In addition to the standard JavaScript set of functions (such as String, Array, Object, JSON etc), there are a variety of functions available from the DOM to workers. This article provides a list of those.
color is a CSS media feature whose value is the <integer> number of bits per color component (red, green, blue) of the feature. CSS colors can either be defined in hexidecimal format or in an RGB format.
color-index is a CSS media feature whose value is the <integer> number of entries in the output device's color lookup table, or zero if the device does not use such a table.
monochrome is a CSS media feature whose value is the <integer> number of bits per pixel in the output device's monochrome frame buffer, or 0 if the device is not monochrome.
scan is a CSS media feature that can be used to check what the scanning process (if any) of the output device is. The word scanning used in this context is not the same as with scanning a book or document into an image format using a scanner. Scanning here refers to the process in which an image is painted into a television (or other device) screen.
width is a CSS media feature that can be used to apply styles conditionally based on the width of the viewport. The width must be specified as a <length> value.</length>