Web Reference: 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 function. A function that accepts a callback parameter may be designed to call back before returning to its caller. But, more typically, a callback reference is stored by the provider so that it can call the function later (as deferred). Jun 18, 2024 · Understanding the nuances between returning a callback and just calling a callback is crucial for writing efficient and bug-free code. This article explores the differences between these two approaches, their implications, and best practices for using callbacks in your Node.js applications.
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