Promise.all() Function in JavaScript - Aggregate multiple promises!

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Finally someone explains promise.all without all the waffle. Clear. concise and to the point with some added bonuses on JSON parsing in there.

Gollumfili

This is immensely helpful when in need to implement parallelism. Thank you for the video!

BrunoAlcantara-xd

Congratulations! It's a good explanation of Promise.all()!

mhcostapimenta

Love these concise videos. Keep it up! 🧨

wianll

The reason for using Promise.all() is because you want to resolve actual Promises. The values you first resolved from promised.all() are just an already resolved array of objects, NOT Promises. And the reason that you gave to use Promise.all() on an array of ojects was to parse the values, NO, the actual parsing is done by array.map(). You shouldn't use Promise.all() on the array of objects. If you want to return a Promise containing resolved values you should be returning in your inner then. The reason why your code didn't throw an error is only because Promise.all() accepts an iterable such as an array. It's like a lucky get away with a loophole at best and invoking a built in method for the wrong reason.

yamgemy

Hi, thank you for the explanations. We have a problem with promise.all method: when we create a short link/permalink of the produced content and list of the entries (e.g. Entry1, Entry2, Entry3), then the order of the entries is listed in a different way (e.g.Entry3, Entry1, Entry2). Is there a way to fix the first order as a stable order when we produce the permalink? Thanks..

davutlu

Jquery when and javascript promise.all is same?

TrainExplore

Brother, I have this scenario which is needed to be done, I wanna run 10 different APIS with no interconnection requirements between them, But If i put it under a for loop, Then It takes a significant amount of time running due to its sequential pattern. I wanna make them run paralelly, Is there a way to do it please ?

sunguru

can anyone help me please? how can i do it with XMLHttpRequest and promiseAll ? (with 2 sources, i mean requests)

ai_worldforpeople

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