BrowserVersionOwn?TypeAs String
Chrome41.0.2224???
CriOS85.0.4183???
Edge86.0.622???
Firefox68.0.0ownfunctionfunction U2F() { [native code] }
Firefox79.0.0ownobject[object U2F]
Firefox81.0.0ownfunctionfunction U2F() { [native code] }
Firefox82.0.0ownobject[object U2F]
HeadlessChrome85.0.4183???
IE10.0.0???
KomodiaBot1.0.0???
Safari10.1.2???

PropertiesChromeCriOSEdgeFirefoxHeadlessChromeIEKomodiaBotSafari
BAD_REQUEST??? 68.0.0????
CONFIGURATION_UNSUPPORTED??? 68.0.0????
DEVICE_INELIGIBLE??? 68.0.0????
length??? 68.0.0????
OK??? 68.0.0????
OTHER_ERROR??? 68.0.0????
prototype??? 68.0.0????
register??? 79.0.0????
sign??? 79.0.0????
TIMEOUT??? 68.0.0????