What is `AbortController` and how is it used with `fetch()`?

Question

JavaScript Developer — Hard

What is `AbortController` and how is it used with `fetch()`?

Accepted Answer

`AbortController` is an interface that creates an `AbortSignal` for cancelling network requests. When `controller.abort()` is called, the `fetch()` request is rejected with an `AbortError`, allowing for the cancellation of ongoing network operations.