<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script> var windowUrl = decodeURIComponent(window.location.search.substring(3)) var opened = window.open(windowUrl, '', 'show=no') window.addEventListener('message', function (event) { try { opened.close() } finally { console.log(event.data) } }) </script> </head> <body> </body> </html>