PropertiesChromeCriOSEdgeFirefoxGooglebotIEOperaSafariSamsungBrowser
ALT_MASK??? 56.0.0?????
AT_TARGET 60.0.3112?? 56.0.0??? 11.0.0?
BUBBLING_PHASE 60.0.3112?? 56.0.0??? 11.0.0?
CAPTURING_PHASE 60.0.3112?? 56.0.0??? 11.0.0?
CONTROL_MASK??? 56.0.0?????
length 60.0.3112?? 56.0.0??? 11.0.0?
META_MASK??? 56.0.0?????
NONE 60.0.3112?? 56.0.0??? 11.0.0?
prototype 60.0.3112?? 56.0.0??? 11.0.0?
SHIFT_MASK??? 56.0.0?????