What are some advanced features of Express.js?

What are some advanced features of Express.js?

Express.js offers several advanced features like middleware, routing, error handling, and template engines.

Can you explain how middleware works in Express?

Middleware in Express is a function that has access to the request, response, and next middleware function. It can modify the request and response objects, end the request-response cycle, or call the next middleware.

What about error handling in Express?

Error handling in Express can be done using middleware functions that take four arguments. You can define custom error handlers to manage different types of errors.

How do I implement a template engine with Express?

To implement a template engine, you need to install a templating library like EJS or Pug, set it up in your Express app, and then render views using the engine.