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CSSNumericValue: toSum() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

Syntax

toSum(units)

Parameters

units

The units to convert to.

Return value

A CSSMathSum.

Exceptions

TypeError

Thrown if an invalid type was passed to the method.

Examples

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

Browser compatibility

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

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