| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <script> | |
| opener.postMessage({ | |
| potentially_trustworthy: location.protocol === "https:", | |
| js_blob_url: URL.createObjectURL( | |
| new Blob([`const message = "Hello World!"`], | |
| {type: 'application/javascript'})), | |
| }, "*"); | |
| </script> |