React js is an extremely fast programming language that is a powerful choice for web developers. It is based on the virtual DOM principle. It creates a virtual representation of the web page’s DOM that enables it to update content without the entire page reloading. This enables faster rendering and improved user experience.

React has two types of components: functional components and class components. Functional components are the most common type of React apps. They are used to create HTML code that contains dynamic values. Class components, on the other hand, are created in a similar manner to a JavaScript function. To create a class component, you must include the React.Component statement and a render() subclass.

React Native enables developers to build cross-platform applications. The software supports both client-side and server-side personalization. This functionality is useful for mobile applications. Moreover, developers can use a single codebase to develop their applications for different platforms. This feature also allows developers to push updates and patches across platforms.

The setState() method enables you to enqueue updates to the state of a component. This means that whenever the user interacts with a component, the state of that component is updated. It’s important to remember that a component’s state changes over time. That’s why managing state on class-based components is important.

• Code