What are Axios interceptors and how do they work?

What are Axios interceptors and how do they work?

Axios interceptors are functions that Axios calls for every request or response. They allow you to modify requests or responses before they are handled by then or catch.

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

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

What are some common use cases for interceptors?

Common use cases include adding authentication tokens, logging requests, handling errors globally, and modifying request/response data.

Are there any downsides to using interceptors?

Yes, overusing interceptors can lead to complex code and make debugging harder. It's important to use them judiciously.