Question 1

How do I cancel a request in Axios?

Accepted Answer

Use the modern AbortController API by passing a signal in the request config. Axios also supports the deprecated CancelToken, but AbortController is recommended for new projects to avoid legacy issues.

Question 2

Axios vs fetch: which is better for my project?

Accepted Answer

Axios is better for complex applications needing interceptors, automatic JSON handling, and cross-platform consistency. Fetch is lighter and built-in, suitable for simple requests where bundle size is critical.

Question 3

How to handle errors with Axios in async/await?

Accepted Answer

Wrap axios calls in try-catch blocks; errors include response data, status codes, and config details. Use axios.isAxiosError() to distinguish Axios errors from other exceptions for precise handling.

Question 4

Can I use Axios with TypeScript without extra setup?

Accepted Answer

Yes, Axios has built-in TypeScript definitions, providing full type support for requests, responses, and configurations out of the box, including generics for response data typing.

Question 5

How to upload files using Axios in a browser?

Accepted Answer

Create a FormData object, append the file, and send it via POST. Axios automatically sets the Content-Type to multipart/form-data when FormData is used, simplifying file upload implementations.

Question 6

What's the best way to set up authentication interceptors?

Accepted Answer

Use axios.interceptors.request.use() to add tokens to headers globally. For dynamic tokens, store them in a closure or state and update the interceptor logic as needed for secure API calls.

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