developer-roadmap/src/data/question-groups/full-stack/content/react-state-management.md

In React you have two different ways to handle state, depending on the scope of the data inside that state.

If the scope is local, then you can handle it through a simple useState hook inside the component itself.

If on the other hand, you need to store a global state which is accessible for many components, then you can use something like the Context API or specific state libraries like Redux, MobX or Zustand.

The way state handling works in React (in general terms) works like this:

• State is updated via actions (e.g., event handlers).
• Updated state triggers re-renders to reflect changes in the UI.
• Avoid excessive re-renders by optimizing context or using memoization (React.memo, useMemo).