Component Composition

Component composition is the practice of building complex UIs by combining simpler components. It's a fundamental pattern in React that promotes reusability and maintainability.

What is Composition?

Composition means building larger components from smaller ones, like building with LEGO blocks:

Specialization Pattern

Create specialized versions of generic components:

Containment Pattern

Components that don't know their children ahead of time:

Slot Pattern

Named slots for complex layouts:

Render Props Pattern

Passing functions as children for dynamic rendering:

Exercise: Build a Card System

Exercise: Specialized Alert Components

Key Takeaways

1. Build from small pieces - Create small, focused components
2. Specialization - Create specific variants from generic components
3. Containment - Use children for flexible content
4. Slots pattern - Named props for multiple content areas
5. Reusability - Composed components are easier to reuse and test