BrowserVersionOwn?TypeAs String
Chrome85.0.4183ownfunctionfunction ServiceWorkerContainer() { [native code] }
Chrome88.0.4301???
Edge86.0.622ownfunctionfunction ServiceWorkerContainer() { [native code] }
Edge87.0.651???
Edge87.0.658ownfunctionfunction ServiceWorkerContainer() { [native code] }
Firefox68.0.0???
Firefox79.0.0ownfunctionfunction ServiceWorkerContainer() { [native code] }
IE10.0.0???
Safari10.1.2???
Safari12.0.0ownfunctionfunction ServiceWorkerContainer() { [native code] }

PropertiesChromeEdgeFirefoxIESafari
length 85.0.4183 86.0.622 79.0.0? 12.0.0
prototype 85.0.4183 86.0.622 79.0.0? 12.0.0