How can I implement authentication in my Express.js app using middleware?
You can implement authentication in your Express.js app by using middleware functions that check user credentials before allowing access to certain routes.
What libraries do you recommend for handling authentication?
I recommend using libraries like Passport.js for authentication strategies and bcrypt for hashing passwords.
Can you show me a simple example of middleware for authentication?
Sure! Here's a basic example:
function authMiddleware(req, res, next) {
const token = req.headers['authorization'];
if (token) {
// Verify token logic here
next(); // Proceed to the next middleware
} else {
res.status(401).send('Unauthorized');
}
}
This middleware checks for an authorization token in the request headers.
How do I integrate this middleware into my routes?
You can use the middleware in your routes like this:
app.get('/protected', authMiddleware, (req, res) => {
res.send('This is a protected route!');
});
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