flags

Returns a string indicating the flags of the regular expression in question. This field is read-only. The characters in this string are sequenced and concatenated in the following order:

• "d" for hasIndices

• "g" for global

• "i" for ignoreCase

• "m" for multiline

• "s" for dotAll

• "u" for unicode

• "v" for unicodeSets

• "y" for sticky

If no flags are set, the value is the empty string.

MDN Reference