expressjsHow can I create a web application using Express.js?

Creating a web application using Express.js is a straightforward process.

1. Install Express.js by running npm install express
2. Create a JavaScript file, for example app.js
3. Require Express.js in the file with const express = require('express')
4. Create an Express.js application by running const app = express()
5. Define routes for the application with app.get() and app.post()
6. Start the server with app.listen()
7. Test the application by visiting the URL specified in app.listen()

Example code

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

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

app.listen(3000, () => {
  console.log('Server started on port 3000')
})

Output example

Server started on port 3000

Helpful links

• Express.js Documentation
• Getting Started with Express.js

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