title: Manipulating the Values of HTML Elements Using Flask
body: <p>I would like to use flask in order to manipulate the values of properties of my HTML elements.</p>
  
  <p>E.g. having the following HTML:</p>
  
  <pre><code>&lt;html&gt;
      &lt;body&gt;
          &lt;progress id="result_bar" name="result_bar" max="100" value="50"&gt; &lt;/progress&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>I would like to set the progress property "value" to 100 (i.e.100%).</p>
  
  <p>Can someone help?</p>
  
  <p>THX
  Lazloo</p>