| <!DOCTYPE html> | |
| <body> | |
| <script> | |
| window.addEventListener('pageshow', e => { | |
| if (parent.promiseResolver) | |
| parent.promiseResolver(document.querySelector('select').value); | |
| }); | |
| </script> | |
| <select> | |
| <option selected>o1</option> | |
| <option>o2</option> | |
| </select> | |
| </body> |