The HTMLAnchorElement.relList read-only property reflects the rel attribute. It is a live DOMTokenList containing the set of link types indicating the relationship between the resource represented by the <a> element and the current document.
The HTMLAreaElement.rel property reflects the rel attribute. It is a DOMString containing a space-separated list of link types indicating the relationship between the resource represented by the <a> element and the current document.
The HTMLAreaElement.relList read-only property reflects the rel attribute. It is a live DOMTokenList containing the set of link types indicating the relationship between the resource represented by the <area> element and the current document.
The HTMLAudioElement interface provides access to the properties of <audio> elements, as well as methods to manipulate them. It derives from the HTMLMediaElement interface.
The HTMLBaseElement interface contains the base URI for a document. This object inherits all of the properties and methods as described in the HTMLElement interface.
The HTMLCanvasElement.mozGetAsFille() method returns a File object representing the image contained in the canvas; this file is a memory-based file, with the specified name. If type is not specified, the image type is image/png.
The HTMLCanvasElement.toDataURL() method returns a data URI containing a representation of the image in the format specified by the type parameter (defaults to PNG). The returned image is in a resolution of 96 dpi.
The HTMLCollection interface represents a generic collection (array-like object similar to arguments) of elements (in document order) and offers methods and properties for selecting from the list.
The HTMLDataElement interface provides special properties (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating <data> elements.
The HTMLDataListElement interface provides special properties (beyond the HTMLElement object interface it also has available to it by inheritance) to manipulate <datalist> elements and their content.
The HTMLDivElement interface provides special properties (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating div elements.
The HTMLDListElement interface provides special properties (beyond those of the regular HTMLElement interface it also has available to it by inheritance) for manipulating definition list elements.
The HTMLElement.dataset property allows access, both in reading and writing mode, to all the custom data attributes (data-*) set on the element. It is a map of DOMString, one entry for each custom data attribute.