JavaScript

Introduction to JavaScript Functions When I first started learning JavaScript, functions seemed simple enough. But then I ran into the infamous “this” problem, where “this” suddenly referred to something completely different than what I expected. Sound familiar? JavaScript functions are like Swiss Army knives, versatile, powerful, and sometimes a bit confusing. In this article, I want to tackle two aspects of JavaScript functions that took my code to the next level: ...

Introduction Ever felt like you’re writing too much code just to loop through JavaScript objects? I know I have! When I first started with JavaScript, I’d always reach for the trusty for...in loop, carefully adding those hasOwnProperty checks every single time. It worked, but it wasn’t exactly elegant. Then came ES2017 (ES8), and JavaScript gifted us with three fantastic methods that changed how we work with objects: Object.keys(), Object.values(), and Object.entries(). These methods are like the Swiss Army knives for object manipulation, simple, powerful, and incredibly useful in day-to-day coding. ...

Cutting Up Strings in JavaScript Ever been confused about all the different ways to chop up strings in JavaScript? You’re not alone! I’ve spent more hours than I’d like to admit trying to remember which method does what. JavaScript gives us three main ways to grab parts of strings: substring(), substr(), and slice(). They might look similar at first glance, but they each behave a bit differently. The String-Chopping Trio: A Quick Look Before we dive into the nitty-gritty, here’s a cheat sheet I wish I had when I was learning: ...

Introduction If you’ve spent any time debugging JavaScript, you’ve probably run into type errors. You know the ones, where you try to call a method on something that turns out to be undefined or try to loop through something that isn’t actually an array. Been there, done that! JavaScript gives us two main ways to check what we’re dealing with: typeof and instanceof. They might look like they do the same thing, but trust me, mixing them up can lead to some head-scratching bugs. Let’s break down how these two operators work and when you should reach for each one. ...

What is TypeScript? Remember that first time you found a bug in your JavaScript code that was just a simple typo? Or when you spent hours debugging only to find out you passed a string where a number was expected? I sure do, and it wasn’t fun! That’s where TypeScript enters the picture. Created by Microsoft and first released in 2012, TypeScript is like JavaScript’s more disciplined sibling. It’s a superset of JavaScript, which means all your existing JavaScript code is already valid TypeScript code (cool, right?). But TypeScript adds something crucial that JavaScript lacks: a robust type system. ...