CSSStyleRule.styleMap

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.

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 2
# dom-cssstylerule-stylemap

Browser compatibility

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