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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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I built a budget app with no backend — everything lives in localStorage

I built a budget app with no backend — everything lives in localStorage

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3 min read
Mega Millions after taxes: the 24% withholding is the wrong number (with code)

Mega Millions after taxes: the 24% withholding is the wrong number (with code)

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4 min read
How I Built ConvertLinx: 20+ Free Online Tools That Run Entirely in Your Browser

How I Built ConvertLinx: 20+ Free Online Tools That Run Entirely in Your Browser

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3 min read
Node.js Security Best Practices: Build Safer and More Resilient APIs

Node.js Security Best Practices: Build Safer and More Resilient APIs

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5 min read
SQL Joins Explained with a Real-World E-Commerce Database

SQL Joins Explained with a Real-World E-Commerce Database

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9 min read
🚀 New React Challenge: Undo / Redo

🚀 New React Challenge: Undo / Redo

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3 min read
Javascript - Fetch Data

Javascript - Fetch Data

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14 min read
5 JavaScript Bugs That Look Correct (But Absolutely Are Not)

5 JavaScript Bugs That Look Correct (But Absolutely Are Not)

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5 min read
What an MX-only email check can and cannot tell you

What an MX-only email check can and cannot tell you

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3 min read
Scoring an unknown domain 0 to 100 from public signals, with every penalty documented

Scoring an unknown domain 0 to 100 from public signals, with every penalty documented

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4 min read
Stop Mailinator signups with one GET request

Stop Mailinator signups with one GET request

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3 min read
Como virei blogueira sem querer (e por que vocĂŞ deveria fazer o mesmo)

Como virei blogueira sem querer (e por que vocĂŞ deveria fazer o mesmo)

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4 min read
I made a quantum circuit tool that doesn’t feel like a textbook

I made a quantum circuit tool that doesn’t feel like a textbook

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2 min read
Next.js Typed Routes in 2026: Enabling `typedRoutes` Experimentally and What It Catches That TypeScript Alone Misses

Next.js Typed Routes in 2026: Enabling `typedRoutes` Experimentally and What It Catches That TypeScript Alone Misses

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11 min read
Let the AI click. Don't let it grade.

Let the AI click. Don't let it grade.

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6 min read
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