BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome49.0.2623???
Edge85.0.564???
Firefox56.0.0???
Firefox70.0.0ownfunctionfunction AbstractRange() { [native code] }
IE10.0.0???
Safari4.0.0???
SamsungBrowser13.0.0???
SFive80.0.0???
YandexBot3.0.0???

PropertiesBingPreviewChromeEdgeFirefoxIESafariSamsungBrowserSFiveYandexBot
length??? 70.0.0?????
prototype??? 70.0.0?????