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Week 3: React Component Patterns

This week focuses on production UI habits: predictable state, resilient rendering, accessibility, and maintainable component boundaries.

Learning Objectives

  • Separate display concerns from data concerns.
  • Handle loading, empty, error, and success states consistently.
  • Improve UX without architecture drift.
  • Build mobile-safe and keyboard-accessible interactions.

Detailed Topics

1. State Modeling for UI Reliability

Encourage explicit UI state modeling. Avoid implicit assumptions by making state transitions visible in rendering logic.

2. Component Composition in Existing Design Systems

Teach extension over reinvention: reuse existing primitives and patterns before introducing new abstractions.

3. Error UX and Recovery Paths

A production UI should explain what failed and offer the next action clearly, such as retry, edit input, or support path.

Pair Session Plan (90 Minutes)

  1. Pick one product, cart, or account component.
  2. Add resilient loading and empty treatment.
  3. Improve an error state with clear user guidance.
  4. Verify keyboard access and responsive behavior.

Independent Ticket

Deliver one UI enhancement with before/after screenshots and a short note describing state management choices.

Mentor Checkpoint

  • Student can justify state boundaries in review.
  • Student avoids logic duplication across components.
  • Student includes accessibility checks by default.

Helpful Resources

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