title: Wait until HTML elements gets a class then do something
body: <p>I am waiting for the document.ready event in order to do something on my page.</p>
  
  <p>Alas some other script, which I cannot change, has not worked its magic yet once my script is called. Hence, jquery selection on the class name fails as the class does not yet exist in the DOM.</p>
  
  <p>This is why I want tell my function to listen until an element gets a certain class, then do something with it.</p>
  
  <p>How do I achieve this?</p>