AWS, JavaScript, React - Deploy Web Apps on the Cloud - UseContext Hook and UseReducer Hook in React

The video tutorial explains how to create a cart context in React to manage the state of a shopping cart. It covers setting up a cart context provider, creating an add product function, and using context values. The tutorial also demonstrates how to implement the useContext hook in components and create a reducer for state management. Finally, it includes testing and debugging the implementation, providing a foundation for more advanced state management techniques like Redux.

What is the primary purpose of creating a cart context provider in a React application?

• To manage the initial state of a shopping cart

• To style the application components

• To handle user authentication

• To manage API requests

How does the cart context provider make the context available to the entire application?

• By using a service worker

• By wrapping the app component

• By using a global variable

• By importing it in every component

What is the role of the 'add product' function in the cart context?

• To update the user profile

• To add items to the cart

• To fetch product details

• To remove items from the cart

Which React hook is used to access the cart context in a component?

• useEffect

• useState

• useReducer

• useContext

What is the purpose of the 'useContext' hook in React?

• To perform side effects

• To handle form submissions

• To access context values

• To manage component lifecycle

What is a reducer function used for in the context of managing state?

• To handle user input

• To render UI components

• To modify the state based on actions

• To fetch data from an API

In a reducer, what does the 'action' parameter typically represent?

• A list of components

• The current state

• A function to update the state

• An object describing the change

Which React hook is used to integrate a reducer with a context?

• useState

• useReducer

• useContext

• useEffect

What does the 'dispatch' function do in the context of a reducer?

• It renders the component

• It initializes the state

• It sends actions to the reducer

• It fetches data from the server

How does the 'useReducer' hook help in managing complex state logic?

• By providing a simple state variable

• By allowing side effects

• By enabling state updates through actions

• By automatically fetching data