const unsigned short ABORT_ERR = 20; 

readonly attribute unsigned short code; 

const unsigned short ENCODING_ERR = 26; 

const unsigned short NO_MODIFICATION_ALLOWED_ERR = 7; 

const unsigned short NOT_FOUND_ERR = 8; 

const unsigned short NOT_READABLE_ERR = 24; 

const unsigned short SECURITY_ERR = 18;