node express chat app code example

Example 1: node express chat app

const app = require('express')();const http = require('http').createServer(app);app.get('/', (req, res) => {  res.send('<h1>Hello world</h1>');});http.listen(3000, () => {  console.log('listening on *:3000');});

Example 2: simple socket.io chat

npm install socket.io