AWS, JavaScript, React - Deploy Web Apps on the Cloud - Fetch API

This video tutorial covers the use of the Fetch API in React applications. It explains how to set up state using the useState hook to store API data, and how to use the useEffect hook to make API requests. The tutorial demonstrates making asynchronous Fetch API calls, handling promises, and processing response data. It also highlights common pitfalls with useEffect and shows how to render API data in React components, ensuring each element has a unique key.

What is the primary focus of this lesson?

• Learning about the Fetch API and its integration with React

• Exploring advanced React hooks

• Setting up a new server

• Debugging React applications

What is the purpose of the useState hook in React?

• To render components conditionally

• To handle side effects

• To manage state within a component

• To fetch data from an API

Which of the following is a correct way to import the useState hook?

• import { useState } from 'react'

• import useState from 'react'

• import { useState } from 'react-dom'

• import useState from 'react-dom'

What is the role of the useEffect hook in functional components?

• To handle side effects and lifecycle events

• To render components conditionally

• To fetch data from APIs

• To manage component state

Why is it important to include an empty array as a dependency in useEffect?

• To initialize state variables

• To prevent the effect from running multiple times

• To ensure the effect runs on every render

• To pass data to the effect

What does the Fetch API return when making an asynchronous call?

• An error object

• A synchronous response

• A promise

• A callback function

How can you handle the response from a Fetch API call?

• Using a callback function

• Using a promise with then()

• Using a synchronous function

• Using a try-catch block

What is the purpose of using a unique key in a list of React elements?

• To fetch data for each element

• To uniquely identify each element

• To render elements conditionally

• To style the elements

What happens if you forget to include a unique key in a list of elements?

• The elements will render twice

• The elements will not render

• React will throw a warning

• The application will crash

What did the lesson demonstrate about handling API requests in React?

• How to handle synchronous API requests

• How to use third-party libraries for API requests

• How to debug API requests

• How to use the Fetch API and update state