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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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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
Agentic farm advisory assistant built with Gemma 4 + Google AI Studio

Agentic farm advisory assistant built with Gemma 4 + Google AI Studio

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6 min read
I Built a Browser-Based YouTube Frame Extractor (No FFmpeg Required)

I Built a Browser-Based YouTube Frame Extractor (No FFmpeg Required)

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1 min read
IA no desenvolvimento web: de escrever cĂłdigo para orquestrar sistemas

IA no desenvolvimento web: de escrever cĂłdigo para orquestrar sistemas

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4 min read
I added nested CSV to JSON support to a free browser-based converter

I added nested CSV to JSON support to a free browser-based converter

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1 min read
Launch day: PortalJS skills, install with one command

Launch day: PortalJS skills, install with one command

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2 min read
Google Trends will 429 you into the ground — here's how I got past it

Google Trends will 429 you into the ground — here's how I got past it

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5 min read
Game genetics without Mendel: continuous traits, skewed mutation, and backend-free genome codes

Game genetics without Mendel: continuous traits, skewed mutation, and backend-free genome codes

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5 min read
I built a background remover that doesn't upload your photos (no $40/month)

I built a background remover that doesn't upload your photos (no $40/month)

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1 min read
Extract Audio from Video in Your Browser — No Upload, Works Offline

Extract Audio from Video in Your Browser — No Upload, Works Offline

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3 min read
End-to-end encrypted collaborative notes in ~300 lines of JavaScript — no app server

End-to-end encrypted collaborative notes in ~300 lines of JavaScript — no app server

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6 min read
Fetching Data in React: A Beginner-Friendly Guide (with `fetch` and `async/await`)

Fetching Data in React: A Beginner-Friendly Guide (with `fetch` and `async/await`)

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3 min read
How to embed a widget on any site without CSS collisions (Shadow DOM)

How to embed a widget on any site without CSS collisions (Shadow DOM)

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3 min read
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