title: How do i get the content from a formData?
body: <p>I have created a file into the formData like this:</p>
  
  <pre><code>    var fd = new FormData();
      fd.append('file', file);    
  </code></pre>
  
  <p>how do i get the content out of the formData? like the filename and the file?
  something like this?: <code>fd.filename()</code>, <code>fd.getData()</code>.
  or <code>fd.get('file')</code> to retrieve the file back?</p>