CSSCounterStyleRule.pad

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

A CSSOMString

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

@counter-style box-corner {
  system: numeric;
  symbols: "0" "1" "2" "3" "4" "5";
  pad: 2 "0";
}

let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].pad); // "0"