React UI Components 8 questions.
The approach, the solution, and what usually goes wrong.
Star rating
easy · state, events, render-props
Stopwatch
easy · useEffect, timers, cleanup
Toggle switch
easy · controlled-components, css, accessibility
Pagination
medium · render-props, useMemo, component-api
Infinite scroll
medium · IntersectionObserver, refs, useEffect
File explorer tree
medium · recursion, nested-state, immutability
Popover
medium · context, compound-components, refs
Memory game
medium · state-machine, timers, derived-state