How would you run this async loop in sequence?

programming web dev
1

Consider this snippet.

ids.forEach(async (id) => {
  await fetchUser(id);
});
console.log('done');

Why is this not sequential, and what simple loop should replace it.

Sarah

2

forEach doesn’t await the async callback, so it fires all the fetches and done logs immediately.

WaffleFries

3

Use for...of with await if you want strict sequence, though if order does not matter Promise.all is usually faster for something like 20 user fetches.

Ellen