--- id: getting-started title: Getting Started next: tutorial.html redirect_from: "docs/index.html" --- ## JSFiddle The easiest way to start hacking on React is using the following JSFiddle Hello World examples: * **[React JSFiddle](https://jsfiddle.net/reactjs/69z2wepo/)** * [React JSFiddle without JSX](https://jsfiddle.net/reactjs/5vjqabv3/) ## Starter Kit Download the starter kit to get started. <div class="buttons-unit downloads"> <a href="/react/downloads/react-{{site.react_version}}.zip" class="button"> Download Starter Kit {{site.react_version}} </a> </div> In the root directory of the starter kit, create a `helloworld.html` with the following contents. ```html <!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>Hello React!</title> <script src="build/react.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"></script> </head> <body> <div id="example"></div> <script type="text/babel"> ReactDOM.render( <h1>Hello, world!</h1>, document.getElementById('example') ); </script> </body> </html> ``` The XML syntax inside of JavaScript is called JSX; check out the [JSX syntax](/react/docs/jsx-in-depth.html) to learn more about it. In order to translate it to vanilla JavaScript we use `<script type="text/babel">` and include Babel to actually perform the transformation in the browser. ### Separate File Your React JSX code can live in a separate file. Create the following `src/helloworld.js`. ```javascript ReactDOM.render( <h1>Hello, world!</h1>, document.getElementById('example') ); ``` Then reference it from `helloworld.html`: ```html{10} <script type="text/babel" src="src/helloworld.js"></script> ``` Note that some browsers (Chrome, e.g.) will fail to load the file unless it's served via HTTP. ### Offline Transform First install the [Babel](http://babeljs.io/) command-line tools (requires [npm](https://www.npmjs.com/)): ``` npm install --global babel ``` Then, translate your `src/helloworld.js` file to plain JavaScript: ``` babel src --watch --out-dir build ``` The file `build/helloworld.js` is autogenerated whenever you make a change. Read the [Babel CLI documentation](http://babeljs.io/docs/usage/cli/) for more advanced usage. ```javascript{2} ReactDOM.render( React.createElement('h1', null, 'Hello, world!'), document.getElementById('example') ); ``` Update your HTML file as below: ```html{7,11} <!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>Hello React!</title> <script src="build/react.js"></script> <!-- No need for Babel! --> </head> <body> <div id="example"></div> <script src="build/helloworld.js"></script> </body> </html> ``` ## Want CommonJS? If you want to use React with [browserify](http://browserify.org/), [webpack](https://webpack.github.io/), or another CommonJS-compatible module system, just use the [`react` npm package](https://www.npmjs.com/package/react). In addition, the `jsx` build tool can be integrated into most packaging systems (not just CommonJS) quite easily. ## Next Steps Check out [the tutorial](/react/docs/tutorial.html) and the other examples in the starter kit's `examples` directory to learn more. We also have a wiki where the community contributes with [workflows, UI-components, routing, data management etc.](https://github.com/facebook/react/wiki/Complementary-Tools) Good luck, and welcome!