CSSCounterStyleRule: suffix property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2023.

The suffix property of the CSSCounterStyleRule interface gets and sets the value of the suffix 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 suffix gives us the value ": ".

css
@counter-style box-corner {
  system: fixed;
  symbols: ◰ ◳ ◲ ◱;
  suffix: ": ";
  negative: "-";
}
js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].suffix); // ": "

Specifications

Specification
CSS Counter Styles Level 3
# dom-csscounterstylerule-suffix

Browser compatibility