The getStringValue() method of the CSSPrimitiveValue interface is used to get a string value. If this CSS value doesn't contain a string value, a DOMException is raised.
The setFloatValue() method of the CSSPrimitiveValue interface is used to set a float value. If the property attached to this value can't accept the specified unit or the float value, the value will be unchanged and a DOMException will be raised.
The setStringValue() method of the CSSPrimitiveValue interface is used to set a string value. If the property attached to this value can't accept the specified unit or the string value, the value will be unchanged and a DOMException will be raised.
A CSSRuleList is an (indirect-modify only) array-like object containing an ordered collection of CSSRule objects.
The CSSStyleSheet.deleteRule() method removes a style rule from the current style sheet object.
The cssText property of the CSSValue interface represents the current computed CSS property value.
The CSSValueList interface derives from the CSSValue interface and provides the abstraction of an ordered collection of CSS values.
createProcessingInstruction() creates a new processing instruction node, and returns it.
When an HTML document has been switched to designMode, the document object exposes the execCommand method which allows one to run commands to manipulate the contents of the editable region. Most commands affect the document's selection (bold, italics, etc.), while others insert new elements (adding a link) or affect an entire line (indenting). When using contentEditable, calling execCommand() will affect the currently active editable element.
false if the active element in the document has no focus; true if the active element in the document has focus.
The Document.styleSheets read-only property returns a StyleSheetList of CSSStyleSheet objects for stylesheets explicitly linked into or embedded in a document.
getAttribute() returns the value of a specified attribute on the element. If the given attribute does not exist, the value returned will either be null or "" (the empty string); see Notes for details.
The Element.innerHTML property sets or gets the HTML syntax describing the element's descendants.
The Element.localName read-only property returns the local part of the qualified name of an element.
The Element.namespaceURI read-only property returns the namespace URI of the element, or null if the element is not in a namespace.
The Element.prefix read-only property returns the namespace prefix of the specified element, or null if no prefix is specified.
The GamepadEvent interface of the Gamepad API contains references to gamepads connected to the system, which is what the gamepad events Window.gamepadconnected and Window.gamepaddisconnected are fired in response to.
The HTMLProgressElement interface provides special properties and methods (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating the layout and presentation of <progress> elements.