CSSNumericValue: add() method
Limited availability
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The add() method of the CSSNumericValue interface adds a supplied number to the CSSNumericValue.
Syntax
js
add()
add(number1)
add(number1, number2)
add(number1, number2, /* …, */ numberN)
Parameters
number1, …,numberNOptional-
Either a number or a
CSSNumericValue.
Return value
A CSSMathSum, or a CSSUnitValue if this and every argument share the same unit.
Exceptions
TypeError-
Thrown if an invalid type was passed to the method.
Examples
Basic usage
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 |