If you're already somewhat familiar with promises, here are some shortcuts to save you some precious scrolling time. Introduction When writing JavaScript, we often have to deal with tasks that rely on other tasks! Let's say that we want to get an image, compress it, apply a filter, and save it 📸 The very first thing we need to do, is get the image that we want to edit. A getImage function can tak

Ever wondered why we can use built-in methods such as .length, .split(), .join() on our strings, arrays, or objects? We never explicitly specified them, where do they come from? Now don't say "It's JavaScript lol no one knows, it's magic 🧚🏻‍♂️", it's actually because of something called prototypal inheritance. It's pretty awesome, and you use it more often than you realize! We often have to crea

JavaScript is cool (don't @ me), but how can a machine actually understand the code you've written? As JavaScript devs, we usually don't have to deal with compilers ourselves. However, it's definitely good to know the basics of the JavaScript engine and see how it handles our human-friendly JS code, and turns it into something machines understand! 🥳 | Note: This post is mainly based on the V8 eng

If you're here in 2024 (or later), here's an updated blog post!](https://lydiahallie.com/blog/event-loop) Oh boi the event loop. It’s one of those things that every JavaScript developer has to deal with in one way or another, but it can be a bit confusing to understand at first. I’m a visual learner so I thought I’d try to help you by explaining it in a visual way through low-res gifs because it's