As described on http://facebook.github.io/react/docs/forms.html, the onChange handler of an input should fire when the checked state changes.  However, it actually fires when the radio button is clicked,

In other words, it fails to fire when a checked radio button is unchecked (by checking a different radio button), and it fires even without a state change when a checked radio button is clicked.

In short, it's missing checked transtions true->false, and it's reporting spurious transitions true->true.

'The `style` prop expects a mapping from style properties to values, ' +
    'not a string. For example, style={{marginRight: spacing + \'em\'}} when ' +
    'using JSX.%s',
     getDeclarationErrorAddendum(component)
  );
}
function enqueuePutListener(inst, registrationName, listener, transaction) {
  if (__DEV__) {
    
    
    warning(
      registrationName !== 'onScroll' || isEventSupported('scroll', true),
      'This browser doesn\'t support the `onScroll` event'
    );
  }
  var containerInfo = inst._nativeContainerInfo;
  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;
  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;
  if (!doc) {
    
    return;
  }
  listenTo(registrationName, doc);
  transaction.getReactMountReady().enqueue(putListener, {
    inst: inst,
    registrationName: registrationName,
    listener: listener,
  });
}
function putListener() {