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

đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.
Your Test Suite Is Lying to You. 90% Coverage and Zero Confidence.

Your Test Suite Is Lying to You. 90% Coverage and Zero Confidence.

Comments
5 min read
Feature Flags in 5 Minutes with Node.js

Feature Flags in 5 Minutes with Node.js

Comments
2 min read
Why JavaScript String Length Lies to You

Why JavaScript String Length Lies to You

Comments
6 min read
The Clone Conspiracy: Shallow Copy vs. Deep Copy in JavaScript 👯‍♂️

The Clone Conspiracy: Shallow Copy vs. Deep Copy in JavaScript 👯‍♂️

1
Comments
3 min read
How I built an encrypted messenger that requires zero accounts — not even a username

How I built an encrypted messenger that requires zero accounts — not even a username

Comments
2 min read
Event Loop: Macro vs Microtask

Event Loop: Macro vs Microtask

1
Comments
1 min read
Introduction to abstract syntax trees (AST)

Introduction to abstract syntax trees (AST)

Comments
7 min read
🚀 Week 19: Advanced Context API, Map Integration & Working with JSON-Server (Fake API)

🚀 Week 19: Advanced Context API, Map Integration & Working with JSON-Server (Fake API)

5
Comments
2 min read
Building a Time-Traveling HashMap in JavaScript

Building a Time-Traveling HashMap in JavaScript

Comments
3 min read
How I Built a Fast, Browser-Based Sudoku Platform Using JavaScript

How I Built a Fast, Browser-Based Sudoku Platform Using JavaScript

Comments
3 min read
How I Built a WCAG Contrast Checker in 50 Lines of JavaScript.

How I Built a WCAG Contrast Checker in 50 Lines of JavaScript.

Comments
3 min read
How Vibe Coding Helped Me Build Guess The Anime Tool

How Vibe Coding Helped Me Build Guess The Anime Tool

1
Comments
4 min read
How fetch(keepalive) Broke in High-Latency Regions

How fetch(keepalive) Broke in High-Latency Regions

Comments
2 min read
The `useEffect` Infinite Loop: Your React Debugging Masterclass đź’Ą

The `useEffect` Infinite Loop: Your React Debugging Masterclass đź’Ą

1
Comments
6 min read
The packaging bugs I kept shipping (and the tool I built to stop)

The packaging bugs I kept shipping (and the tool I built to stop)

Comments
3 min read
đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.