title: event.pageX/Y not working on touchmove
body: <p>Today I had the following thing going on: I had an existing <code>mousemove</code> event and added <code>touchmove</code> later on, like this:</p>
  
  <pre><code>$(window).on "mousemove touchmove", (e) -&gt;
    pos_x = e.pageX
    pos_y = e.pageY
  </code></pre>
  
  <p>Unfortunately both variables were <code>undefined</code> on mobile devices.</p>