It does a slow runtime code transformation, so we’d only recommend using this for simple demos. If you prefer to use your own text editor, you can also download this HTML file, edit it, and open it from the local filesystem in your browser. Try a Hello World template on CodePen, CodeSandbox, or Stackblitz. If you’re interested in playing around with React, you can use an online code playground.

Whether you want to get a taste of React, add some interactivity to a simple HTML page, or start a complex React-powered app, the links in this section will help you get started. React has been designed from the start for gradual adoption, and you can use as little or as much React as you need. Learn what React is all about on our homepage or in the tutorial. React is a JavaScript library for building user interfaces. This page is an overview of the React documentation and related resources.