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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!

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Fable 5 Creates Playable 3D Worlds: Underwater Manhattan, Living Paintings, and 63 Three.js Experiments

Fable 5 Creates Playable 3D Worlds: Underwater Manhattan, Living Paintings, and 63 Three.js Experiments

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8 min read
Designing a Multi-Agent AI Architecture for SiteGen AI

Designing a Multi-Agent AI Architecture for SiteGen AI

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3 min read
React Doctor marcó 1,249 problemas en una SPA de React. Cinco valían la pena arreglar

React Doctor marcó 1,249 problemas en una SPA de React. Cinco valían la pena arreglar

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9 min read
Why Your Images Are Killing Your Core Web Vitals (and How I Fixed It in One Afternoon)

Why Your Images Are Killing Your Core Web Vitals (and How I Fixed It in One Afternoon)

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3 min read
How to Prevent XSS Attacks: Output Encoding, CSP & DOMPurify (2026 Cheatsheet)

How to Prevent XSS Attacks: Output Encoding, CSP & DOMPurify (2026 Cheatsheet)

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7 min read
A stranger fixed my bug. Then I found out he fixed the wrong half — and it still worked.

A stranger fixed my bug. Then I found out he fixed the wrong half — and it still worked.

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7 min read
Stop validating emails with regex: here's what to do instead

Stop validating emails with regex: here's what to do instead

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2 min read
I built a VAT/GST invoice generator with zero backend — here's how

I built a VAT/GST invoice generator with zero backend — here's how

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3 min read
idmix: A Better Alternative to Sqids for Structured Access Keys

idmix: A Better Alternative to Sqids for Structured Access Keys

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3 min read
Why Functional Code Can Be Slower

Why Functional Code Can Be Slower

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5 min read
I built a game that lies to you - in a single 28KB HTML file (no framework, no assets)

I built a game that lies to you - in a single 28KB HTML file (no framework, no assets)

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2 min read
Optimizing Network Interception in Manifest V3: Inside the Architecture of an Asynchronous Blocklist Extension

Optimizing Network Interception in Manifest V3: Inside the Architecture of an Asynchronous Blocklist Extension

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3 min read
When a `for...of` Loop Is Better Than `reduce()`

When a `for...of` Loop Is Better Than `reduce()`

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4 min read
The hard part of building a dubbing extension wasn't the AI. It was the video player.

The hard part of building a dubbing extension wasn't the AI. It was the video player.

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3 min read
4 Security Bugs I Found in My Own Auth System (And How I Fixed Them)

4 Security Bugs I Found in My Own Auth System (And How I Fixed Them)

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4 min read
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