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← All coursesHow React Works6 levels · 28 lessons

JSX is a function call~9 min
Props, state, and identity~8 min
Render and commit~7 min
Where your state actually lives~8 min
The Rendering Model · Review~5 min

The rules of hooks, and why~9 min
Effects against the lifecycle~9 min
Custom hooks as contracts~7 min
The dependency you refuse to add~7 min
How Hooks Work · Review~5 min

Refs & the DOM~8 min
Lifecycle edge cases~6 min
Advanced hook patterns~7 min
Escape Hatches · Review~5 min

Concurrent rendering~8 min
Suspense boundaries~7 min
Transitions in anger~7 min
Hidden, not unmounted~7 min
Concurrency · Review~5 min

Memo & referential identity~8 min
When memoization lies~7 min
Context and the re-render blast radius~7 min
The compiler already did this~7 min
Performance · Review~5 min

Server components~8 min
Forms and actions~8 min
Boundaries in practice~7 min
Server & Forms · Review~5 min

Course

How React Works

How React renders, stores state, schedules work and decides what to re-render.

Start free: JSX is a function call