BrowserVersionOwn?TypeAs String
Chrome86.0.4240ownobject[object NativeIOManager]
Edge86.0.622???
Firefox68.0.0???
IE10.0.0???
Safari10.1.2???

PropertiesChromeEdgeFirefoxIESafari
delete 86.0.4240????
getAll 86.0.4240????
open 86.0.4240????
rename 86.0.4240????