title: How to show hidden div after hitting submit button in form?
body: <p>I have simple HTML form with submit button. After hitting this button I would like to the see <code>div#my_id</code> which is not visible before.</p>
  
  <pre><code>&lt;input type="submit" name="xxx" value="yyy" onclick="document.getElementById('my_id').style.display = 'block' ;"&gt;
  
  &lt;div id="my_id" style="display: none"&gt; My text &lt;/div&gt;
  </code></pre>
  
  <p>How can I make it work?</p>