BrowserVersionOwn?TypeAs String
AppleWebit537.36.0???
BingPreview1.0.0???
Chrome56.0.2924???
Edge84.0.522???
Firefox3.6.12???
FxiOS36.0.0???
IE11.0.0???
Mobile15.0.0???
render2.0.0???
Safari4.0.0???
YandexBot3.0.0???

PropertiesAppleWebitBingPreviewChromeEdgeFirefoxFxiOSIEMobilerenderSafariYandexBot
ALT_MASK???????????
AT_TARGET???????????
BUBBLING_PHASE???????????
CAPTURING_PHASE???????????
CONTROL_MASK???????????
length???????????
META_MASK???????????
NONE???????????
prototype???????????
SHIFT_MASK???????????