title: Change file.name of file captured in <input type="file" />
body: <p>How do I change the file.name that was captured in input tag:</p>
  
  <pre><code>&lt;input type="file" /&gt;
  </code></pre>
  
  <p>Cause I want to replace if for example the file name has spaces I want to replace it with underscore. Thanks!</p>