How can I enable CORS and logging in my Express.js API?

How can I enable CORS and logging in my Express.js API?

To enable CORS in your Express.js API, you can use the 'cors' middleware. First, install it using npm: npm install cors. Then, require it in your app and use it as middleware.

Can you show me a code example?

Sure! Here's a simple example:

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

app.use(cors()); // Enable CORS for all routes

app.get('/api/data', (req, res) => {
    res.json({ message: 'Hello World' });
});

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

What about logging requests?

You can use the 'morgan' middleware for logging. Install it with npm install morgan and add it to your app like this:

const morgan = require('morgan');
app.use(morgan('combined')); // Logs requests in Apache combined format