In computer programming, a callback is a programming pattern in which a function reference is passed from one context (consumer) to another (provider) such that the provider can call the function.

5 days ago · Thesaurus: All synonyms and antonyms for callback. Love words? Need even more definitions?

A JavaScript callback is a function passed as an argument to another function, which is then executed (or "called back") at a later point in time to complete a specific task.

May 5, 2009 · A callback function, also known as a higher-order function, is a function that is passed to another function as a parameter, and the callback function is called (or executed) inside the parent …

Aug 19, 2025 · A callback function is a function passed into another function as an argument, which is then invoked inside the outer function to complete some kind of routine or action.

Jan 17, 2026 · A callback function is a function that is passed as an argument to another function and executed later. A function can accept another function as a parameter. Callbacks allow one function …

Callback (computer programming), callable (i.e. function) that is passed as data and expected to be called by another callable.

Interacting with databases // "Hey, when you're done, call this next." hello (goodbye); function hello (callback) { console.log ("Hello!"); callback (); } function goodbye () { console.log...

A callback is a function passed into another function as an argument to be executed later. A high-order function is a function that accepts another function as an argument.

A callback is a function passed into another function and executed later. Learn how callbacks work, why they matter, common examples, and challenges.