If you remember the world of callbacks you’ve been part of the JavaScript ecosystem for some time now. With the introduction of ES6, Promises came along to bring a better world.

Before that, callbacks provided a way to handle asynchronous operations. They were a powerful way of executing code once an asynchronous operation has finished. But JavaScript evolves and now it’s time to move on.

So we will look into Promises, which proved to be superior to callbacks. But first to avoid any confusion, let’s define what exactly are callbacks.

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