Creating Custom Hooks in React

Why Custom Hooks?

Custom hooks allow you to extract component logic into reusable functions, making your code more maintainable and DRY.

Building Your First Custom Hook

function useToggle(initialState = false) {
  const [state, setState] = useState(initialState);
  const toggle = () => setState(!state);
  return [state, toggle];
}

Common Use Cases

1. Form Handling

Create a hook to manage form state and validation.

2. API Calls

Abstract data fetching logic into a reusable hook.

3. Event Listeners

Manage window event listeners in a custom hook.

Best Practices

Always prefix your hook with "use" and ensure it follows the rules of hooks.