Prior to ECMAScript 6 (ES6), we declared all variables using the var keyword. As of ES6, we now have two new keywords to declare variables: let and const. In this post, I will discuss the const keyword, which allows us to declare immutable variables. *** Get quick JavaScript tips in your inbox by signing up for my free newsletter! *** Achieve Variable Immutability Using Const Declaring variables in…

State management is challenging. We can make it less challenging by making sure we don’t store any redundant information in our state. What do I mean? Let’s say in our program we need to figure out whether people will be allowed in our bar. We can determine this by examining…

About a month ago, I posted an example of fetching data using React Hooks to Twitter. While it was well-intended, Dan Abromov (of the React core team) let me know that my implementation contained a race condition. Consequently, I promised to write a blog post correcting my implementation. …

Whiteboard-style interviews are ubiquitous in the tech industry. For those who have not had the pleasure, whiteboard interviewing is the practice of asking candidates to solve technical questions on a whiteboard, piece of paper, or computer during the interview. …

Do you sometimes feel like you’ll never know enough to be a real software engineer? Have you interacted with seasoned engineers who made you feel like you just won’t cut it in the industry? Software development is an inherently intellectual endeavor — it requires you to learn a lot of…

Express is a terrific JavaScript framework that serves as the backend for a lot of full stack web applications. Many of us use it day-to-day and are proficient in how to use it but may lack an understanding of how it works. …

Edit: I have been getting quite a bit of feedback interpreting this article to mean that recursive functions are bad and iterative methods are always better. This couldn’t be further from what I believe — This article simply aims to discuss iteration as an alternative tool! In programming, we’re often…

Classes are nothing new in programming, but their implementation in JavaScript is, well, weird. For anyone used to classes in other languages, you might think of them as blueprints from which new instances are copied. Additionally, you might think that these classes would offer public, private, and protected instance properties…