title: Auto-updating templates within contenteditable div
body: <p>I have a contentEditable div element, within which i am inserting an underscore template with the document.execCommand method:</p>
  
  <pre><code>var data = {a: 100, b: 200};
  
  var info = _.template('&lt;span&gt;&lt;%= data.a %&gt;,&lt;%= data.b %&gt;&lt;/span&gt;');
  
  document.execCommand('insertHTML', false, info({'data': data}));
  </code></pre>
  
  <p>This is working as expected. I am now looking for a way to have this span element update automatically when the data source changes. Is there a way to do that?</p>