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CSSNumericValue: toSum() method

The toSum() method of the CSSNumericValue interface converts the object's value to a CSSMathSum object to values of the specified unit.

Syntax

js

toSum(units)

Parameters

units

The units to convert to.

Return value

A CSSNumericValue.

Exceptions

TypeError

Thrown if an invalid type was passed to the method.

Examples

js

let v = CSS.px("23").add(CSS.percent("4")).add(CSS.cm("3")).add(CSS.in("9"));
v.toString(); // => "calc(23px + 4% + 3cm + 9in)"
v.toSum("px", "percent").toString(); // => "calc(1000.39px + 4%)"

Specifications

Specification
CSS Typed OM Level 1
# dom-cssnumericvalue-tosum

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
toSum 66 79 No No 53 16.4 66 66 No 47 16.4 9.0

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https://developer.mozilla.org/en-US/docs/Web/API/CSSNumericValue/toSum