title: Mobile Safari is ignoring my autofocus jQuery event?
body: <p>I am trying to on page load have the first form field to be automatically selected/in focus by using the focus() method in jQuery. 
  This works fine on the deskop - however this doesn't appear to work on iOS in the Safari browser - can anyone suggest why not?</p>
  
  <pre><code>    var el = $('#txtNewUsername').get(0);
      var elemLen = el.value.length;
  
      el.selectionStart = elemLen;
      el.selectionEnd = elemLen;
      el.focus();
  </code></pre>