How can I use AbortController for advanced use cases in JavaScript?

How can I use AbortController for advanced use cases in JavaScript?

AbortController is a powerful tool for managing asynchronous operations in JavaScript. It allows you to abort fetch requests or other asynchronous tasks. For advanced use cases, you can combine it with Promises and async/await to handle multiple requests efficiently.

Can you give me an example of aborting multiple fetch requests?

Sure! You can create an instance of AbortController and pass its signal to multiple fetch requests. If you need to abort them, just call controller.abort(). Here's a quick example:

const controller = new AbortController();
const signal = controller.signal;

const fetch1 = fetch('https://api.example.com/data1', { signal });
const fetch2 = fetch('https://api.example.com/data2', { signal });

// Abort both requests after 1 second
setTimeout(() => controller.abort(), 1000);

What happens if I abort a fetch request?

If you abort a fetch request, it will reject the promise with an error of type 'AbortError'. You can catch this error to handle the abort gracefully.

Are there any limitations to using AbortController?

Yes, one limitation is that you can only abort requests that support the AbortController, like fetch. Also, once a controller is aborted, it cannot be reused.