- This post addresses the challenge of using setInterval with React Hooks, highlighting the inherent mismatch between React's declarative model and setInterval's imperative nature.
- The key solution is a custom `useInterval` Hook that leverages `useRef` to hold a mutable callback reference, allowing the interval to always use the latest props and state without resetting the timer.
- The `useInterval` Hook accepts a dynamic delay parameter, enabling automatic interval adjustment when the delay changes, and supports pausing by passing `null` as the delay.
- Unlike traditional class-based implementations, the Hook-based approach eliminates complexity for dynamic delays and provides a cleaner declarative API.
- The post demonstrates that hooks can create powerful declarative abstractions like `useInterval`, which simplify complex behaviors such as controlling one interval's delay with another.