CSSMathNegate: value property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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Note: This feature is available in Web Workers.
The value read-only property of the CSSMathNegate interface returns the CSSNumericValue that is being negated.
This is the value passed to the constructor, rectified to a CSSNumericValue (if it isn't one already).
If a plain number was passed to the constructor the value returned by this property is the passed value wrapped in a CSSUnitValue with unit: "number".
Value
A CSSNumericValue or one of its derived types.
Examples
Basic usage
The following code creates a CSSMathNegate object, then reads its value.
In this case, we passed CSS.px(10), so value is a CSSUnitValue.
Passing a composite expression such as CSS.px(10).add(CSS.percent(5)) would result in value returning a CSSMathSum.
const negated = new CSSMathNegate(CSS.px(10));
console.log(negated.value); // CSSUnitValue {value: 10, unit: "px"}
Specifications
| Specification |
|---|
| CSS Typed OM Level 1 # dom-cssmathnegate-value |