Blogs / Personal blogs

Josh Comeau

joshwcomeau.com

Friendly articles and tutorials for front-end web developers. ❤️

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Visit joshwcomeau.com → RSS feedOn Hacker News Dec 2019 – Oct 2026

Web & Frontend 27Design & UX 20Software Engineering 8Career & Management 4Tools & Productivity 2Life, Learning & Writing 2

2

Why React Re-Renders

In React, we don't update the DOM directly, we tell React what we want the DOM to look like, and React tackles the rest. But how exactly does it do this? In this tutorial, we'll unpack exactly when and why React re-renders, and how we can use this information to optimize the performance of our React apps.

3

Common Beginner Mistakes with React

I used to teach React at a local coding bootcamp, and I noticed that students kept getting tripped up by the same handful of things. In this article, we're going to go through 9 of the most dastardly gotchas. I'll show you how to solve these common problems, so you can avoid a lot of potential frustration!

4

Hands-Free Coding (2020)

Earlier this year, I lost the ability to use a keyboard and mouse for extended periods. Fortunately, this wasn't as catastrophic as it sounds! This article chronicles my experience using adaptive tools like dictation and eye-tracking as my primary mechanisms for writing code.

7

Making sense of React Server Components

This year, the React team unveiled something they've been quietly researching for years: an official way to run React components exclusively on the server. This is a significant paradigm shift, and it's caused a whole lot of confusion in the React community. In this tutorial, we'll explore this new world, and build an…