Master Frontend
Development Skills

Frontend Dummies is a single-author site about the layer underneath the frameworks. Most material stops at the API surface — it tells you what Array.prototype.map does, but not what happens when you implement it yourself, or why the browser stalls when you get the critical rendering path wrong.

Everything here is organised around closing that gap. The challenges are components and utilities you build from scratch, each with a written explanation, the edge cases naive implementations miss, and a runnable demo. The articles are long-form notes on how the browser actually works — the rendering pipeline, the event loop, web security, performance.

It is written for developers preparing for interviews, and for anyone who has shipped React for a couple of years and wants to understand what is happening beneath it.