The add() method of the CSSNumericValue.
The div() method of the supplied value.
The equals() method of the value are strictly equal.
The mul() method of the the supplied value.
The sub() method of the CSSNumericValue.
The toSum() method of the js-nolint toSum(units) - units - : The units to convert to.
The type() method of the CSSNumericValue, one of angle, flex, frequency, length, resolution, percent, percentHint, or time.
The
CSSNumericValueinterface of the CSS Typed Object Model API represents operations that all numeric values can perform.MDN Reference