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Async · medium

35. AbortController & Request Cancellation

Aborting fetch requests and timeouts.

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`AbortController` allows aborting asynchronous operations such as network requests or event listeners via its `signal`.

js
const controller = new AbortController();
setTimeout(() => controller.abort(), 5000); // 5s timeout
const res = await fetch(url, { signal: controller.signal });

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Check your understanding

  1. 1. What happens to a fetch call when its AbortController aborts?

  2. 2. Can AbortSignal be used to remove event listeners?

  3. 3. How do you create an auto-timeout signal in modern browsers/Node?

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