Returning value to function inside another nested function

Question

So I have this javascript code. There are 2 nested functions. How can I return a value to funcA() inside funcB() ?

function funcA() {
   funcB(() => {
        //return funcA inside here 
    })
}

Is this even possible without doing it like the following?

function funcA() {
    let returnValueA;
    funcB(() => {
        //change returnValueA inside here
    })
    return returnValueA;
}

in your example, `returnValueB` is not defined, and `funcB` is never called and `returnValueA` is never used ... so .. the answer is a pineapple — Jaromanda X, Aug 06 '20 at 09:12
@agentp — No. That would be if `funcA` conditionally called *itself*. — Quentin, Aug 06 '20 at 09:16
It depends on what `funcB` does. If it's a *synchronous* callback, there may be things you can do and/or `funcB` should handle the return value appropriately. If it's an *asynchronous* callback, there's no way. — deceze, Aug 06 '20 at 09:16
@Quentin Indeed, the question has been thoroughly edeted multiple times. But it's still [possible](https://jsfiddle.net/br6jxgu0/1/), `return funcB(...)`, if `funcB` is synchronous, and returns a value created by the callback. — Teemu, Aug 06 '20 at 09:24
For some reason I can't answer. Check out generators: [mdn](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Generator) — Nathan Chappell, Aug 06 '20 at 09:28
Thanks for the help to y'all! I have made a few typing mistakes when publishing the question. Sorry if the edits were confusing :) — Behemoth, Aug 06 '20 at 11:57

score 1 · Accepted Answer · answered Aug 06 '20 at 09:15

1

In short: No.

A return statement only defines what is returned from the function it is part of.

answered Aug 06 '20 at 09:15

Quentin

1 Answers1