QNA

In React, controlled components refer to components that have their state and behavior controlled by the parent component. These components rely on props passed down from the parent component to update their state and behavior. Uncontrolled components refer to components that manage their own state internally.

propTypes is used for props validation. If some of the props aren't using the correct type that we assigned, we will get a console warning. After we specify validation patterns, we will set App. defaultProps.

NodeJS is a framework of JavaScript which is mainly used for working with the backend of our application or building the backend using JavaScript, whereas ReactJS is a JavaScript front-end library. It is mainly used for building the user interface or the frontend of our application.

A custom Hook is a JavaScript function that begins with use. It is not mandatory to begin the custom Hook name with “use,” but without it, React would be unable to check for violations of the Hooks rules automatically. Therefore, it is critical to adhere to that naming convention.

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