Mega Web Development Bootcamp with React Bootstrap 5, Redux, and REST API - Show Posts Data on UI by Looping All Data

The video tutorial explains how to manage state variables in React, focusing on setting values and using the map function to loop through data. It demonstrates displaying dynamic data such as post titles and bodies, and handling images when the API does not provide them. The tutorial concludes with adding a loading indicator using a ternary operator.

What is the primary purpose of a state variable in React?

• To manage dynamic data that can change over time

• To store static data

• To define component styles

• To handle API requests

Which method is used to update the value of a state variable in React?

• modifyState

• changeState

• updateState

• setState

How do you iterate over an array in React to render multiple components?

• Using a while loop

• Using a for loop

• Using the map function

• Using a do-while loop

What does the map function return when used in React?

• A new array with the same elements

• A new array with transformed elements

• A boolean value

• A single object

What data is displayed from the API in the tutorial?

• User ID and post ID

• Post title and body

• Post images

• User comments

What is used as a placeholder for missing images in the tutorial?

• A default image from the API

• A blank space

• A random image from Unsplash

• A loading icon

What is the purpose of a loading icon in React applications?

• To display error messages

• To replace missing images

• To indicate data is being fetched

• To enhance the visual appeal