Server running on Port 5000'))

Middleware Functions have access to the request and response object. Express has built-in Middleware, but there are also 3rd-party packages as well.

Run Development Server

node server.js