BrowserVersionOwn?TypeAs String
Chrome38.0.2125???
Chrome91.0.4472ownfunctionfunction XRJointSpace() { [native code] }
Chrome92.0.4491???
Edge17.17134.0???
Firefox51.0.0???
FxiOS35.0.0???
Goanna4.8.0???
IE10.0.0???
Safari4.0.0???
SamsungBrowser14.0.0???
Stargon3.9.1???

PropertiesChromeEdgeFirefoxFxiOSGoannaIESafariSamsungBrowserStargon
length 91.0.4472????????
prototype 91.0.4472????????