Having a good understanding of React will help you build fast and easy applications. The technology combines JavaScript and HTML-like syntax to create dynamic web content. It has become one of the most popular web development tools. There is also a large community of developers and a range of IDEs, component libraries, tools and extensions.

React JS is an open source framework that allows developers to write UI components using JavaScript. The technology also uses the Virtual DOM, which enables components to keep track of their state. It then finds the least expensive way to update the DOM.

React can be used to create dynamic web content, including photo slideshows, interactive forms, and animated graphics. In addition, it can be integrated into existing web applications. Its reusability feature enables you to reuse components throughout the application, reducing development time and effort.

React applications are easy to write and test. There is no need to worry about rewriting or editing your code after the initial implementation. Instead, you can see the result immediately. Unlike other frameworks, React updates its components only when they change. This results in fast and high-performance applications.

There are two types of components in React applications – functional and class components. Functional components are the most common components used in React apps. They allow for significant data changes to transform specific UI elements automatically.

React also features a reusability feature, which helps combat component dependency issues. Typically, event handlers update the state of components.