React JS Masterclass - Go From Zero To Job Ready - Reducers: Add and Remove / 093

The video tutorial explains how to manage a shopping cart in a React app using Redux. It covers accessing the store, implementing add and remove functionalities, updating the cart list and total, and using hooks like useDispatch and useSelector for state management. The tutorial also demonstrates how to handle actions and payloads to update the cart state effectively.

What is the purpose of the 'useDispatch' hook in React Redux?

• To select state from the Redux store

• To dispatch actions to the Redux store

• To access the Redux store directly

• To create a new Redux store

What is the first step in using the 'useDispatch' hook?

• Importing it from 'react-redux'

• Resetting the store

• Creating a new Redux store

• Selecting a state from the store

How do you update the cart list in Redux?

• By replacing the entire state

• By concatenating new items to the existing list

• By deleting the old list and creating a new one

• By using a temporary variable

What is the role of 'action.payload' in updating the total?

• It is used to reset the total

• It stores the current total value

• It contains the price of the product to be added

• It holds the list of all products

Which hook is used to access the Redux state in a component?

• useEffect

• useSelector

• useState

• useDispatch

What does the 'useSelector' hook return?

• The entire Redux store

• A function to dispatch actions

• A new Redux store

• The selected state from the Redux store

What is the purpose of the 'useSelector' hook in a cart page?

• To reset the cart state

• To create a new cart list

• To access and display cart items and total

• To dispatch actions to the store

How is the 'remove' function implemented in Redux?

• By filtering out the item from the cart list

• By adding the item back to the list

• By updating the item quantity to zero

• By resetting the entire cart list

What happens to the total when an item is removed from the cart?

• It remains the same

• It increases by the item's price

• It decreases by the item's price

• It resets to zero

Which method is used to keep items in the cart that do not match the removed item's ID?

• filter

• map

• reduce

• forEach