The HTMLElement.contentEditable property is used to indicate whether or not the element is editable. This enumerated attribute can have the following values:
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.
The HTMLElement.title property represents the title of the element, the text usually displayed in a 'tool tip' popup when the mouse is over the displayed node.
The HTMLEmbedElement interface, which provides special properties (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating <embed> elements.
The HTMLFieldSetElement interface has special properties and methods (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating the layout and presentation of field-set elements.
The HTMLFormElement interface provides methods to create and modify <form> elements. document.forms - returns an array of HTMLFormElement objects referencing all forms on the page. document.forms[index] - returns an HTMLFormElement object referencing the form at the specified index. document.forms['id'] - returns an HTMLFormElement object referencing the form with the specified id. document.forms['name'] - returns an HTMLFormElement object referencing the form with the specified id.
The HTMLFrameSetElement interface provides special properties (beyond those of the regular HTMLElement interface they also inherit) for manipulating <frameset> elements.
The HTMLHRElement interface provides special properties (beyond those of the HTMLElement interface it also has available to it by inheritance) for manipulating <hr> elements.
The HTMLHtmlElement interface serves as the root node for a given HTML document. This object inherits the properties and methods described in the HTMLElement interface.
The HTMLLabelElement interface gives access to properties specific to <label> elements. It inherits methods and properties from the base HTMLElement interface.