<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <html> <head> <title>Indexed Database Test</title> <script type="text/javascript;version=1.7"> function report(result) { let message = { source: "iframe" }; message.result = result; window.parent.postMessage(message.toSource(), "*"); } function runIndexedDBTest() { try { let request = indexedDB.open(window.location.pathname, 1); request.onsuccess = function(event) { report(!!(event.target.result instanceof IDBDatabase)); } } catch (e) { report(false); } } </script> </head> <body onload="runIndexedDBTest();"> </body> </html>