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State Management and Context
Content
- State Management and Context
- State Management
- State in Class-Based Components
- State in Functional Components
- Context API
- Updated on 10/09/2024
- 450 Views
State Management
State management refers to how you handle the data that affects the behavior and rendering of your application. React’s built-in state management is usually sufficient for small applications.
State in Class-Based Components
State is managed using this.state and updated using this.setState().
State in Functional Components
Use the useState hook to manage state in functional components.
Context API
The Context API is used to pass data through the component tree without having to pass props down manually at every level. Create a context with React.createContext(), provide it with a Provider component, and consume it with useContext or Context.Consumer.
Activity
Create a React application that uses both state management and the Context API. Implement a theme toggle feature where the theme is managed through context and updated with state.
Quiz
1. What hook is used for state management in functional components?
- a) useState
- b) useContext
- c) useReducer
- d) useEffect
2. True or False: The Context API allows you to pass data through the component tree without using props.
- a) True
- b) False
3. Which method is used to create a context in React?
- a) createContext()
- b) useContext()
- c) createProvider()
- d) createState()
4. In the Context API, which component provides the context value to its children?
- a) Context.Consumer
- b) Context.Provider
- c) Context.ProviderValue
- d) Context.ProviderChildren
5. True or False: You can use both the Context API and state management together in a React application.
- a) True
- b) False