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

PropertiesChromeEdgeFirefoxJava
canConstructInDedicatedWorker????
isTypeSupported 80.0.3987 92.0.902 90.0.0?
length 80.0.3987 92.0.902 90.0.0?
prototype 80.0.3987 92.0.902 90.0.0?