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

A callback is a function passed as an argument to another function. This technique allows a function to call another function. A callback function can run after another function has finished. JavaScript …

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, …

May 5, 2009 · In programming words, a function leaves a reference of itself to another piece of code, e.g. by registering, and the other code uses this reference to call the (callback) function when …

May 18, 2025 · A callback is a function passed into another function and executed later. Learn how callbacks work, why they matter, common examples, and challenges.

Aug 2, 2025 · How Do Callbacks Work in JavaScript? JavaScript executes code line by line (synchronously), but sometimes we need to delay execution or wait for a task to complete before …

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 …

Mar 18, 2024 · Using callbacks, the training function can add functionality to high-level API training procedures. This allows us to incorporate features such as advanced logging, model saving, and …

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 …

In this tutorial, you will learn about JavaScript callbacks and how they are used to handle asynchronous operations.