How to call a method multiple times (dynamically) in asynchronous way in node.js

Question

I am writing a script in node.js where I have method with a single parameter - id.

funcToCall(id)
{
    // some code ...

    returns a promise
}

var ids = [ list of ids] // input occurs dynamically

I will get a list of id's as input and I need to call the method with each input id in an asynchronous way. I have found a way to handle Promise.all() for the static/fixed number of method calls

const reflect = p => p.then(v => ({v, status: "fulfilled" }),
                        e => ({e, status: "rejected" }));

var arr = [ fun(id1), fun(id2), fun(id3) ];      // how to make this dynamically ?

Promise.all(arr.map(reflect)).then(function(results) {
    var success = results.filter(x => x.status === "fulfilled");
});

Is there any possible way to dynamically call the method multiples times and in an asynchronous way?

Thanks in advance!!

What does "dynamically call the method multiples times and in an asynchronous way" mean? I don't understand what problem you need to solve with your existing code based on Promise.all(). — jfriend00
– jfriend00, Commented Mar 21, 2020 at 19:48

Ashish Modi · Accepted Answer · 2020-03-21 17:49:43Z

1

You could use .map on arrays and use Promise.all like this

function funcToCall(id) {
  return Promise.resolve(id); // this could be your promise.
}

const ids = [1, 2, 3, 4];

Promise.all(ids.map(id => funcToCall(id))).then((res = console.log(res)));

answered Mar 21, 2020 at 17:49

Ashish Modi

7,7902 gold badges23 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to call a method multiple times (dynamically) in asynchronous way in node.js

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related