BrowserVersionOwn?TypeAs String
Chrome38.0.2125???
Chrome49.0.2623ownfunctionfunction DOMSettableTokenList() { [native code] }
Chrome57.0.2987???
Edge17.17134.0???
Firefox51.0.0???
FxiOS35.0.0???
Goanna4.8.0???
IE10.0.0ownobject[object DOMSettableTokenList]
Safari4.0.0???
SamsungBrowser14.0.0???
Stargon3.9.1???

PropertiesChromeEdgeFirefoxFxiOSGoannaIESafariSamsungBrowserStargon
length 49.0.2623????????
prototype 49.0.2623???? 10.0.0???