title: FormData() XHR2
body: <p>I am trying to use FormData(). I have tried this code in Multiple versions of Chrome and Firefox.</p>
  
  <pre><code>var fData = new FormData();
  fData.append('foo', 'bar');
  console.log('formData', fData);
  </code></pre>
  
  <p>fData, when logged, only gives me the created object with a prototype of FormData and no additional "foo" value. There are no errors, it just seems to fail silently.</p>
  
  <p>I have also tried </p>
  
  <pre><code>var fData = new FormData(formElement);
  </code></pre>