BrowserVersionOwn?TypeAs String
BW1.1.0???
Chrome85.0.4183???
Chrome86.0.4240ownfunctionfunction BigInt64Array() { [native code] }
Edge86.0.622ownfunctionfunction BigInt64Array() { [native code] }
Firefox68.0.0ownfunctionfunction BigInt64Array() { [native code] }
IE10.0.0???
Safari10.1.2???

PropertiesBWChromeEdgeFirefoxIESafari
BYTES_PER_ELEMENT? 86.0.4240 86.0.622 68.0.0??
length? 86.0.4240 86.0.622 68.0.0??
prototype? 86.0.4240 86.0.622 68.0.0??