BrowserVersionOwn?TypeAs String
BingPreview1.0.0ownfunctionfunction TextTrack() { [native code] }
Chrome27.0.1500???
Chrome38.0.2125ownfunctionfunction TextTrack() { [native code] }
Chrome69.0.3497???
Chrome70.0.3538ownfunctionfunction TextTrack() { [native code] }
Chrome79.0.3945???
Chrome80.0.3987ownfunctionfunction TextTrack() { [native code] }
Chrome85.0.4183???
Chrome86.0.4240ownfunctionfunction TextTrack() { [native code] }
Edge85.0.564ownfunctionfunction TextTrack() { [native code] }
Edge87.0.664???
Edge88.0.670ownfunctionfunction TextTrack() { [native code] }
Edge89.0.736???
Edge89.0.774ownfunctionfunction TextTrack() { [native code] }
Firefox46.8.0???
Firefox51.0.0ownfunctionfunction TextTrack() { [native code] }
Firefox52.0.0ownfunctionfunction TextTrack() { [native code] }
Firefox56.0.0???
Firefox70.0.0ownfunctionfunction TextTrack() { [native code] }
Firefox88.0.0???
Firefox89.0.0ownfunctionfunction TextTrack() { [native code] }
IE10.0.0ownobject[object TextTrack]
Safari4.0.0ownfunctionfunction TextTrack() { [native code] }
Safari10.1.2ownfunctionfunction TextTrack() { [native code] }
Safari13.0.3ownfunctionfunction TextTrack() { [native code] }
Safari13.0.4ownfunctionfunction TextTrack() { [native code] }
Safari14.2.0???
SamsungBrowser13.0.0ownfunctionfunction TextTrack() { [native code] }
SFive80.0.0ownfunctionfunction TextTrack() { [native code] }
TkBot0.1.0???
YandexBot3.0.0ownfunctionfunction TextTrack() { [native code] }

PropertiesBingPreviewChromeEdgeFirefoxIESafariSamsungBrowserSFiveTkBotYandexBot
DISABLED???? 10.0.0?????
ERROR???? 10.0.0?????
HIDDEN???? 10.0.0?????
length 1.0.0 38.0.0 17.0.0 51.0.0? 4.0.0 13.0.0 80.0.0? 3.0.0
LOADED???? 10.0.0?????
LOADING???? 10.0.0?????
NONE???? 10.0.0?????
prototype 1.0.0 38.0.0 17.0.0 51.0.0 10.0.0 4.0.0 13.0.0 80.0.0? 3.0.0
SHOWING???? 10.0.0?????