Test multiple dropdowns 2
HTML
<select id='dd1' class='dropdown'>
<option>0</option>
<option>1</option>
<option>2</option>
</select>
<select id='dd2' class='dropdown'>
<option>0</option>
<option>1</option>
<option>2</option>
</select>
JavaScript
$('.dropdown').change(function(){
var count = $(".dropdown").filter(function(){
return this.selectedIndex > 0;
}).length;
alert(count);
});