CODEWITHSUNDEEP
javascript
DatCra
DatCra

Reputation: 373

How to pass unknown additional parameters to callback function when invoked?

Invokes func after wait milliseconds. Any additional arguments are provided to func when it is invoked.

I can't think of a good way to pass undefined amount of additional arguments into the callback function. Any suggestion? 

function delay(func, wait) {
    return setTimeout(func, wait);
}
// func will run after wait millisec delay

// Example
delay(hello, 100);
delay(hello, 100, 'joe', 'mary'); // 'joe' and 'mary' will be passed to hello function

Upvotes: 0

Views: 531

Answers (1)

Dev Yego
Dev Yego

Reputation: 553

Define delay like this

function delay(fn, ms) {
  var args = [].slice.call(arguments, 2);

  return setTimeout(function() {
    func.apply(Object.create(null), args);
  }, ms);
}

Or if you are an ES6/7 fan

function delay(fn, ms, ...args) {
  return setTimeout(function() {
    func.apply(Object.create(null), args);
  }, ms);
}

Upvotes: 3

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