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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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10 Cool CodePen Demos (June 2026)

10 Cool CodePen Demos (June 2026)

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3 min read
When an old business web app needs IE mode, and when it does not

When an old business web app needs IE mode, and when it does not

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3 min read
How to Build an Unlocked AI Agent for Browser Automation with Node.js, Bright Data, Gemini, and Playwright

How to Build an Unlocked AI Agent for Browser Automation with Node.js, Bright Data, Gemini, and Playwright

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20 min read
Watermark removal isn't lossy — you've been using the wrong tool

Watermark removal isn't lossy — you've been using the wrong tool

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6 min read
TypeScript 6.0 `isolatedDeclarations`: What It Actually Replaces and Why It Matters

TypeScript 6.0 `isolatedDeclarations`: What It Actually Replaces and Why It Matters

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8 min read
Shipping one Manifest V3 extension to Chrome, Edge, and Firefox from a single source

Shipping one Manifest V3 extension to Chrome, Edge, and Firefox from a single source

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3 min read
Drizzle ORM Migrations: push vs migrate (and what actually belongs in production)

Drizzle ORM Migrations: push vs migrate (and what actually belongs in production)

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1 min read
Why Calculating Age Is Harder Than Most Developers Think

Why Calculating Age Is Harder Than Most Developers Think

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2 min read
useRef in React

useRef in React

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1 min read
Hi, I'm Sithija Kalhara — Full-Stack Developer & Game Streamer

Hi, I'm Sithija Kalhara — Full-Stack Developer & Game Streamer

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1 min read
How I built a clean Compound Interest Calculator in Vanilla JS

How I built a clean Compound Interest Calculator in Vanilla JS

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1 min read
The Hidden Danger in React Server Actions: How to Prevent Accidental Data Leaks

The Hidden Danger in React Server Actions: How to Prevent Accidental Data Leaks

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3 min read
From Axios to alova: how we cut 80 lines to 5

From Axios to alova: how we cut 80 lines to 5

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3 min read
How I Cut Chargebacks by 40% With 15 Lines of Code at Checkout

How I Cut Chargebacks by 40% With 15 Lines of Code at Checkout

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4 min read
I Built a Random Letter Tool - Teachers Showed Me What It Was Really For.

I Built a Random Letter Tool - Teachers Showed Me What It Was Really For.

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4 min read
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