| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| </head> |
| <body> |
| <iframe sandbox="allow-scripts"></iframe> |
| <script> |
| let frame = document.querySelector("iframe"); |
| let sandbox = new URL(location.href).searchParams.get("sandbox"); |
| if (sandbox) { |
| frame.sandbox = sandbox; |
| } |
| // We're the popup (i.e. a top frame). Load into the iframe the page |
| // trying to modifying the top frame and transmit the result to our |
| // opener. |
| onmessage = function(e) { |
| opener.postMessage(e.data, "*") |
| } |
| frame.src = "iframe-that-performs-top-navigation-on-popup.html"; |
| </script> |
| </body> |
| </html> |
