BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome49.0.2623ownobject[object Object]
Chrome68.0.3440ownobject[object TextTrackList]
Chrome69.0.3497???
Chrome70.0.3538ownobject[object TextTrackList]
Chrome79.0.3945???
Chrome80.0.3987ownobject[object TextTrackList]
Chrome83.0.4096???
Chrome84.0.4147ownobject[object TextTrackList]
Chrome90.0.4400???
Chrome90.0.4408ownobject[object TextTrackList]
Chrome90.0.4409???
Chrome90.0.4414ownobject[object TextTrackList]
Chrome90.0.4425???
Dalvik2.1.0???
Edge85.0.564ownobject[object TextTrackList]
Edge87.0.664???
Edge88.0.670ownobject[object TextTrackList]
Edge89.0.736???
Extension19.0.0???
fetch1.0.0???
Firefox3.5.2???
Firefox70.0.0ownobject[object TextTrackListPrototype]
Firefox78.0.0ownobject[object TextTrackList]
HeadlessChrome76.0.3803???
IE10.0.0ownobject[object TextTrackListPrototype]
MTRobot0.2.0???
Preview0.5.0???
Safari4.0.0ownobject[object TextTrackList]
Safari4.0.4???
Safari10.1.2ownobject[object TextTrackListPrototype]
Safari13.1.3???
Safari14.0.0ownobject[object TextTrackList]
Safari14.0.3???
SamsungBrowser13.0.0ownobject[object TextTrackList]
SFive80.0.0ownobject[object TextTrackList]
XC1.4.0???
YandexBot3.0.0ownobject[object TextTrackList]
zgrab0.0.0???

PropertiesBingPreviewChromeDalvikEdgeExtensionfetchFirefoxHeadlessChromeIEMTRobotPreviewSafariSamsungBrowserSFiveXCYandexBotzgrab
addEventListener? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
constructor? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
dispatchEvent? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
getTrackById? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
item??????????? 10.0.0?????
length? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
onaddtrack? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
onchange? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
onremovetrack? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???
removeEventListener? 49.0.0? 85.0.564?? 56.0.0???? 10.0.0 13.0.0 80.0.0???