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CSS

The CSS interface holds useful CSS-related methods. No object with this interface are implemented: it contains only static methods and therefore is a utilitarian interface.

Properties

The CSS interface is a utility interface and no object of this type can be created: only static properties are defined on it.

Static properties

CSS.paintWorklet: Provides access to the Worklet responsible for all the classes related to painting.

Methods

The CSS interface is a utility interface and no object of this type can be created: only static methods are defined on it.

Static methods

No inherited static methods.

CSS.supports(): Returns a Boolean indicating if the pair property-value, or the condition, given in parameter is supported.

CSS.escape(): Can be used to escape a string mostly for use as part of a CSS selector.

Specifications

Specification	Status	Comment
CSS Painting API Level 1 The definition of 'paintWorklet' in that specification.	Draft	Adds the `paintWorklet` static property.
CSS Object Model (CSSOM) The definition of 'CSS' in that specification.	Working Draft	Adds the `escape()` static method.
CSS Conditional Rules Module Level 3 The definition of 'CSS' in that specification.	Candidate Recommendation	Initial definition

Browser compatibility

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	28.0	(Yes)	22.0 (22.0) [1]	6.0	12.1	No support
`escape()`	46.0	?	31.0 (31.0)	No support	No support	No support

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	22.0 (22.0)^[1]	No support	12.1	No support
`escape()`	No support	?	31.0 (31.0)	No support	No support	No support

[1] Was available behind the layout.css.supports-rule.enabled preference since Gecko 20.