Value

CSSRule.STYLE_RULE (1)

The rule is a CSSStyleRule, the most common kind of rule: selector { prop1: val1; prop2: val2; }.

CSSRule.IMPORT_RULE (3)

The rule is a CSSImportRule and represents an @import rule.

CSSRule.MEDIA_RULE (4)

The rule is a CSSMediaRule.

CSSRule.FONT_FACE_RULE (5)

The rule is a CSSFontFaceRule

CSSRule.PAGE_RULE (6)

The rule is a CSSPageRule.

CSSRule.KEYFRAMES_RULE (7)

The rule is a CSSKeyframesRule.

CSSRule.KEYFRAME_RULE (8)

The rule is a CSSKeyframeRule.

CSSRule.MARGIN_RULE (9)

The rule is a CSSMarginRule.

CSSRule.NAMESPACE_RULE (10)

The rule is a CSSNamespaceRule.

CSSRule.COUNTER_STYLE_RULE (11)

The rule is a CSSCounterStyleRule.

CSSRule.SUPPORTS_RULE (12)

The rule is a CSSSupportsRule.

CSSRule.FONT_FEATURE_VALUES_RULE (14)

The rule is a CSSFontFeatureValuesRule.

The values CSSRule.UNKNOWN_RULE (0), CSSRule.CHARSET_RULE (2), CSSRule.DOCUMENT_RULE (13), CSSRule.VIEWPORT_RULE (14), and CSSRule.REGION_STYLE_RULE (16) cannot be obtained anymore.

Examples

const rules = document.styleSheets[0].cssRules;
console.log(rules[0].type);

Specifications

Browser compatibility