gistfile1.js

//= require superagent
 
"use strict";
 
function poll(fn) {
  return superagent.get("/leaderboards/3c3c4514-ac4c-4b45-a054-2a3baa237ac9", fn);
} 

var Leaderboard = React.createClass({
  getInitialState : function() {
    return {
      rungs : []
    };
  },
  
  dealWithResponse: function(res) {
    this.setState({rungs: res.body.rungs});
  },
  
  componentWillMount: function() {
    poll(this.dealWithResponse);
  },
  
  render: function() {
    var rungs = this.state.rungs.map(function(d) { return <li>{d.player_id}</li>; });
 
    return (
      <div className="leaderboard">
        {rungs}
      </div>
    )
  }
});
 
React.render(
  <Leaderboard />,
  document.getElementById("app")
);