Test case for jQuery Ticket 8128

:focus is not supported by jQuery. It just happens to work in qSA browsers.

by jitter

HTML

<script> document.querySelectorAll = null; </script>
<script src="http://code.jquery.com/jquery-1.5.js"></script>
<script>
jQuery(document).ready(function() {
    $( window.document.activeElement ).add(':focus').blur();
});
</script>
<input />