React
Learn React by building: components, props, state, effects and lists. Every example renders live, right under the code.
- 3 modules
- 12 lessons
- 51 runnable examples
- Intermediate
Getting started
Components and JSX.
Interactivity
State and events.
Going further
Effects, forms and composition.
React quiz
Ten questions drawn at random from 34, with an explanation after every answer. Score 70% to pass; a perfect round earns a badge.
- Treasure Quest
Sail across eight islands. Each one asks a question; lose three hearts and it's back to port.
- Speed Run
Sixty seconds on the clock. Every right answer scores, and a wrong one costs five seconds.
- Code Puzzle
Real code from the lessons, shuffled line by line. Put it back in the right order.