title: jQuery event for placeholder change?
body: <p>I was wondering if there is a jQuery event, or is there an easy way to simulate one, that is triggered when an HTML5 placeholder hides / shows.</p>
  
  <p>I tried things with a <em>keyup</em> event but I need to keep track of the field "state" to check whether or not the placeholder may have changed. Anything simpler ?</p>