Facebook Pixel
async/await Error Handling Best Practices in JavaScript

How do you propagate an error in async/await in JavaScript?

The answer

Re-throw the error in the catch block: catch (err) { console.error(err); throw err; }. The caller can catch it with their own try/catch.

More FAQs in async/await Error Handling Best Practices in JavaScript

Use try/catch around the await calls. If any await rejects, the catch block runs with the rejection reason. try/catch also catches thrown errors inside the try block.

Assign a fallback value in the catch block, then continue: try { data = await fetch(); } catch { data = fallback; } render(data);. The function continues with the fallback.

Yes. catch {} with no logging or handling hides bugs. At minimum, log the error: catch (err) { console.error(err); }. Silent failures make debugging very hard.

Still have questions?

Browse all our FAQs or reach out to our support team

Want to upskill yourself?

Your learning library

Small steps. Big possibilities.

Find your next course. Build something great.

Our courses are taking a Coffee break, but your curiosity shouldn't. Stay engaged with namastedev linkedin, youtube, discord and other resources while you wait.

0

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.

Success

Please Login.