| <!doctype html> | |
| <meta charset=utf-8> | |
| <body> | |
| <script> | |
| // Step 4 | |
| let site2Window; | |
| const listener = e => { | |
| if (e.data === "Site 2 Window") { | |
| site2Window.close(); | |
| window.top.postMessage("Site 2 Frame", "*"); | |
| } | |
| }; | |
| // Step 2 | |
| window.addEventListener("message", listener); | |
| site2Window = window.open("http://{{hosts[alt][]}}:{{ports[http][0]}}/html/browsers/windows/post-message/resources/third-party-to-first-party-different-partition-same-origin-window.html", "", "noopener=false"); | |
| </script> | |
| </body> |