Local vs. Global State in React
In React, state management is crucial for building interactive applications. However, depending on the scale of the application, we may need different approaches to manage state. Below, we'll explore the difference between local state (using useState) and global state (using Context API or Redux).
Synopsis:
Local state is managed within a single component using the useState hook. This state is private and only available in the component where it's declared. In contrast, global state is managed using tools like the Context API or libraries such asRedux, allowing multiple components to access the same data.
- 1. Local State:
Declared and managed within a single component using useState.
- 2. Global State:
Shared among multiple components, which can be achieved through Context API or Redux.
- 3. When to Use:
We use local state when only one component needs to manage its own state. We use global state when multiple components need to access and modify the same state.
Purpose:
- Local state is ideal for managing values within a single component.
- Global state is suitable when different components need to share the same state.
- Using the appropriate state can improve application efficiency and scalability.
Exercises
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