DEV Community

JavaScript

Once relegated to the browser as one of the 3 core technologies of the web, JavaScript can now be found almost anywhere you find code. JavaScript developers move fast and push software development forward; they can be as opinionated as the frameworks they use, so let's keep it clean here and make it a place to learn from each other!

Posts

👋 Sign in for the ability to sort posts by relevant, latest, or top.
React Router v7 Complete Guide (2026): Framework Mode, Loaders & Actions

React Router v7 Complete Guide (2026): Framework Mode, Loaders & Actions

Comments
5 min read
JavaScript Closures: The Complete Guide (with Cheat Sheet)

JavaScript Closures: The Complete Guide (with Cheat Sheet)

16
Comments
12 min read
Cómo solucionar el error “Text content does not match server-rendered HTML” en Next.js App Router

Cómo solucionar el error “Text content does not match server-rendered HTML” en Next.js App Router

Comments
3 min read
Streaming Long AI Jobs to the Browser: SSE Patterns From Building an Audit Tool

Streaming Long AI Jobs to the Browser: SSE Patterns From Building an Audit Tool

1
Comments
5 min read
CSS Animations Can't Pause. The Web Animations API Can.

CSS Animations Can't Pause. The Web Animations API Can.

12
Comments
5 min read
Can UI Code Read Like the UI Itself?

Can UI Code Read Like the UI Itself?

Comments
3 min read
7 Things That Break When You Convert a Web App to React Native

7 Things That Break When You Convert a Web App to React Native

Comments
4 min read
5 React interview questions I'd actually ask (and how I'd answer them)

5 React interview questions I'd actually ask (and how I'd answer them)

Comments
2 min read
JavaScript Proxy and Reflect: The Complete Guide

JavaScript Proxy and Reflect: The Complete Guide

16
Comments 3
13 min read
A missing exchange rate is not an exchange rate of 1

Summer Bug Smash: Smash Stories 🐛🛹

A missing exchange rate is not an exchange rate of 1

10
Comments 11
4 min read
A Cleaner Way to Access the Last Element of an Array in JavaScript

A Cleaner Way to Access the Last Element of an Array in JavaScript

2
Comments
1 min read
You copy and reverse the array to find the last match. `findLast()` searches from the end directly.

You copy and reverse the array to find the last match. `findLast()` searches from the end directly.

23
Comments
3 min read
Debugging Node.js Like a Pro

Debugging Node.js Like a Pro

Comments
3 min read
A formula can be implemented perfectly and still give the wrong answer

A formula can be implemented perfectly and still give the wrong answer

1
Comments
5 min read
Three things Indian finance code gets wrong (with the numbers)

Three things Indian finance code gets wrong (with the numbers)

2
Comments
4 min read
👋 Sign in for the ability to sort posts by relevant, latest, or top.