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Javascript

93 articles on Javascript — each with a runnable playground and a quiz.

Articles

JavaScript

getCurrentPosition() Doesn't Just Check — It Prompts

Sep 26 · 5 min JavaScript

localStorage Isn't Free — It's Blocking Your Main Thread

Sep 26 · 5 min JavaScript

JSON.stringify Is Quietly Deleting Your File Uploads

Sep 26 · 5 min JavaScript

The Background Task That Waited 40 Seconds for 'Idle'

Sep 26 · 6 min Vue

Vue Composables: The Shared State Trap (+ Cheat Sheet)

Sep 22 · 13 min Nextjs

Next.js proxy.ts Explained (with Cheat Sheet)

Sep 22 · 12 min React

React Derived State: Why That useState Is Probably a Bug

Sep 20 · 14 min JavaScript

Your Browser Is Rejecting Every Drop On Purpose

Sep 20 · 6 min Nuxt

Nuxt Hydration Mismatch: Why It Happens and How to Fix It

Sep 20 · 14 min JavaScript

Chrome Already Has The Eyedropper You're Building

Sep 20 · 5 min JavaScript

Stop Debouncing Resize. The Browser Already Watches It.

Sep 17 · 6 min JavaScript

Your Fetch Already Streams. You're Buffering It Anyway.

Sep 16 · 5 min
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