installing express code example

Example 1: install express

$ npm install express --save

Example 2: install express globally

$ npm install express --no-save

Example 3: install express

npm i express

Example 4: express js

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 5: express install

$ npx express-generator