title: Target elements in TinyMCE editor
body: <p>What is the best way to target elements (say all images of a given class) in the TinyMCE 4 editor.  I found some older solutions (i.e. <a href="https://stackoverflow.com/questions/7895082/adding-hover-event-to-elements-inside-a-tinymce-editor">Adding hover event to elements inside a tinymce editor</a>), however, they apply to TinyMCE 3.  Note that elements can be added to the editor after initial rendering, so it would need something like jQuery's <code>on()</code> functionality.</p>
  
  <p>One option might be to to do something like <code>$('#tinymce_id').contents()...</code>.</p>
  
  <p>Or maybe when configuring TinyMCE, <code>tinymce.init({'selector': '#tinymce_id','setup' : function(ed) {do something here?}});</code></p>