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

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

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
styleMap

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.