6 Reasons Why JavaScript’s Async/Await Blows Promises Away (Tutorial)
Mostafa Gaafar

chaining async functions is fine if that is the functionality you are looking for, but calling 2 or 3 promises at once and then calling promise.all(promises) will be faster because all your promises will be running async instead of synchronously. in this scenario you could have both ajax requests running at the same time. and return when both have finished. this is not always what you want but would be faster in this scenario.

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