using node.js code example
Example 1: node js server
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 at http://localhost:${port}`))
Example 2: what is node.js
Javascript was always a client side language until node.js.
Common server side languages include PHP, Python, Perl, Ruby
and several more. Node enables you to use Javascript server side.
This now means you can have a consistent language both ends
which could not be done prior to Node.
Example 3: run node app locally
// Run this command in your terminal to start your node application.
// Replace the tag with your applications main file name (ex index.js, main.js etc).
// Add alternative a relative or absolute path before the name.
node <filename>.js
Example 4: javascript running at node
const inNode = new Function('try{return this===global;}catch(err){return false;}')();