title: Get the whole innerHTML (parent + child)
body: <p>On a js script, I have a div which I add dynamically some childs.
  So from the beginning, I can't know how many childs my div will contains.</p>
  
  <p>When I try to get the innerHTML of my div container, I only obtains the html of the div. Not the html of the node.</p>
  
  <p>How can I get the innerHTML of the whole components, through the childs ?</p>