BrowserVersionOwn?TypeAs String
Chrome94.0.4590???
Edge92.0.902???
Firefox90.0.0???
Java11.0.10???
requests2.26.0???

PropertiesChromeEdgeFirefoxJavarequests
CONSTRAINT_ERR?????
DATABASE_ERR?????
length?????
prototype?????
QUOTA_ERR?????
SYNTAX_ERR?????
TIMEOUT_ERR?????
TOO_LARGE_ERR?????
UNKNOWN_ERR?????
VERSION_ERR?????