This feature is not Baseline because it does not work in some of the most widely-used browsers.
The length read-only property of the CSSUnparsedValue interface returns the number of items in the object.
An integer.
In this example we employ the CSSUnparsedValue() constructor, then query the length:
const values = new CSSUnparsedValue(["1em", "#445566", "-45px"]); console.log(values.length); // 3
| Specification |
|---|
| CSS Typed OM Level 1> # dom-cssunparsedvalue-length> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
length |
66 | 79 | No | 53 | 16.4 | 66 | No | 47 | 16.4 | 9.0 | 66 | 16.4 |
CSSUnparsedValue()CSSUnparsedValue.entriesCSSUnparsedValue.forEachCSSUnparsedValue.keysCSSUnparsedValue.values
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https://developer.mozilla.org/en-US/docs/Web/API/CSSUnparsedValue/length