BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome27.0.1500???
Edge85.0.564???
Firefox46.8.0???
IE10.0.0???
Safari4.0.0???
Safari10.1.2ownfunctionfunction WebKitNamespace() { [native code] }
Safari13.0.3???
Safari13.0.4ownfunctionfunction WebKitNamespace() { [native code] }
Safari14.2.0???
SamsungBrowser13.0.0???
SFive80.0.0???
TkBot0.1.0???
YandexBot3.0.0???

PropertiesBingPreviewChromeEdgeFirefoxIESafariSamsungBrowserSFiveTkBotYandexBot
length????? 10.0.0????
prototype????? 10.0.0????