The currency prefix and suffix (e.g., ["$", ""]).
The decimal point (e.g., ".")
The array of group sizes (e.g., [3]), cycled as needed.
Optional minusOptional; the minus sign (defaults to "−").
Optional nanOptional; the not-a-number value (defaults "NaN").
Optional numeralsAn optional array of ten strings to replace the numerals 0-9.
Optional percentAn optional symbol to replace the percent suffix; the percent suffix (defaults to "%").
The group separator (e.g., ","). Note that the thousands property is a misnomer, as the grouping definition allows groups other than thousands.
Specification of locale to use when creating a new FormatLocaleObject