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$ curl repovive.com/roadmaps/javascript/functions/callback-functions

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$ curl repovive.com/roadmaps/javascript/functions/callback-functions

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Callback Functions - Functions | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Callback Functions

Passing functions as arguments

A callback is a function passed to another function:

function processData(data, callback) {
  console.log("Processing...")
  callback(data)
}

function logResult(result) {
  console.log("Result:", result)
}

processData(42, logResult)
// Processing...
// Result: 42

Callbacks let you customize behavior. The receiving function decides when to call your callback.