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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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Building a 403-Function Casio fx-991ES PLUS Scientific Calculator in Pure JavaScript & PWA

Building a 403-Function Casio fx-991ES PLUS Scientific Calculator in Pure JavaScript & PWA

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2 min read
CĂłmo solucionar el error \"Text content does not match server-rendered HTML\" en Next.js App Router

CĂłmo solucionar el error \"Text content does not match server-rendered HTML\" en Next.js App Router

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3 min read
Why I Built Yet Another Rich Text Editor

Why I Built Yet Another Rich Text Editor

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3 min read
How I Built a Client-Side Shield for AI Chatbots (Open Source)

How I Built a Client-Side Shield for AI Chatbots (Open Source)

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1 min read
Building an On-Device Q&A Agent with Chrome Built-in AI and the Prompt API

Building an On-Device Q&A Agent with Chrome Built-in AI and the Prompt API

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6 min read
JavaScript Design Patterns: Singleton and Factory Explained with Real Examples

JavaScript Design Patterns: Singleton and Factory Explained with Real Examples

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6 min read
A Working Application Isn't Necessarily a Well-Engineered Application

A Working Application Isn't Necessarily a Well-Engineered Application

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3 min read
Your hreflang says English-only. Does your language switcher agree?

Your hreflang says English-only. Does your language switcher agree?

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3 min read
Understanding Event-Driven Architecture in Modern Applications

Understanding Event-Driven Architecture in Modern Applications

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2 min read
I built 59 free browser-based dev tools in vanilla JS — here's what I learned

I built 59 free browser-based dev tools in vanilla JS — here's what I learned

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2 min read
Stop Overworking Your Code: A Friendly Guide to Debouncing

Stop Overworking Your Code: A Friendly Guide to Debouncing

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3 min read
The Determinism Gap: Why Your Playwright Tests Lie to You (And a Systems-Engineering Fix)

The Determinism Gap: Why Your Playwright Tests Lie to You (And a Systems-Engineering Fix)

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6 min read
It Works on Office WiFi: Shipping AR to People Who Will Not Install Anything

It Works on Office WiFi: Shipping AR to People Who Will Not Install Anything

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6 min read
How to manage state in URL search params, cookies and localStorage without the glue code

How to manage state in URL search params, cookies and localStorage without the glue code

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5 min read
Shipping an Isometric Game in the Browser With Three.js

Shipping an Isometric Game in the Browser With Three.js

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2 min read
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