What is Babel in React js?
Babel, is a JavaScript compiler that converts latest JavaScript like ES6, ES7 into plain old ES5 JavaScript that most browsers understand.
What is the use of Webpack?
Webpack in basically is a module builder. It is mainly runs during the development process.
What is Context?
React context helps you to pass data using the tree of react components. It helps you to share data globally between various react components.
What are reacted portals?
Portal allows you to render children into a DOM node. CreatePortalmethod is used for it.
Explain strict mode
Strict Mode allows you to run checks and warnings for react components. It runs only on development build. It helps you to highlight the issues without rendering any visible UI.
What is the use of empty tags <> ?
Empty tags are used in React for declaring fragments.
Explain error boundaries?
Error boundaries help you to catch Javascript error anywhere in the child components. They are most used to log the error and show a fallback UI.
What are children prop?
Children props are used to pass component to other components as properties. You can access it by using {props.children}
Explain the use of ‘key’ in react list
Keys allow you to provide each list element with a stable identity. The keys should be unique.
What is ‘create-react-app’?
‘create-react-app’ is a command-line tool which allows you to create one basic react application.