CSSValue: cssValueType property
Deprecated
Avoid using this feature in new projects. The DOM level 2 CSS object model was excluded from the later CSS object model (CSSOM) specification. This feature may be a candidate for removal from web standards or browsers.
Consider using the following features instead: CSS object model.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The cssValueType read-only property of the
CSSValue interface represents the type of the current computed CSS
property value.
Note: This property was part of an attempt to create a typed CSS Object Model. This attempt has been abandoned, and most browsers do not implement it.
To achieve your purpose, you can use:
- the untyped CSS Object Model, widely supported, or
- the modern CSS Typed Object Model API, less supported and considered experimental.
Value
An unsigned short representing a code defining the type of the value.
Possible values are:
| Constant | Description |
|---|---|
CSS_CUSTOM |
The value is a custom value. |
CSS_INHERIT |
The value is inherited and the cssText contains
"inherit".
|
CSS_PRIMITIVE_VALUE |
The value is a primitive value and an instance of the
CSSPrimitiveValue interface can be obtained
by using binding-specific casting methods on this instance of the
CSSValue interface.
|
CSS_VALUE_LIST |
The value is a CSSValue list and an instance of the
CSSValueList interface can be obtained by using
binding-specific casting methods on this instance of the
CSSValue interface.
|
Examples
const styleDeclaration = document.styleSheets[0].cssRules[0].style;
const cssValue = styleDeclaration.getPropertyCSSValue("color");
console.log(cssValue.cssValueType);
Specifications
This feature was originally defined in the DOM Style Level 2 specification, but has been dropped from any standardization effort since then.
It has been superseded by a modern, but incompatible, CSS Typed Object Model API that is now on the standard track.