Introduction to Custom Hooks and Core Concepts
Explore how to create and use custom Hooks in React 19 to encapsulate reusable logic. Understand the rules and naming conventions to improve code clarity, reduce duplication, and build scalable, maintainable applications by separating behavior from UI rendering.
When applications grow, we begin to notice a recurring pattern: the same logic appears in multiple components. Data fetching, form handling, event subscriptions, and state coordination often get repeated with slight variations. At this stage, the challenge is no longer how to write logic, but how to structure it so that it remains reusable, readable, and maintainable. This is where custom Hooks become essential.
Problem: Logic duplication in components
In real applications, it is common to duplicate logic across components.
The cause is ...