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

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

desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
toSum