React JS is an open source web framework that provides a streamlined way to build interactive UIs. React allows you to develop applications that are compatible with many different platforms.

The framework uses the Document Object Model (DOM) to create a tree-like model of the HTML document. This tree is used to display the output of the web page. Each node is an HTML element.

The DOM is updated when values change. React updates the DOM as needed and minimizes the number of reloads. It avoids layout trashing and makes it faster to update the DOM.

React is also easy to use and has a minimalist learning curve. Developers can start by adding simple components. They can then move those simple components to wrapper components.

State is a major concept in React. A state is an object that keeps track of data changes over time. By controlling state, developers can create interactive web applications.

Users can add and update state with callback functions. For example, if a user clicks an icon, the action is triggered to re-render the image. When changing a component’s state, React finds the least expensive way to update the DOM.

To avoid reloading the entire DOM when a value is updated, the library is designed to render the components that change. All of the other components can then directly access the data they need without the need to re-render.

While there is a learning curve for switching from other web development frameworks, the React framework has a simpler learning curve than other frameworks.

Check: https://www.guglytech.com/web-development/experience-the-power-of-uigstudio-for-ui-development/