Common Custom Hook Patterns

Now that you understand the basics of custom hooks, let's explore common patterns that you'll use frequently in real applications.

Pattern 1: useToggle

The toggle pattern is perfect for boolean state like modals, dropdowns, and switches:

Pattern 2: useLocalStorage

Persist state to localStorage and sync across tabs:

Pattern 3: useDebounce

Delay updates to prevent excessive operations:

Pattern 4: useFetch

Handle data fetching with loading and error states:

Pattern 5: useClickOutside

Detect clicks outside an element (great for dropdowns and modals):

Pattern 6: useForm

Manage form state with validation:

Combining Hooks

Custom hooks can use other custom hooks:

Exercise: Create useDebounce Hook

Exercise: Create useLocalStorage Hook

Exercise: Create useFetch Hook

Key Takeaways

1. useToggle - Perfect for boolean state (modals, switches, dark mode)
2. useLocalStorage - Persist state across page reloads
3. useDebounce - Delay expensive operations until user stops typing
4. useFetch - Handle loading, error, and data states for API calls
5. useClickOutside - Close dropdowns/modals when clicking elsewhere
6. useForm - Manage form state with validation
7. Compose hooks - Build complex hooks from simpler ones
8. Keep hooks focused - Each hook should solve one specific problem