Nico Zerpa (he/him) articles - 45 total
What you have to learn before React
Learning front-end development is often overwhelming for beginners. Many of them want to learn React,...
Small trick to understand the `this` keyword
The this keyword is one of the biggest headaches for anyone learning JavaScript. In this article, I...
Don't add or change methods in built-in JavaScript objects
It is possible to add and modify properties and methods to JavaScript classes and prototypes using...
Why I don't like front-end developer roadmaps
Development roadmaps are very common among those who want to become front-end developers. However,...
Can "Don't reinvent the wheel" be bad advice?
A very common programming tip is "Don't reinvent the wheel". If there's already a library that...
10 beginner-friendly JavaScript projects
Programming is a skill and you need to practice if you want to become better at it. Creating your own...
TypeScript: why static typing matters
The biggest feature that TypeScript brings to the table is static types. But, what are the advantages...
Why are there so many JavaScript frameworks?
Angular, React, Vue.js, Svelte... Next.js, Nuxt.js, Astro... Redux, Recoil, Zustand, MobX... the...
JavaScript can speak! Using the Speech Synthesis API
A very underutilized feature in browsers is text-to-speech. With the Speech Synthesis API, you can...
Strict mode in JavaScript
JavaScript wasn't originally created as a full-fledged programming language. It's original purpose...
Should you use semicolons in JavaScript?
It's a topic that could seem trivial at first sight, but it actually causes some controversy among...
JavaScript closures, explained
Closures are a concept that puzzle many JavaScript developers, even after reading the zillion...
JavaScript has a problem with decimals
JavaScript handles decimal numbers in a weird way. What happens, for example, if you do the...
Are you suffering from JavaScript fatigue?
Let's face it, the JavaScript ecosystem can be overwhelming. New libraries appear all the time,...
When to use useMemo and useCallback in React?
These two React hooks, useMemo and useCallback are useful when you’re dealing with expensive...
Learning to code and inferiority complex
If you're a member of tech communities online, you'll often read success stories of people whose...
The guide to cloning objects in JavaScript
Copying and cloning objects in JavaScript is tricky. It's one of those things that look easy, but can...
The Intl object: JavaScript can speak many languages
JavaScript has a useful yet unknown object to handle formatting dates, numbers, and other values in...
What's the best way to learn JavaScript? There isn't any
"What's the best way to learn JavaScript?" is a question that I hear/read all the time from...
You're using too much JavaScript
JavaScript Libraries (or frameworks) like React, Angular or Vue.js have been the main protagonists of...
When should I use asynchronous code in JavaScript?
If you were learning JavaScript for some time, I'm sure that you've heard about asynchronous code....
Never use Math.random() to create passwords in JavaScript
Recently, I've seen articles and tweets that show how to build random password generators with...
Vite, the hassle-free alternative to Webpack
Webpack is the most popular module bundler to build complex JavaScript applications. It has more than...
When to use `const` versus `let` versus `var` in JavaScript?
JavaScript has three ways to declare variables, var, const, and let. Sometimes, that leaves people...
Beware of JavaScript Arrow Functions
Arrow functions are a fantastic addition to JavaScript. However, I've noted that many devs use arrow...
How do JavaScript Prototypes Work?
Prototypes in JavaScript is a special topic. You probably won't use them because classes and some...
Should you Migrate Your Big React App to TypeScript?
For large-scale applications, a big recommendation is to use a static-typed language, like...
What to Do If You Learned Nothing from Programming Courses?
A couple of weeks ago, I found this on Reddit: Me after completing Codecademy JavaScript course: I...
Understand Async/Await in 5 Minutes
Understanding async in JavaScript is a common problem for many developers. Getting your head around...
Should You Really Learn Vanilla JavaScript Before React?
"Learn the basics before you learn React", they say. But if you're a beginner who's learning with...