expressjsHow do I use Express.js methods to develop a web application?

Express.js is a web application framework for Node.js that allows you to easily create web applications with minimal coding. You can use Express.js methods to develop a web application by following these steps:

1. Install Express.js by running npm install express in the command line.
2. Create an Express.js application by running const app = express() in the code.
3. Define routes with app.get() or app.post() methods.
4. Use the app.use() method to define middleware.
5. Use the app.listen() method to start the server.

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

Links:

• Express.js Documentation
• Node.js Documentation

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