What are Axios interceptors and how do I use them?

What are Axios interceptors and how do I use them?

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 show me an example of how to set up an interceptor?

Sure! You can set up a request interceptor like this:

axios.interceptors.request.use(config => {
    // Do something before request is sent
    return config;
}, error => {
    // Do something with request error
    return Promise.reject(error);
});

What about response interceptors?

Response interceptors can be set up similarly:

axios.interceptors.response.use(response => {
    // Do something with response data
    return response;
}, error => {
    // Handle response error
    return Promise.reject(error);
});

How can I remove an interceptor?

You can remove an interceptor by storing its ID when you add it, and then using that ID to eject it:

const myInterceptor = axios.interceptors.request.use(...);
axios.interceptors.request.eject(myInterceptor);