Callbacks are often used in JavaScript, especially in event handling. User interactions, such as button clicks or key presses, can be handled by providing a callback function to an event listener:

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.

Aug 19, 2025 · Synchronous callbacks are called immediately after the invocation of the outer function, with no intervening asynchronous tasks, while asynchronous callbacks are called at some point later, …

Jan 17, 2026 · Callbacks allow one function to call another at a later time. A callback function can execute after another function has finished. Here, sayBye () is passed as a callback to greet (), which …

Jun 18, 2022 · To demonstrate the use of callbacks, promises and other abstract concepts, we’ll be using some browser methods: specifically, loading scripts and performing simple document …

Jul 3, 2024 · Callback functions help manage asynchronous operations, ensuring that the code continues to run smoothly without waiting for tasks to complete. This approach is crucial for …

Learn about the callback process, how to get a callback, what to expect at callbacks, and how to prepare for callbacks!