AWS, JavaScript, React - Deploy Web Apps on the Cloud - React Components, Props, and Callbacks

The video tutorial explains the concept of building applications using reusable components in React. It describes how the app component acts as the root, with child components forming a tree structure similar to the HTML DOM. The tutorial focuses on the communication between parent and child components using props, a one-way data flow mechanism. It also covers how child components can communicate back to parent components using callback functions. The video concludes with a brief overview of these concepts and a preview of the next video, which will demonstrate these mechanisms in action.

What is the main purpose of using components in a React application?

• To increase the size of the application

• To encourage reusability across different parts of the application

• To make the application look more complex

• To make the application run slower

How does data flow from a parent component to a child component in React?

• Through a two-way binding mechanism

• Via a one-way mechanism known as props

• Using global variables

• By directly modifying the child's state

Which of the following can be passed as props in React?

• Only numbers

• Only functions

• Only strings

• Primitives, arrays, JSON objects, and functions

How does a child component communicate back to a parent component in React?

• Using callback functions passed as props

• By directly modifying the parent's state

• By sending HTTP requests

• Through a global event bus

What is the term used in React for the circular motion of data using props and callbacks?

• Props forward callback

• Data loop

• Props backward callback

• Circular data flow