BrowserVersionOwn?TypeAs String
BingPreview1.0.0???
Chrome49.0.2623???
Edge85.0.564???
Firefox68.0.0???
Firefox78.0.0ownfunctionfunction FileSystemFileEntry() { [native code] }
IE10.0.0???
Project1.3.2???
requests2.25.0???
Safari10.1.2???
Safari12.0.0ownfunctionfunction FileSystemFileEntry() { [native code] }
Safari14.0.3???
SamsungBrowser13.0.0???
YandexBot3.0.0???

PropertiesBingPreviewChromeEdgeFirefoxIEProjectrequestsSafariSamsungBrowserYandexBot
length??? 70.0.0??? 12.0.0??
prototype??? 70.0.0??? 12.0.0??