Understanding React setState: Features, Usage, and Best Practices
In React, setState is a core method used to update a component’s state and trigger re-renders in class components. It operates asynchronously, allowing React to batch multiple state updates for optimized performance. With setState, you can either pass an object or a function, providing flexibility in how state is updated, especially when previous state values are needed. Understanding its behavior, including how it merges state and triggers re-renders, is crucial for effective state management. In functional components, useState offers similar functionality. Mastering setState is key to handling state changes in React’s lifecycle methods, event handlers, and beyond.
