CSSNumericValue: add() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Theadd() method of theCSSNumericValue interface adds a supplied number to theCSSNumericValue.
Syntax
js
add(number)Parameters
numberEither a number or a
CSSNumericValue.
Return value
Exceptions
TypeErrorThrown if an invalid type was passed to the method.
Examples
js
let mathSum = CSS.px("23") .add(CSS.percent("4")) .add(CSS.cm("3")) .add(CSS.in("9"));// Prints "calc(23px + 4% + 3cm + 9in)"console.log(mathSum.toString());Specifications
| Specification |
|---|
| CSS Typed OM Level 1 # dom-cssnumericvalue-add |