How do I use Axios interceptors in my application?

How do I use Axios interceptors in my application?

Axios interceptors allow you to intercept requests or responses before they are handled by then or catch. You can use them to modify requests, add headers, or handle errors globally.

Can you show me a code example of setting up an interceptor?

Sure! Here's a simple example:

import axios from 'axios';

// Add a request interceptor
axios.interceptors.request.use(function (config) {
    // Do something before request is sent
    config.headers['Authorization'] = 'Bearer token';
    return config;
}, function (error) {
    // Do something with request error
    return Promise.reject(error);
});

// Add a response interceptor
axios.interceptors.response.use(function (response) {
    // Any status code that lie within the range of 2xx cause this function to trigger
    return response;
}, function (error) {
    // Any status codes that falls outside the range of 2xx cause this function to trigger
    return Promise.reject(error);
});

This sets up a request interceptor to add an authorization token and a response interceptor to handle errors.

What if I want to remove an interceptor later?

You can remove an interceptor by keeping track of its ID when you add it. Here's how you can do that:

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

// To remove it later
axios.interceptors.request.eject(myInterceptor);