This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
Sometimes we need to wait for a promise to resolve, and we also need to wait for another promise to resolve.
Something like this:
const values = await store.getAll()
const keys = await store.getAllKeys()
This works but it’s not ideal. First we’re waiting for the first call to be resolved, then we start the second.
I want to start both first, then I want to wait until both finished. Not a millisecond more.
The solution is to wrap all in a await Promise.all() call, like this:
const data = await Promise.all([await store.getAll(), await store.getAllKeys()])
Once this is resolved, we can access the first call value using data[0] and the second call return value with data[1].
This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
flaviocopes.com | Sciencx (2021-02-05T05:00:00+00:00) Wait for all promises to resolve in JavaScript. Retrieved from https://www.scien.cx/2021/02/05/wait-for-all-promises-to-resolve-in-javascript/
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