BrowserVersionOwn?TypeAs String
Chrome41.0.2224???
Chrome86.0.4240ownfunctionfunction TextTrack() { [native code] }
CriOS85.0.4183???
Edge86.0.622ownfunctionfunction TextTrack() { [native code] }
Firefox68.0.0???
Firefox79.0.0ownfunctionfunction TextTrack() { [native code] }
HeadlessChrome85.0.4183???
IE10.0.0ownobject[object TextTrack]
KomodiaBot1.0.0???
Safari10.1.2ownfunctionfunction TextTrack() { [native code] }

PropertiesChromeCriOSEdgeFirefoxHeadlessChromeIEKomodiaBotSafari
DISABLED????? 10.0.0??
ERROR????? 10.0.0??
HIDDEN????? 10.0.0??
length 86.0.4240? 86.0.622 79.0.0??? 10.0.0
LOADED????? 10.0.0??
LOADING????? 10.0.0??
NONE????? 10.0.0??
prototype 86.0.4240? 86.0.622 79.0.0? 10.0.0? 10.0.0
SHOWING????? 10.0.0??