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    Understand Callbacks in Node.js

    javascriptJavaScript

    In this lesson you will learn what callbacks are, how to use them and why we use them in our Node applications. We start with a simple javascript function and build a second function that uses it as a callback to understand the basic operation of a callback. From there, we create a few more functions that help illustrate how using callbacks can help us keep our code legible and organized as well as allowing us to use generic functions that can bring in extra functionality when needed via the callback.