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CSSPrimitiveValue: primitiveType property

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.

The primitiveType read-only property of the CSSPrimitiveValue interface represents the type of a CSS 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 the type of the value. Possible values are:

Constant	Description
`CSS_ATTR`	The value is an `attr()` function. The value can be obtained by using the `getStringValue()` method.
`CSS_CM`	The value is a `<length>` in centimeters. The value can be obtained by using the `getFloatValue()` method.
`CSS_COUNTER`	The value is a counter or counters function. The value can be obtained by using the `getCounterValue()` method.
`CSS_DEG`	The value is an `<angle>` in degrees. The value can be obtained by using the `getFloatValue()` method.
`CSS_DIMENSION`	The value is a `<number>` with an unknown dimension. The value can be obtained by using the `getFloatValue()` method.
`CSS_EMS`	The value is a `<length>` in em units. The value can be obtained by using the `getFloatValue()` method.
`CSS_EXS`	The value is a `<length>` in ex units. The value can be obtained by using the `getFloatValue()` method.
`CSS_GRAD`	The value is an `<angle>` in grads. The value can be obtained by using the `getFloatValue()` method.
`CSS_HZ`	The value is a `<frequency>` in Hertz. The value can be obtained by using the getFloatValue method.
`CSS_IDENT`	The value is an identifier. The value can be obtained by using the `getStringValue()` method.
`CSS_IN`	The value is a `<length>` in inches. The value can be obtained by using the `getFloatValue()` method.
`CSS_KHZ`	The value is a `<frequency>` in Kilohertz. The value can be obtained by using the `getFloatValue()` method.
`CSS_MM`	The value is a `<length>` in millimeters. The value can be obtained by using the `getFloatValue()` method.
`CSS_MS`	The value is a `<time>` in milliseconds. The value can be obtained by using the `getFloatValue()` method.
`CSS_NUMBER`	The value is a simple `<number>`. The value can be obtained by using the `getFloatValue()` method.
`CSS_PC`	The value is a `<length>` in picas. The value can be obtained by using the `getFloatValue()` method.
`CSS_PERCENTAGE`	The value is a `<percentage>`. The value can be obtained by using the `getFloatValue()` method.
`CSS_PT`	The value is a `<length>` in points. The value can be obtained by using the `getFloatValue()` method.
`CSS_PX`	The value is a `<length>` in pixels. The value can be obtained by using the `getFloatValue()` method.
`CSS_RAD`	The value is an `<angle>` in radians. The value can be obtained by using the `getFloatValue()` method.
`CSS_RECT`	The value is a `rect()` function. The value can be obtained by using the `getRectValue()` method.
`CSS_RGBCOLOR`	The value is an `<color>`. The value can be obtained by using the `getRGBColorValue()` method.
`CSS_S`	The value is a `<time>` in seconds. The value can be obtained by using the `getFloatValue()` method.
`CSS_STRING`	The value is a `<string>`. The value can be obtained by using the `getStringValue()` method.
`CSS_UNKNOWN`	The value is not a recognized CSS2 value. The value can only be obtained by using the `cssText` attribute.
`CSS_URI`	The value is a `<url>`. The value can be obtained by using the `getStringValue()` method.

Examples

const cs = window.getComputedStyle(document.body);
const cssValue = cs.getPropertyCSSValue("color");
console.log(cssValue.primitiveType);

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.

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`primitiveType`	No	No	20–62	No	7	No	20–62	No	7	No	No	7

CSSPrimitiveValue: primitiveType property

Value

Examples

Specifications

Browser compatibility

See also