A simple countdown timer example in ES6, React and Reflux.

timer.jsx

import React from 'react'
import Reflux from 'reflux'

var TimeActions = Reflux.createActions(['tick'])

var TimeStore = Reflux.createStore({
  listenables: [TimeActions],

  onTick: function(tick) {
    this.trigger(tick);

    if (tick === 0) return;

    setTimeout(() => TimeActions.tick(tick - 1), 1000);
  }
})

var Watch = React.createClass({
  mixins: [Reflux.connect(TimeStore, 'tick')],

  componentDidMount: function() {
    TimeActions.tick(this.props.ticks)
  },

  render: function() {
    return (
      <h1>{this.state.tick}</h1>
    )
  }
})

React.render(<Watch ticks={10}></Watch>, document.body);

export default {}