BrowserVersionOwn?TypeAs String
Chrome94.0.4590???
Edge92.0.902ownfunctionfunction XMLHttpRequest() { [native code] }
Firefox90.0.0ownfunctionfunction XMLHttpRequest() { [native code] }
Java11.0.10???

PropertiesChromeEdgeFirefoxJava
create????
DONE 80.0.3987 92.0.902 90.0.0?
HEADERS_RECEIVED 80.0.3987 92.0.902 90.0.0?
length 80.0.3987 92.0.902 90.0.0?
LOADING 80.0.3987 92.0.902 90.0.0?
OPENED 80.0.3987 92.0.902 90.0.0?
prototype 80.0.3987 92.0.902 90.0.0?
UNSENT 80.0.3987 92.0.902 90.0.0?