CSSNumericValue: add() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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The add() method of the
CSSNumericValue interface adds a supplied number to the
CSSNumericValue.
Syntax
js
add(number)
Parameters
number-
Either a number or a
CSSNumericValue.
Return value
Exceptions
TypeError-
Thrown 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 |