title: DOJO: How to validate (required="true") selectOneMenu
body: <p>How i can validate DOJO selectOneMenu (required="true") here is some dummy code.</p>
  
  <pre><code>   &lt;select required="true" missingMessage="Ooops!  You forgot your gender!" 
  name="gender" id="gender" data-dojo-type="dijit/form/?"&gt;
          &lt;option disabled="true" value=""&gt;Select a Gender&lt;/option&gt;
          &lt;option value="1"&gt;Male&lt;/option&gt;
          &lt;option value="2"&gt;Female&lt;/option&gt;
      &lt;/select&gt;
  </code></pre>