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              <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.6.0/moment.min.js"></script>
<script type="text/jsx">
/** @jsx React.DOM */
'use strict';




// A simple class to capture a one-way value transform function.
var ValueTransformer = function (transform) {
  this.func = (typeof transform === 'function') 
  ? transform 
  : function (value) { return value.toString ? value.toString() : value; }
};

// Transforms the input value according to the pre-defined transform function
ValueTransformer.prototype.getTransformedValue = function (value) {
  return this.func.call(null, value);
};




// Define some value transforms
// ----------------------------
  
var timeTransform = new ValueTransformer(function (date) {
  return moment(date).format('h:mm:ss a');
});

var militaryTimeTransform = new ValueTransformer(function (date) {
  return moment(date).format('HH:mm:ss');
});

var microTimeTransform = new ValueTransformer(function (date) {
  return moment(date).format('HH:mm:ss:SSS');
});

var myCustomTransform = new ValueTransformer(function (date) {
  return <span>
    <h4>{date.getHours()}</h4>
    <h3>{date.getMinutes()}</h3>
    <h2>{date.getSeconds()}</h2>
    <h1>{date.getMilliseconds()}</h1>
  </span>;
});




// Define our Clock component
// --------------------------
  
var Clock = React.createClass({
  getDefaultProps: function () {
    return {
      date: new Date(),
      dateTransform: new ValueTransformer()
    }
  },
  getTime: function () {
    return this.props.dateTransform.getTransformedValue(this.props.date);
  },
  render: function () {
    return <span>{this.getTime()}</span>; 
  } 
});




// Render our clocks, saving a ref to each
// ---------------------------------------
  
var clocks = {
  rawDate: React.renderComponent(
    <Clock />, 
    document.getElementById('raw-date')
  ),
  clock12: React.renderComponent(
    <Clock dateTransform={timeTransform} />, 
    document.getElementById('time-12hr')
  ),
  clock24: React.renderComponent(
    <Clock dateTransform={militaryTimeTransform} />, 
    document.getElementById('time-24hr')
  ),
  mirotime: React.renderComponent(
    <Clock dateTransform={microTimeTransform} />, 
    document.getElementById('time-microtime')
  ),
  customClock: React.renderComponent(
    <Clock dateTransform={myCustomTransform} />, 
    document.getElementById('time-custom')
  )
};




// Update the clocks as time passes 
// --------------------------------
  
window.setInterval(function () {
  for(var prop in clocks) {
    if(clocks.hasOwnProperty(prop)) {
      var clock = clocks[prop];
      clock.setProps({
        date: new Date()
      });
    }
  }
}, 10);
</script>




<dl>
  <dt>Raw Date</dt>
  <dd id="raw-date"></dd>
  <dt>12 Hour Time</dt>
  <dd id="time-12hr"></dd>
  <dt>24 Hour Time</dt>
  <dd id="time-24hr"></dd>
  <dt>Microtime</dt>
  <dd id="time-microtime"></dd>
  <dt>Custom</dt>
  <dd id="time-custom"></dd>
</dl>




            
          
!
            
              dl {
  margin: 1em;
}

dt {
  color: #999;
}

dd {
  margin: 1em;
  font-family: monospace;
  font-size: 1.2em;
}
            
          
!
999px
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