How to resolve a promise with an array of results from a different promise?

Asked Dec 19 '21 at 19:05

Active Mar 06 '22 at 22:00

Viewed 100 times

I have a promise which is supposed to be resolved with an array. Each element of the resulting array is a result of a lengthy asynchronous operation itself, similar to this:

new Promise(resolve, reject) {
  const arr = [param1, param2, param3];
  const resultArr = [];

  async function foo(param) { return await ... };

  arr.forEach(param) {
    resultArr.push(foo(param));
  }
  
  resolve(resultArr);
}

The code above resolves with an array of unresolved promises, instead of actual values.

edited Mar 06 '22 at 22:00

halfer

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asked Dec 19 '21 at 19:05

sdvnksv

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You seem to be looking for `Promise.all`. No need for `new Promise`. – trincot Dec 19 '21 at 19:08
Use Promise.all() to resolve when your array of promises all resolve – charlietfl Dec 19 '21 at 19:08

How to resolve a promise with an array of results from a different promise?

0 Answers0