React Performance
Find out what is actually slow before optimising, then use memo, useMemo, useCallback and list virtualisation deliberately rather than by reflex.
4 chapters1 code exercises8 quiz questions18 min
Advanced React Tutorials
Master memoization, Suspense and transitions, error boundaries, portals, TypeScript with React, and testing components the way users use them.
Suspense and Transitions
Declare loading states with Suspense, keep the interface responsive with transitions and deferred values, and lazy load components without jank.
4 chapters1 code exercises8 quiz questions17 min
Error Boundaries
Stop one broken component taking down the whole app: write an error boundary, understand exactly what it can and cannot catch, and design sensible recovery.
4 chapters1 code exercises8 quiz questions14 min
Portals and Rendering Control
Render outside the DOM hierarchy with portals, build accessible modals, and understand what Strict Mode is really checking.
4 chapters1 code exercises8 quiz questions14 min
React with TypeScript
Type props, children, events, hooks and refs the way experienced React teams do, and learn which patterns to avoid.
4 chapters1 code exercises8 quiz questions16 min
Testing React Components
Write tests that survive refactors: query the way users do, simulate real interaction, handle async updates, and know what is worth mocking.
4 chapters1 code exercises8 quiz questions16 min