Javascript Promise chaining

Hi there here is the third post of Javascript/NodeJs callback.

We have an async task with Promise:

[gist https://gist.github.com/vanduc1102/d7c84cd605edf8d0faf1fb620556ba5f]

Create tasks function:

[gist https://gist.github.com/vanduc1102/d07c13973a4c3cda3973b12f6619f1b9]

Promise.all

execute all the promises at the same times, and resolve when all of the promises resolved

[gist https://gist.github.com/vanduc1102/8b85ee8ce42d23fb49ae9d165bb19794]

and reject when any of the Promise was rejected:

[gist https://gist.github.com/vanduc1102/09a90b3923ca1ba3d5d72630958e950a]

Promise.race

The Promise.race(iterable) method returns a promise that resolves or rejects as soon as one of the promises in the iterable resolves or rejects, with the value or reason from that promise.

[gist https://gist.github.com/vanduc1102/21ff8e6900ebfb1824c965fb1d654291]

Sequence Promises

Sometimes we need to do the jobs in sequences.
[gist https://gist.github.com/vanduc1102/5264a38f20f54d04360a191e53c5e7e3]

For promise functions with multiple parameters

[gist https://gist.github.com/vanduc1102/b15f3f2ff5733ebbc467464e96cdf2ea]

 

Online editor

https://repl.it/@vanduc1102/sequence-promises