window-postmessage-open-close.html (223B)
1 <!DOCTYPE html> 2 <!-- Used when testing access of a closed/detached window's properties --> 3 <html> 4 <body onpagehide="opener.postMessage('closed', '*');"> 5 <script> 6 opener.postMessage("opened", "*"); 7 </script> 8 </body> 9 </html>