CSSStyleDeclaration: parentRule property
The CSSStyleDeclaration.parentRule read-only
property returns a CSSRule that is the parent of this style
block, e.g. a CSSStyleRule representing the style for a CSS
selector.
Value
The CSS rule that contains this declaration block or null if this
CSSStyleDeclaration is not attached to a CSSRule.
Examples
The following JavaScript code gets the parent CSS style rule from a
CSSStyleDeclaration:
js
const declaration = document.styleSheets[0].rules[0].style;
const rule = declaration.parentRule;