Developed by Facebook engineer Jordan Walke, React JS is a JavaScript library designed to help developers create UIs for web applications. It is designed to be easy to use and can be easily deployed by anyone with a basic knowledge of JavaScript. React is a popular choice for developing innovative websites and mobile apps.

React provides state of the art functionality, including fast page rendering. In addition, the framework is highly productive. It uses the Virtual DOM to monitor component state and find the least expensive way to update the DOM. It also provides built-in hooks that allow developers to update default browser actions without reloading the entire page.

React JS uses the JSX extension of JavaScript, which embeds HTML functionality directly into JavaScript code. This allows developers to build high-volume applications that combine HTML markup with JavaScript logic. It also allows developers to write custom components.

The React JS framework also uses the SyntheticEvent wrapper to replace the native Event interface. The wrapper allows developers to build a better, more flexible event-driven UI.

There are many benefits to using React JS, including a smaller library size. It also allows developers to use JavaScript to build user interfaces for most platforms. It’s also easy to test your code. You can even communicate with the server in record time with React.

You can build complex UI interactions with React JS. You can do this using hooks, which are a modern way to handle state. The key to using hooks effectively is to call the top-level event rather than sub-events.