| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="test_utils.js"></script> |
| <script> |
| function getSessionStorageKeys() { |
| let keys = []; |
| let txt = ''; |
| for (let i = 0; i < sessionStorage.length; ++i) { |
| keys.push(sessionStorage.key(i)); |
| } |
| keys.sort(); |
| keys.forEach((key) => { |
| if (txt.length) { |
| txt += ', '; |
| } |
| txt += key; |
| }); |
| return txt; |
| } |
| |
| (() => { |
| const params = new URLSearchParams(location.search); |
| const isPrerendering = params.has('prerendering'); |
| if (!isPrerendering) { |
| sessionStorage.setItem('initial', '1'); |
| return; |
| } |
| sessionStorage.setItem('prerendering', '1'); |
| window.sessionKeysInPrerenderingchange = new Promise((resolve) => { |
| document.addEventListener('prerenderingchange', () => { |
| resolve(getSessionStorageKeys()); |
| sessionStorage.setItem('activated', '1'); |
| }); |
| }); |
| })(); |
| </script> |
| </head> |
| <body></body> |
| </html> |
