BrowserVersionOwn?TypeAs String
Chrome81.0.4044???
Edge86.0.622???
Firefox68.0.0???
Firefox79.0.0ownobject[object Object]
HeadlessChrome81.0.4044???
IE10.0.0???
Safari10.1.2???

PropertiesChromeEdgeFirefoxHeadlessChromeIESafari
security?? 79.0.0???