CSSStyleRule.styleMap

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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

Syntax

var stylePropertyMap = cssStyleRule.styleMap;

Value

A StylePropertyMap object.

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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
styleMap
66
79
No
No
53
No
66
66
No
47
No
9.0

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https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleRule/styleMap