Callbacks are one of the critical elements to understand JavaScript and Node.js. Nearly, all the asynchronous functions use a callback (or promises). In this post, we are going to cover callbacks in-depth and best practices.

This post assumes you know the difference between synchronous and asynchronous code.

JavaScript is an event-driven language. Instead of waiting for things to happen, it executes while listening for events. The way you respond to an event is using callbacks.

#javascript #programming