| <!DOCTYPE html> |
| <html> |
| <body> |
| <input role="combobox" type="search" aria-expanded="true" aria-haspopup="true" |
| aria-autocomplete="list" aria-activedescendant="option2" aria-owns="list"> |
| <ul id="list" role="listbox"> |
| <li id="option1" role="option">Apple</li> |
| <li id="option2" role="option">Orange</li> |
| <li id="option3" role="option">Banana</li> |
| </ul> |
| <script> |
| document.querySelector('input').focus(); |
| function go() { |
| var combo_box = document.querySelector('input'); |
| combo_box.setAttribute('aria-activedescendant', 'option3'); |
| } |
| </script> |
| </body> |
| </html> |
