BrowserVersionOwn?TypeAs String
ALAFISH89.0.4389ownobject[object WeakSet]
Chrome35.0.2309???
Chrome38.0.2125ownobject[object WeakSet]
Chrome92.0.4501???
Edge17.17134.0ownobject[object WeakSet]
Firefox51.0.0ownobject[object WeakSet]
Firefox68.0.0???
Firefox70.0.0ownobject[object WeakSet]
FxiOS33.0.0???
IE10.0.0???
Safari4.0.0ownobject[object WeakSet]
Safari9.1.1???
Safari10.1.2ownobject[object WeakSet]

PropertiesALAFISHChromeEdgeFirefoxFxiOSIESafari
add 89.0.4389 38.0.0 17.0.0 51.0.0?? 7.0.0
constructor 89.0.4389 38.0.0 17.0.0 51.0.0?? 7.0.0
delete 89.0.4389 38.0.0 17.0.0 51.0.0?? 7.0.0
has 89.0.4389 38.0.0 17.0.0 51.0.0?? 7.0.0