BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome27.0.1500???
Chrome49.0.2623ownfunctionfunction IDBFactory() { [native code] }
Chrome68.0.3440???
Edge85.0.564???
Firefox46.8.0???
IE10.0.0???
Safari4.0.0???
SamsungBrowser13.0.0???
SFive80.0.0???
TkBot0.1.0???
YandexBot3.0.0???

PropertiesBingPreviewChromeEdgeFirefoxIESafariSamsungBrowserSFiveTkBotYandexBot
length? 49.0.2623????????
prototype? 49.0.2623????????