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.
I Built a Price History Tracker for Japan's 4 Major E-Commerce Sites (Amazon.co.jp, Rakuten, Yahoo!, Mercari)

I Built a Price History Tracker for Japan's 4 Major E-Commerce Sites (Amazon.co.jp, Rakuten, Yahoo!, Mercari)

Comments
4 min read
“JavaScript Array Methods Explained Simply”

“JavaScript Array Methods Explained Simply”

Comments
3 min read
Stop using UUID v4 for database primary keys — UUIDv7 is the 2026 default

Stop using UUID v4 for database primary keys — UUIDv7 is the 2026 default

1
Comments
5 min read
Generating Vue.js Components with Kiro — Building an "Auntie Tigress" Tracker 🐯

Generating Vue.js Components with Kiro — Building an "Auntie Tigress" Tracker 🐯

1
Comments
3 min read
Spread vs Rest Operators in JavaScript

Spread vs Rest Operators in JavaScript

1
Comments 1
2 min read
useEffect in React — the invisible engine behind real apps

useEffect in React — the invisible engine behind real apps

7
Comments
4 min read
Why you keep attacking npm?

Why you keep attacking npm?

2
Comments
1 min read
I Built a Free Browser Games Website Because Games Became Too Complicated

I Built a Free Browser Games Website Because Games Became Too Complicated

2
Comments 1
2 min read
I Built an AI That Roasts Your Startup Idea Like a VC Would

I Built an AI That Roasts Your Startup Idea Like a VC Would

Comments
3 min read
"Designing the UI for an AI That Does Not Always Behave the Same Way Twice"

"Designing the UI for an AI That Does Not Always Behave the Same Way Twice"

2
Comments
7 min read
I built a color-memory game in vanilla JS — what I learned trying to make "guess the cartoon hue" feel fair

I built a color-memory game in vanilla JS — what I learned trying to make "guess the cartoon hue" feel fair

Comments 1
2 min read
How to Enrich Transaction Data with One API Call (and Why Your App Needs It)

How to Enrich Transaction Data with One API Call (and Why Your App Needs It)

Comments
4 min read
Defluffer - reduce token usage 📉 by 45% using this one simple trick! [Earthday challenge]

DEV Weekend Challenge: Earth Day

Defluffer - reduce token usage 📉 by 45% using this one simple trick! [Earthday challenge]

94
Comments 45
5 min read
Ditching Redux: Why Zustand is the Future of React State Management 🐻

Ditching Redux: Why Zustand is the Future of React State Management 🐻

Comments
3 min read
The Most Dangerous Code in Your App Might Be a Fresh Dependency

The Most Dangerous Code in Your App Might Be a Fresh Dependency

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