What are the differences between Axios interceptors and middleware?

What are the differences between Axios interceptors and middleware?

Axios interceptors are functions that intercept requests or responses before they are handled by then or catch. Middleware, on the other hand, is a broader concept used in various frameworks to process requests and responses.

Can you give me an example of how to use an Axios interceptor?

Sure! You can add an interceptor like this: axios.interceptors.request.use(config => { config.headers['Authorization'] = 'Bearer token'; return config; }); This adds an Authorization header to every request.

How does middleware work in Express.js?

In Express.js, middleware functions have access to the request and response objects and can modify them or end the request-response cycle. They are used for tasks like logging, authentication, and error handling.

When should I use interceptors over middleware?

Use interceptors when you need to modify requests or responses specifically for Axios. Use middleware for broader application-level processing in frameworks like Express.