A JavaScript example

react-dom.js

Hello = React.createClass({
  componentWillMount: function() { console.log('componentWillMount') },
  componentDidMount:  function() { console.log('componentDidMount') },

  render: function() {
    return DOM.div({ class: 'container' }, [
      DOM.span({
        data: {
          foo: { bar: 'baz' },
          much: { much: 'fun' },
        },
        class: 'test'
      }, 'Hello ' + this.props.name),

      DOM.span(', goodbye.')
    ])
  }
})

React.renderComponentToString(Hello({ name: 'World' }))