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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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Accessibility overlays: why painting over problems doesn't fix them

Accessibility overlays: why painting over problems doesn't fix them

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4 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
I Built a Tool That Generates a Complete Competitive Intelligence Report on Your Market in Minutes

I Built a Tool That Generates a Complete Competitive Intelligence Report on Your Market in Minutes

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4 min read
How JavaScript Async Actually Works (Event Loop, Micro tasks, and Call Stack)

How JavaScript Async Actually Works (Event Loop, Micro tasks, and Call Stack)

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4 min read
Building a Robust Webhook Handler in Node.js: Validation, Queuing, and Retry Logic

Building a Robust Webhook Handler in Node.js: Validation, Queuing, and Retry Logic

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7 min read
How to Test WebSocket Connections in the Browser (No Install Required)

How to Test WebSocket Connections in the Browser (No Install Required)

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4 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 Ran Three LLMs Entirely in the Browser to Power an AI Coaching Feature. Here's What I Measured.

I Ran Three LLMs Entirely in the Browser to Power an AI Coaching Feature. Here's What I Measured.

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9 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
I built 20 free browser-based developer tools — no tracking, no accounts, 100% client-side

I built 20 free browser-based developer tools — no tracking, no accounts, 100% client-side

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2 min read
Auth0 vs Clerk vs Authon: Migrating Your Auth Layer in 2026

Auth0 vs Clerk vs Authon: Migrating Your Auth Layer in 2026

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4 min read
Browser Rendering Pipeline: How JS and CSS Become Pixels

Browser Rendering Pipeline: How JS and CSS Become Pixels

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9 min read
Sheet2Mock: Convert Excel/Google Sheets Data to Clean JSON + TypeScript Interfaces

Sheet2Mock: Convert Excel/Google Sheets Data to Clean JSON + TypeScript Interfaces

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2 min read
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