The Callback Function

The video tutorial explores callback functions in Node.js, emphasizing their role in asynchronous programming. It covers practical examples using setTimeout and filter, and demonstrates creating custom functions that accept callbacks. The tutorial also simulates asynchronous processes and presents a challenge to reinforce learning by creating a function using the callback pattern.

How do you define a function that takes a callback in JavaScript?

Explain how to simulate an asynchronous process using setTimeout.

What is the purpose of using a callback function in the geocode example?

What is the expected output when the add function is called with the numbers 2 and 3?