Writing

Writing to understand how things work

JavaScript Event Loop Series: Building the Event Loop Mental Model from Experiments

3 March 2026

JavaScript’s event loop often feels magical—until it breaks your expectations. This series builds a precise mental model of how JavaScript actually runs, from tasks and microtasks to rendering and real UI behavior.

The JavaScript Runtime: Fixing the Mental Model

3 March 2026

Why doesn’t setTimeout interrupt your code? This article breaks the illusion: JavaScript runs synchronously, and async APIs don’t interrupt. Instead, they schedule.