How does middleware order affect my Node.js Express application?

Can you explain how middleware order affects my Node.js Express application?

Sure! In Express, middleware functions are executed in the order they are defined. This means that the sequence can impact how requests are processed.

What happens if I place error-handling middleware at the top?

If you place error-handling middleware at the top, it won't catch errors from other middleware or routes defined after it. It should be placed at the end.

Can you give me an example of correct middleware ordering?

Absolutely! A common order is: first, application-level middleware (like body parsers), then route handlers, and finally error-handling middleware.

What are some common mistakes with middleware ordering?

Common mistakes include placing error-handling middleware too early, not using next() properly, or forgetting to define middleware for specific routes.