<!DOCTYPE html>
<!--
@MAC-ALLOW:AXFocused=1
@MAC-ALLOW:AXLinkedUIElements
@MAC-DENY:AXLinkedUIElements=[]
@MAC-ALLOW:AXTitleUIElement
@WIN-DENY:description*
@WIN-ALLOW:FOCUS*
@WIN-ALLOW:haspopup*
@WIN-ALLOW:ia2_hypertext=*
@WIN-ALLOW:SELECT*
@AURALINUX-ALLOW:collapsed*
@AURALINUX-ALLOW:expand*
@AURALINUX-ALLOW:haspopup:*
@BLINK-ALLOW:haspopup*
@BLINK-ALLOW:focus*
-->
<html>
<body>
<div id="state_label">State</div>
<!-- For the first combo box, we dynamically set aria-controls. -->
<div role="combobox"
aria-autocomplete="list"
aria-expanded="true"
aria-haspopup="listbox"
aria-labelledby="state_label">
<input type="text"
aria-activedescendant="list1-state2"
autofocus>
</div>
<ul id="state_list1" role="listbox">
<li id="list1-state1" role="option">Alabama</li>
<li id="list1-state2" role="option">Alaska</li>
</ul>
<!-- For the second combo box, we dynamically set aria-controls and
aria-activedescendant and don't auto focus. -->
<div role="combobox"
aria-autocomplete="list"
aria-expanded="true"
aria-haspopup="listbox"
aria-labelledby="state_label">
<input type="text">
</div>
<ul id="state_list2" role="listbox">
<li id="list2-state1" role="option">Alabama</li>
<li id="list2-state2" role="option">Alaska</li>
</ul>
<script>
document.querySelectorAll('input')[0].setAttribute('aria-controls', 'state_list1');
document.querySelectorAll('input')[1].setAttribute('aria-controls', 'state_list2');
document.querySelectorAll('input')[1].setAttribute('aria-activedescendant', 'list2-state1');
</script>
</body>
</html>