title: jQuery Multiple File Upload Plugin check wheather empty or not
body: <p>I have downloaded JQuery Multiple file uploader from this site</p>
  
  <p><a href="http://www.fyneworks.com/jquery/multiple-file-upload/" rel="nofollow">http://www.fyneworks.com/jquery/multiple-file-upload/</a></p>
  
  <p>I need to check whether the file input field  is null or not before submitting the form.</p>
  
  <pre><code>&lt;form onsubmit="return validate();"&gt;
  &lt;input type="file" name="File" class="multi" /&gt;
  &lt;input type="file" name="File" class="multi" /&gt;
  &lt;input type="submit" name="BtnSubmit" value="save" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>I tried </p>
  
  <pre><code>function validate() {
    $(".multi").each(function () {
      var multi =  $(this).val();
      if (multi) {
        return true;
      } else {
        return false;
      }
    });
  }
  </code></pre>
  
  <p>Not working because the filed is always empty. So is there any other way to achieve this ?</p>