Statics in React

README.md

var React = require('react');

var Counter = React.createClass({
  statics: {
    ticks: 0
  },
  render() {
    return <span>{Counter.ticks++}</span>;
  }
});

module.exports = Counter;

vs

var React = require('react');

var Counter = React.createClass({
  render() {
    return <span>{Counter.ticks++}</span>;
  }
});

Timer.ticks = 0;

module.exports = Counter;

which one do you refer?