BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome49.0.2623???
Chrome78.0.3904ownfunctionfunction XRViewport() { [native code] }
Chrome79.0.3945???
Chrome80.0.3987ownfunctionfunction XRViewport() { [native code] }
Chrome83.0.4089???
Chrome84.0.4147ownfunctionfunction XRViewport() { [native code] }
Chrome88.0.4324???
Chrome89.0.4386ownfunctionfunction XRViewport() { [native code] }
Chrome89.0.4387???
Edge85.0.564???
Edge86.0.622ownfunctionfunction XRViewport() { [native code] }
Edge87.0.651???
Edge87.0.658ownfunctionfunction XRViewport() { [native code] }
Edge87.0.664???
Edge88.0.670ownfunctionfunction XRViewport() { [native code] }
Edge89.0.723???
Firefox68.0.0???
IE10.0.0???
Project1.3.2???
Qwantify1.0.0???
requests2.25.0???
Safari10.1.2???
SamsungBrowser13.0.0???
SFive80.0.0ownfunctionfunction XRViewport() { [native code] }
YandexBot3.0.0ownfunctionfunction XRViewport() { [native code] }

PropertiesBingPreviewChromeEdgeFirefoxIEProjectQwantifyrequestsSafariSamsungBrowserSFiveYandexBot
length? 78.0.3904 86.0.622??????? 80.0.0 3.0.0
prototype? 78.0.3904 86.0.622??????? 80.0.0 3.0.0