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CSSCounterStyleRule: negative property

Baseline 2023
Newly available

Since ⁨September 2023⁩, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The negative property of the CSSCounterStyleRule interface gets and sets the value of the negative descriptor. If the descriptor does not have a value set, this attribute returns an empty string.

Value

A string.

Examples

The following example shows a @counter-style rule. In JavaScript, myRules[0] is this @counter-style rule, returning negative gives us the value "-".

@counter-style neg {
  system: numeric;
  symbols: "0" "1" "2" "3" "4" "5" "6" "7" "8" "9";
  negative: "-";
}
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].negative); // "-"

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
negative 91 91 33 77 17 91 33 64 17 16.0 91 17

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https://developer.mozilla.org/en-US/docs/Web/API/CSSCounterStyleRule/negative