Simple Web-Server with NodeJS & Express

nodejs-helloWorld-webServer.js

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

app.get('/', (req, res) => {
    res.send('Hello World')
})

app.listen(3000, (err) => {
    if (err) {
        console.log("Error: ", err)
    } else {
        console.log("Server is up!")
    }
})