In my render method I have something like

```
<input type={dynamicTypeValue} value={dynamicValue} />
```

If I first render this input as a number, (e.g. `dynamicTypeValue = 'number'; dynamicValue = 5`) but then change the input to a string: (`dynamicTypeValue = 'string'; dynamicValue = '01/01/2016'`) I get a warning 
that the new value is not a valid number:

```
The specified value "01/01/2000" is not a valid number. The value must match to the following regular expression: -?(\d+|\d+\.\d+|\.\d+)([eE][-+]?\d+)?
DOMPropertyOperations.js:142 The specified value "01/01/2012" is not a valid number. The value must match to the following regular expression: -?(\d+|\d+\.\d+|\.\d+)([eE][-+]?\d+)?
```

![screen shot 2016-04-07 at 6 07 45 pm](https://cloud.githubusercontent.com/assets/1074773/14368429/a7d61baa-fceb-11e5-91f0-199ff95aa276.png)

Is this expected behavior?

var ReactDOMOption = require('ReactDOMOption');
var ReactDOMSelect = require('ReactDOMSelect');
var ReactDOMTextarea = require('ReactDOMTextarea');
var ReactInstrumentation = require('ReactInstrumentation');
var ReactMultiChild = require('ReactMultiChild');
var ReactServerRenderingTransaction = require('ReactServerRenderingTransaction');
var emptyFunction = require('emptyFunction');
var escapeTextContentForBrowser = require('escapeTextContentForBrowser');
var invariant = require('invariant');
var isEventSupported = require('isEventSupported');
var keyOf = require('keyOf');
var shallowEqual = require('shallowEqual');
var inputValueTracking = require('inputValueTracking');
var validateDOMNesting = require('validateDOMNesting');
var warning = require('warning');
var Flags = ReactDOMComponentFlags;
var deleteListener = EventPluginHub.deleteListener;
var getNode = ReactDOMComponentTree.getNodeFromInstance;
var listenTo = ReactBrowserEventEmitter.listenTo;
var registrationNameModules = EventPluginRegistry.registrationNameModules;
var CONTENT_TYPES = {'string': true, 'number': true};
var STYLE = keyOf({style: null});
var HTML = keyOf({__html: null});
var RESERVED_PROPS = {
  children: null,
  dangerouslySetInnerHTML: null,
  suppressContentEditableWarning: null,
};
var DOC_FRAGMENT_TYPE = 11;
function getDeclarationErrorAddendum(internalInstance) {