Creating Custom Hooks

What is a Custom Hook?

A custom Hook is a JavaScript function whose name starts with use and that can call other React Hooks.

Custom Hooks allow developers to extract reusable stateful logic without sharing the same component UI.

When Should You Create One?

• The same stateful logic is needed by multiple components.
• Browser event handling is repeated.
• API loading logic needs to be reused.
• Complex form behavior is shared.

Important Concept

A custom Hook shares logic, not component state itself. Each component calling the Hook normally receives its own state unless the Hook uses a shared external source.