gistfile1.js

/** @jsx React.DOM */
var MyComponent = React.createClass({
  getInitialState: function() {
    // set up the initial state. used for "logical" initialization code
    return {perMinute: '-', perDay: '-'};
  },
  componentDidMount: function() {
    // fired only once, when the component is added to the DOM
    // used for initialization code that has "side effects" i.e. i/o, jquery plugins, etc
    var socket = io.connect(this.props.url);
    // assuming that the data coming back has perMinute and perDay keys, this will just work.
    // if it doesn't, just pass a callback that will eventually call setState() with the right
    // values
    socket.on('business.clickout', this.setState.bind(this));
  },
  render: function() {
    var perMinute = this.state.perMinute;
    var perDay = this.state.perDay;
    return (
      <div>
        <h3>Clickouts</h3>
        <p>last Minute: {perMinute}</p>
        <p>today: {perDay}</p>
      </div>
    );
  }
});

React.renderComponent(
  <MyComponent url="http://localhost:3000" />,
  document.getElementById('domid')
);

Thanks!