What are fetch request timeouts and how do they work?

What are fetch request timeouts and how do they work?

Fetch request timeouts are limits set on how long a fetch request can take before it is aborted. They help manage long-running requests.

How can I implement a timeout for a fetch request in JavaScript?

You can implement a timeout using the Promise.race method to race the fetch request against a timeout promise.

Can you show me an example of that?

Sure! Here's a simple example:

const fetchWithTimeout = (url, options, timeout = 5000) => {
  return Promise.race([
    fetch(url, options),
    new Promise((_, reject) => setTimeout(() => reject(new Error('Timeout')), timeout))
  ]);
};

This will reject the fetch request if it takes longer than the specified timeout.

What happens if the fetch request times out?

If the fetch request times out, it will reject the promise, and you can handle the error in your catch block.