Create a simple React application

Our js files will live in app/Resources/js/. Lets create a component.js file with a React component and a app.js file which will mount this component.

app/Resources/js/app.js

import React from 'react';
import Component from './component.js';

React.render(<Component/>, document.getElementById('app'));

app/Resources/js/component.js

import React from 'react';

var Component = React.createClass({
    render: function () {
        return (
            <h1>
                Hello world!
            </h1>
        );
    }
});

export default Component;