Axios Interceptors: Control Requests and Responses

Intercepting Requests and Responses

Axios interceptors allow you to intercept requests or responses before they are handled by the Axios library. You can transform the request before it is sent or catch and handle the response before it reaches your application.

Benefits of Using Interceptors

Interceptors provide a centralized and reusable way to modify requests or responses. This eliminates the need to duplicate code for token addition or other common tasks. By using interceptors, you can improve the consistency and efficiency of your code.

Example: Adding a Token to Every Request

To add a token to every request made with Axios, you can create an interceptor. This interceptor will automatically attach the token to the request header, ensuring that all subsequent requests are authenticated.

```javascript axios.interceptors.request.use(config => { if (token) { config.headers.Authorization = `Bearer ${token}`; } return config; }); ```