How can you create a RESTful API using Express.js?

To create a RESTful API with Express, you define routes for different HTTP methods (GET, POST, PUT, DELETE) and use middleware to handle requests. Example:

const express = require('express');
const app = express();
app.use(express.json());

app.get('/api/users', (req, res) => {
  // Fetch and return users
  res.json([{ id: 1, name: 'John Doe' }]);
});

app.post('/api/users', (req, res) => {
  // Create a new user
  res.status(201).json(req.body);
});

app.listen(3000, () => console.log('API running on http://localhost:3000'));

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