How to write a callback function?

Asked Feb 16 '20 at 13:00

Active Feb 16 '20 at 13:01

Viewed 29 times

I have some callback function, but this dont work I dont understund why

const loading = () => {
  const callFalse = () => {
    return false;
  }
  const callTrue = () => {
    setTimeout(() => {
      callFalse()
    }, 5000)
    return true;
  }
  return callTrue();
}
console.log(loading())

Return only true. How fix this?

edited Feb 16 '20 at 13:01

CertainPerformance

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asked Feb 16 '20 at 13:00

Кларк

1

A function call can have only one return value. Your `loading()` function returns what `callTrue()` returns. – Pointy Feb 16 '20 at 13:02
1

If you want to use the result of `callFalse`, pass a callback to `loading` that you call once the setTimeout finishes – CertainPerformance Feb 16 '20 at 13:02
I truly don't understand what you are trying to do. can you please elaborate? – fadeys.work Feb 16 '20 at 13:02
What would be the expected output? – Wiktor Zychla Feb 16 '20 at 13:02

How to write a callback function?

0 Answers0