CSSStyleRule: styleMap property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The styleMap read-only property of the CSSStyleRule interface returns a StylePropertyMap object which provides access to the rule's property-value pairs.

Value

A StylePropertyMap object.

Example

The following example shows styleMap being used to modify a style using the StylePropertyMap.set() method.

js
const stylesheet = document.styleSheets[0];

Object.values(stylesheet.cssRules).forEach((block) => {
  if (block.selectorText === "button") {
    block.styleMap.set("--mainColor", "black");
  }
});

Specifications

Specification
CSS Typed OM Level 1
# dom-cssstylerule-stylemap

Browser compatibility

BCD tables only load in the browser