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TypeError [ERR_INVALID_CALLBACK]

I want to Implement a function which can run a given function after a delay.

Arguments:

callback: the function to execute after the delay
delay: number of milliseconds to wait
data: the one (and only) argument to pass to the callback

And this was my code

let cb = function(x) {
  console.log(x);
};

const doShortly = function(callback, delay, data) {
  let result = setTimeout(callback(data), delay);
  return result;
};

console.log(doShortly(cb, 500, 'hi'));

I get TypeError [ERR_INVALID_CALLBACK] when I run the code. May I know how to fix this. TIA.

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-10T07:19:43.618Z

You can use setTimeout or setInterval for that directly. All the params after the delay param, will be passed to the callback function in the same order :)

let cb = function(x) {
  console.log(x);
};

const doShortly = function(callback, delay, data) {
  let result = setTimeout(callback, delay, data);
  return result;
};

console.log(doShortly(cb, 500, 'hi')); // or: setTimeout(cb, 500, 'hi')

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TypeError [ERR_INVALID_CALLBACK]

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Andres GPT