BrowserVersionOwn?TypeAs String
AppleWebit537.36.0???
BingPreview1.0.0???
Chrome41.0.2226???
CriOS107.0.0???
Edge84.0.522???
Firefox68.0.0???
FxiOS36.0.0???
Googlebot2.1.0???
IE11.0.0???
ManicTime5.2.4???
Mobile15.0.0???
render2.0.0???
Safari4.0.0ownfunctionfunction BudgetService() { [native code] }
Safari8.0.0???
Safari537.36.0ownfunctionfunction BudgetService() { [native code] }
SamsungBrowser17.0.0???
YandexBot3.0.0???

PropertiesAppleWebitBingPreviewChromeCriOSEdgeFirefoxFxiOSGooglebotIEManicTimeMobilerenderSafariSamsungBrowserYandexBot
length???????????? 4.0.0??
prototype???????????? 4.0.0??