// this is example of node.js demo with Express
// let's take another example of HELLO WORLD
const express = require ('express')
const app = express ()
const port = 3000
app.get ('/', (req, res) => res.send ('Hello World!'))
app.listen (port, () => console.log (`Example app listening on port $ {port}!`))
This application begins a server and tunes in on port 3000 for associations. The application reacts with "Hi World!" for solicitations to the root URL (/) or course. For each other way, it will react with a 404 Not Found.
Node.js is an open-source, cross-stage, JavaScript runtime condition that executes JavaScript code outside of a program.