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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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How to Geo-Block Countries in Express.js (Free IP Geolocation API)

How to Geo-Block Countries in Express.js (Free IP Geolocation API)

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4 min read
How to Build a Broken Link Checker in JavaScript (Free API)

How to Build a Broken Link Checker in JavaScript (Free API)

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5 min read
Building a JSON Formatter: Zero-Click Auto-Format and the Clipboard API Trap

Building a JSON Formatter: Zero-Click Auto-Format and the Clipboard API Trap

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6 min read
How to Verify Email Addresses in JavaScript (Without Sending Emails)

How to Verify Email Addresses in JavaScript (Without Sending Emails)

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6 min read
How to Build a Domain Intelligence Tool in JavaScript (DNS + Geolocation + Screenshots)

How to Build a Domain Intelligence Tool in JavaScript (DNS + Geolocation + Screenshots)

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8 min read
6 PostgreSQL vs MongoDB Data Modeling Patterns JavaScript Developers Use in Production

6 PostgreSQL vs MongoDB Data Modeling Patterns JavaScript Developers Use in Production

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4 min read
Problem Solving Series — Day 1 The String Problem That Taught Me About Sets in JavaScript

Problem Solving Series — Day 1 The String Problem That Taught Me About Sets in JavaScript

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3 min read
How to Build Website Uptime Monitoring in 10 Minutes (Free, No Dependencies)

How to Build Website Uptime Monitoring in 10 Minutes (Free, No Dependencies)

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4 min read
I reverse-engineered manhwa power systems into a real habit RPG — the game design archaeology of SYD

I reverse-engineered manhwa power systems into a real habit RPG — the game design archaeology of SYD

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3 min read
Building a TypeScript/JavaScript SDK for Adhese's advertising software

Building a TypeScript/JavaScript SDK for Adhese's advertising software

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3 min read
I built HireReady: AI voice interviews + spaced repetition for tech interview prep

I built HireReady: AI voice interviews + spaced repetition for tech interview prep

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2 min read
I tried every axios alternative. None of them worked on Cloudflare Workers. So I built one.

I tried every axios alternative. None of them worked on Cloudflare Workers. So I built one.

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3 min read
GDPR Cookie Consent Implementation: What Most Developers Get Wrong (and How to Fix It)

GDPR Cookie Consent Implementation: What Most Developers Get Wrong (and How to Fix It)

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10 min read
I built a free developer conversion tools site (JSON TypeScript, YAML↔JSON, and more)

I built a free developer conversion tools site (JSON TypeScript, YAML↔JSON, and more)

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1 min read
Building an AI-Powered Revenue Recovery Engine for SaaS 🚀 (Next.js 15 + Gemini 2.0)

Building an AI-Powered Revenue Recovery Engine for SaaS 🚀 (Next.js 15 + Gemini 2.0)

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2 min read
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