React and React Native Quiz

What is React JS?

•  A JavaScript library for building user interfaces

• A server-side framework for building web applications

• A programming language for building web applications

• A front-end framework for building mobile applications

What is the difference between state and props in React JS?

• State is data that can change over time, whereas props are data that are passed down from a parent component to a child component and are immutable.

•  Props are data that can change over time, whereas state is data that are passed down from a parent component to a child component and are immutable

• State and props are the same thing

• State and props are not used in React JS

React Native has a set of components for....

• Android Platform

• IOS Platform

• Both IOS And Android Platforms

• Neither of the above

Which of the following statements about styling in Javascript is/are true?

• Styling in Javascript uses plain old Javascript objects.

• The core components in Javascript accept a prop named style.

• It is often cleaner to use StyleSheet to define several styles in one place.

• StyleSheet creates a new style object every time it is referenced.

Which of the following statements about views in Android and iOS development is/are true?

• A view is the basic building block of UI.

• Views can be used to display text and images.

• All visual elements of an app, including buttons and text, are kinds of views.

• Views cannot contain other views.

• Views are only used for user input.

Events in React native …

• Are numerous just as those in React

• Cannot be handle if there multiple platform specific events in the same app

• Can be triggered differently according to the same touch but different gesture

• All of the above

Which of the following is an example of an HOC in React?

• useState

• useEffect

• connect (from react-redux library)

• useCallback

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