Test case for jQuery Ticket 8293
.val(null) on select is not the same as selectedIndex -1
by jitter
HTML
<select id="one">
<option>1</option>
<option>2</option>
</select>
<select id="two">
<option />
<option>1</option>
<option>2</option>
</select>
JavaScript
$("#one, #two").val(null);