title: Show errors in JavaScript in HTML5 form
body: <p>I have a HTML5 form with required fields:</p>
  
  <pre><code>&lt;form id="my_form"&gt;
      &lt;input type="text" name="myfield1" required&gt;
      &lt;input type="text" name="myfield2" required&gt;
      &lt;input type="text" name="myfield3" required&gt;
      &lt;button type="button" id="my_button"&gt;Check&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>Also, I have the following jQuery code:</p>
  
  <pre><code>$('#my_button').on('click', function() {
      if ($('#my_form').checkValidity() == false) {
         //show errors
      }
  });
  </code></pre>
  
  <p>I would like to force show HTML5 errors in <code>//show errors</code> line.</p>