title: Html5 content edit also change with source code
body: <p>I want to create my small html editor with using html5 </p>
  
  <p><code>&lt;section contenteditable="true"&gt;
   Edit here
  &lt;/section&gt;</code></p>
  
  <p>so, when i use it's make specified region editable but how i change also its source code 
  with their front code, is this possible with any simple way or javascript.</p>