BrowserVersionOwn?TypeAs String
AppleWebit537.36.0???
BingPreview1.0.0???
Chrome56.0.2924???
Edge84.0.522???
Firefox3.6.12???
FxiOS36.0.0???
IE11.0.0ownobject[object MSMediaKeyError]
Mobile15.0.0???
render2.0.0???
Safari4.0.0???
YandexBot3.0.0???

PropertiesAppleWebitBingPreviewChromeEdgeFirefoxFxiOSIEMobilerenderSafariYandexBot
length???????????
MS_MEDIA_KEYERR_CLIENT?????? 11.0.0????
MS_MEDIA_KEYERR_DOMAIN?????? 11.0.0????
MS_MEDIA_KEYERR_HARDWARECHANGE?????? 11.0.0????
MS_MEDIA_KEYERR_OUTPUT?????? 11.0.0????
MS_MEDIA_KEYERR_SERVICE?????? 11.0.0????
MS_MEDIA_KEYERR_UNKNOWN?????? 11.0.0????
prototype?????? 11.0.0????