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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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JSON vs YAML: Which Data Format Should You Use?

JSON vs YAML: Which Data Format Should You Use?

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4 min read
Compress PDF to 200KB and Convert JPG to PDF in the Browser (No Upload, Free)

Compress PDF to 200KB and Convert JPG to PDF in the Browser (No Upload, Free)

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4 min read
CĂłmo solucionar el error \"Enable JavaScript and cookies to continue\"

CĂłmo solucionar el error \"Enable JavaScript and cookies to continue\"

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3 min read
useFieldArray is not updating across steps — and why it can't

useFieldArray is not updating across steps — and why it can't

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4 min read
How I Cut a 2.1 MB JavaScript Bundle to 890 KB With Claude Code

How I Cut a 2.1 MB JavaScript Bundle to 890 KB With Claude Code

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7 min read
Why your JSON and Regex tools shouldn't send data to a backend (and how I built a zero-leak client suite)

Why your JSON and Regex tools shouldn't send data to a backend (and how I built a zero-leak client suite)

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2 min read
The Lottielab watermark is layer 12345679

The Lottielab watermark is layer 12345679

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4 min read
A Simple CI/CD Pipeline That Actually Works

A Simple CI/CD Pipeline That Actually Works

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3 min read
Next.js Partial Prerendering: A Senior Engineer's Guide

Next.js Partial Prerendering: A Senior Engineer's Guide

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3 min read
How I Built an In-Browser AI Workout Tracker Using React and MediaPipe 🏋️‍♂️🤖

How I Built an In-Browser AI Workout Tracker Using React and MediaPipe 🏋️‍♂️🤖

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3 min read
My tests could fail. They still could not tell me I was wrong.

My tests could fail. They still could not tell me I was wrong.

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5 min read
Building a Game Deals Platform: From Store Data to Price Comparison

Building a Game Deals Platform: From Store Data to Price Comparison

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2 min read
Building a Better Understanding of Calorie Calculators: From Inputs to Daily Energy Estimates

Building a Better Understanding of Calorie Calculators: From Inputs to Daily Energy Estimates

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2 min read
44 Thumbnails With the Wrong Hair Color: A One-Line Bug and the 300 Lines It Took to Pay It Back

44 Thumbnails With the Wrong Hair Color: A One-Line Bug and the 300 Lines It Took to Pay It Back

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21 min read
Comparing prices across retailers is a unit-normalization problem, not a scraping problem

Comparing prices across retailers is a unit-normalization problem, not a scraping problem

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4 min read
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