CSS Object Model (CSSOM)
The CSS Object Model is a set of APIs allowing the manipulation of CSS from JavaScript. It is much like the DOM, but for the CSS rather than the HTML. It allows users to read and modify CSS style dynamically.
The values of CSS are represented untyped, that is using String objects.
Reference
AnimationEventCaretPositionCSSCSSCharsetRuleCSSConditionRuleCSSCounterStyleRuleCSSFontFaceRuleCSSFontFeatureValuesMapCSSFontFeatureValuesRuleCSSGroupingRuleCSSImportRuleCSSKeyframeRuleCSSKeyframesRuleCSSMarginRuleCSSMediaRuleCSSNamespaceRuleCSSPageRuleCSSRuleCSSRuleListCSSStyleDeclarationCSSStyleSheetCSSStyleRuleCSSSupportsRuleCSSVariablesMapCSSViewportRuleFontFaceFontFaceSetFontFaceSetLoadEventGetStyleUtilsMediaListMediaQueryListMediaQueryListEventScreenStyleSheetStyleSheetListTransitionEvent
Several other interfaces are also extended by the CSSOM-related specifications: Document, Window, Element, HTMLElement, HTMLImageElement, Range, MouseEvent, and SVGElement.
CSS Typed Object Model Experimental
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
CSSImageValueExperimentalCSSKeywordValueExperimentalCSSMathInvertExperimentalCSSMathMaxExperimentalCSSMathMinExperimentalCSSMathNegateExperimentalCSSMathProductExperimentalCSSMathSumExperimentalCSSMathValueExperimentalCSSMatrixComponentExperimentalCSSNumericArrayExperimentalCSSNumericValueExperimentalCSSPerspectiveExperimentalCSSPositionValueExperimentalCSSRotateExperimentalCSSScaleExperimentalCSSSkewExperimentalCSSSkewXExperimentalCSSSkewYExperimentalCSSStyleValueExperimentalCSSTransformComponentExperimentalCSSTransformValueExperimentalCSSTranslateExperimentalCSSUnitValueExperimentalCSSUnparsedValueExperimentalCSSVariableReferenceValueExperimentalStylePropertyMapExperimentalStylePropertyMapReadOnlyExperimental
Obsolete CSSOM interfaces Deprecated
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
CSSPrimitiveValueDeprecatedCSSValueDeprecatedCSSValueListDeprecated
Tutorials
- Determining the dimensions of elements (it needs some updating as it was made in the DHTML/Ajax era)
- Managing screen orientation
Specifications
| Specification |
|---|
| CSS Object Model (CSSOM) |
| CSSOM View Module |
| CSS Typed OM Level 1 |
Browser compatibility
All these features have been added little by little over the years to the different browsers: it was a quite complex process that can't be summarized in a simple table. Please refer to the specific interfaces for its availability.