| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <input id="c" type="checkbox" aria-label="My Checkbox"> | |
| <div role="tree"> | |
| <div id="treeitem" role="treeitem" aria-checked="false">Treeitem</div> | |
| </div> | |
| <script> | |
| function go() { | |
| document.getElementById('c').indeterminate = true; | |
| document.getElementById('treeitem').setAttribute('aria-checked', 'mixed'); | |
| } | |
| </script> | |
| </body> | |
| </html> |