Draft
This page is not complete.
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The CSSMathValue
interface of the CSS Typed Object Model API a base class for classes representing complex numeric values.
Interfaces based on CSSMathValue
Below is a list of interfaces based on the CSSMathValue interface.
Properties
CSSMathValue.operator
- Indicates the operator that the current subtype represents.
Event handlers
No
Methods
None.
Examples
We create an element with a width
determined using a calc()
function, then console.log()
the operator
.
<div>has width</div>
We assign a width
with a calculation
div { width: calc(30% - 20px); }
We add the JavaScript
const styleMap = document.querySelector('div').computedStyleMap(); console.log( styleMap.get('width') ); // CSSMathSum {values: CSSNumericArray, operator: "sum"} console.log( styleMap.get('width').operator ); // 'sum' console.log( styleMap.get('width').values[1].value ); // -20
The CSSMathValue.operator
returns 'sum
' because styleMap.get('width').values[1].value );
is -20
: adding a negative number.
Specifications
Specification | Status | Comment |
---|---|---|
CSS Typed OM Level 1 The definition of 'CSSMathValue' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CSSMathValue | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
operator | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.