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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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A Sleep Cycle Calculator That Accounts for Fall-Asleep Time

A Sleep Cycle Calculator That Accounts for Fall-Asleep Time

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2 min read
A Text and JSON Diff Viewer With LCS Algorithm and Semantic Comparison

A Text and JSON Diff Viewer With LCS Algorithm and Semantic Comparison

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2 min read
Top 9 JavaScript Testing Frameworks to Know in 2026

Top 9 JavaScript Testing Frameworks to Know in 2026

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11 min read
A Pomodoro Timer That Logs Every Session and Shows Weekly Stats — No Framework

A Pomodoro Timer That Logs Every Session and Shows Weekly Stats — No Framework

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2 min read
Callbacks in JavaScript

Callbacks in JavaScript

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3 min read
Building Minesweeper With a Pure-Function Game Engine and BFS Flood Fill

Building Minesweeper With a Pure-Function Game Engine and BFS Flood Fill

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3 min read
Snake With a Greedy Auto-Play AI and Immutable Game State

Snake With a Greedy Auto-Play AI and Immutable Game State

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3 min read
Building a Japanese Typing Game That Accepts Every Valid Romaji Variant

Building a Japanese Typing Game That Accepts Every Valid Romaji Variant

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3 min read
Reduce Tremendous Code Without Third-Party Solution

Reduce Tremendous Code Without Third-Party Solution

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3 min read
Unsticking Your React Tests

Unsticking Your React Tests

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3 min read
Stop Confusing Workers with Concurrency

Stop Confusing Workers with Concurrency

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6 min read
How I built a phone number reputation API in a weekend (and listed it for sale)

How I built a phone number reputation API in a weekend (and listed it for sale)

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1 min read
I built a fake review detector API because I got tired of not being able to trust product reviews

I built a fake review detector API because I got tired of not being able to trust product reviews

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1 min read
You've been writing Sumerish for years. You just didn't know it had a name.

You've been writing Sumerish for years. You just didn't know it had a name.

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2 min read
Node.js with AWS SDK v3 – A Complete Integration Guide

Node.js with AWS SDK v3 – A Complete Integration Guide

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7 min read
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