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React Interview Labs

Build one production-minded Interview Prep Tracker across thirteen checkpoints. The course emphasizes React's runtime model, state ownership, effects, accessibility, testing, performance, and architecture—not API trivia.

Open the application Start the course

Learning loop

  1. Predict the render and state behavior.
  2. Build the smallest coherent change.
  3. Verify behavior, types, tests, and accessibility.
  4. Explain the mechanism without hiding behind terminology.
  5. Defend a rejected alternative and name evidence that would change your choice.

The repository includes a completed reference app. Recreate each checkpoint before comparing implementations.