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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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qrdrop: what 'no server' forces you to build

qrdrop: what 'no server' forces you to build

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9 min read
The Beginning of My Competitive Programming Journey

The Beginning of My Competitive Programming Journey

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1 min read
String Allocation Pitfalls: How to Convert Java Char to String Efficiently

String Allocation Pitfalls: How to Convert Java Char to String Efficiently

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3 min read
I built a free iLovePDF alternative with zero backend

I built a free iLovePDF alternative with zero backend

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1 min read
EventSource can't POST. Your LLM stream needs it to.

EventSource can't POST. Your LLM stream needs it to.

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5 min read
Your LLM returned almost-valid JSON. Stop hand-patching it.

Your LLM returned almost-valid JSON. Stop hand-patching it.

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5 min read
10 Tips to Improve Performance in React Native Apps

10 Tips to Improve Performance in React Native Apps

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6 min read
Claude Code Permission Modes in 2026: What `--allowedTools`, Whitelists, and Sandbox Boundaries Actually Restrict

Claude Code Permission Modes in 2026: What `--allowedTools`, Whitelists, and Sandbox Boundaries Actually Restrict

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12 min read
The Extension You Vetted Is Not the One That Auto-Updates

The Extension You Vetted Is Not the One That Auto-Updates

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5 min read
What If Reactive Execution Doesn't End at Rendering?

What If Reactive Execution Doesn't End at Rendering?

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9 min read
Spark DataFrames vs Pandas: Choosing the Right Tool for the Job

Spark DataFrames vs Pandas: Choosing the Right Tool for the Job

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4 min read
Why My React State Kept "Working" — Until Two Tabs Opened at Once

Why My React State Kept "Working" — Until Two Tabs Opened at Once

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3 min read
Exploiting Error.prepareStackTrace and Prototype Pollution to Invoke JavaScript Functions Without Parentheses

Exploiting Error.prepareStackTrace and Prototype Pollution to Invoke JavaScript Functions Without Parentheses

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13 min read
How I Made Instant Lookup Across 246,000 Words Work Entirely in the Browser (No Backend)

How I Made Instant Lookup Across 246,000 Words Work Entirely in the Browser (No Backend)

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3 min read
Why most cookie-banner blockers don't actually work

Why most cookie-banner blockers don't actually work

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4 min read
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