The React add-ons are a collection of useful utility modules for building React apps. These should be considered experimental and tend to change more often

We've tried to make React as environment-agnostic as possible. People use React in a variety of languages (JavaScript, TypeScript, ClojureScript, etc) and in a variety of environments

by Pete Hunt React is, in my opinion, the premier way to build big, fast Web apps with JavaScript. It has scaled very well for us at Facebook

Note: cloneWithProps is deprecated. Use React.cloneElement instead. In rare situations, you may want

So far, we've looked at how to write a single component to display data and handle user input. Next let's examine one of React's finest features: composability.

In most cases, you can use the key prop to specify keys on the elements you're returning from render. However, this breaks down in one situation:

React provides a ReactTransitionGroup add-on component as a low-level API for animation, and a ReactCSSTransitionGroup for easily implementing basic

JSX is a JavaScript syntax extension that looks similar to XML. You can use a simple JSX syntactic

If your React component's render function is "pure" (in other words, it renders the same result given the same props and state), you can use this mixin for a performance boost

One of the great things about React is that it doesn't require the DOM as a dependency, which means it is possible to render a React application on the server and send the