BrowserVersionOwn?TypeAs String
AppleWebit537.36.0???
BingPreview1.0.0???
Chrome23.0.1271???
Edge84.0.522???
Firefox3.6.12???
FxiOS36.0.0???
IE11.0.0???
Mobile15.0.0???
render2.0.0???
Safari4.0.0???
Safari11.0.0ownfunctionfunction Database() { [native code] }
Safari12.1.2???
YandexBot3.0.0???

PropertiesAppleWebitBingPreviewChromeEdgeFirefoxFxiOSIEMobilerenderSafariYandexBot
length????????? 11.0.0?
prototype????????? 11.0.0?