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React JS Masterclass - Go From Zero To Job Ready - Methods / 089

React JS Masterclass - Go From Zero To Job Ready - Methods / 089

Assessment

Interactive Video

•

Information Technology (IT), Architecture

•

University

•

Practice Problem

•

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains how to calculate the total for a cart list by creating a function that updates the total whenever items are added or removed. It covers the use of dispatch for state management and demonstrates testing and debugging of the functionality. Additionally, it discusses implementing conditional rendering to show different buttons based on the cart's state.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial step in calculating the total for a cart list?

Ignore the cart list and calculate manually

Access the cart list and iterate over each product

Directly set a fixed total value

Use a constant value for total

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to update the total when items are added or removed from the cart?

To avoid using functions

To keep the total constant

To ensure the total reflects the current state of the cart

To make the cart list static

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of dispatch in updating the cart total?

It deletes the cart list

It adds new items to the cart

It sends the updated total to the reducer

It resets the total to zero

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the total calculation tested on the website?

By adding and removing items to see if the total updates

By refreshing the page

By using a static list of products

By checking the console for errors

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the total when the page is refreshed?

The total is calculated automatically

The total doubles

The total resets to zero

The total remains unchanged until items are added or removed

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What condition is checked to toggle between 'Add to Cart' and 'Remove from Cart' buttons?

The availability of the product

The total number of products

The price of the product

Whether the product is already in the cart

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the useEffect hook help in managing the cart button state?

It checks the cart list for the product's presence

It resets the cart list

It removes all products from the cart

It automatically adds products to the cart

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