expressjsHow can I use Express.js and Node.js together to create a web application?

Express.js and Node.js can be used together to create a web application by writing server-side logic in JavaScript.

The following example code shows how to use Express.js and Node.js together to create a simple web application.

// Import Express.js
const express = require('express');

// Create an Express.js app
const app = express();

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

// Start the server
app.listen(3000, () => {
  console.log('Server is running at http://localhost:3000');
});

Output example

Server is running at http://localhost:3000

The code consists of the following parts:

1. Import Express.js: const express = require('express');
2. Create an Express.js app: const app = express();
3. Define a route: app.get('/', (req, res) => { res.send('Hello World!'); });
4. Start the server: app.listen(3000, () => { console.log('Server is running at http://localhost:3000'); });

Helpful links

1. Express.js
2. Node.js

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