BrowserVersionOwn?TypeAs String
Chrome94.0.4590???
Edge92.0.902ownobject[object BarProp]
Firefox90.0.0ownobject[object BarProp]
Java11.0.10???

PropertiesChromeEdgeFirefoxJava
constructor????
visible 91.0.4472 92.0.902 90.0.0?