Provides an unordered collection of information about the document.

Members Table

The following table lists the members exposed by the head object.

Attributes/Properties

Attribute	Property	Description
	ariaBusy	Sets or retrieves the busy state of this element.
	ariaChecked	Sets or retrieves the checked state of this element.
	ariaDisabled	Sets or retrieves the disabled state of this element.
	ariaExpanded	Sets or retrieves the expanded state of this element.
	ariaHaspopup	Sets or retrieves a value indicating whether this element may display a pop-up window.
	ariaHidden	Sets or retrieves the hidden state of this element.
	ariaInvalid	Sets or retrieves the invalid state of this element.
	ariaLevel	Sets or retrieves the level of this element.
	ariaMultiselect	Sets or retrieves the multiple-selection state of this element.
	ariaPosinset	Sets or retrieves the current position of an item within a set.
	ariaPressed	Sets or retrieves the pressed state of a button that can be toggled.
	ariaReadonly	Sets or retrieves the read-only state of this element.
	ariaRequired	Sets or retrieves the form-completion requirement of this element.
	ariaSecret	Sets or retrieves the secret state of this element.
	ariaSelected	Sets or retrieves the selection state of this element.
	ariaSetsize	Sets or retrieves the set size of this element.
	attributes	Retrieves a collection of attributes of the object.
	canHaveChildren	Gets a value indicating whether the object can contain child objects.
	canHaveHTML	Sets or retrieves the value indicating whether the object can contain rich HTML markup.
CLASS	className	Sets or retrieves the class of the object.
	firstChild	Retrieves a reference to the first child in the childNodes collection of the object.
ID	id	Retrieves the string identifying the object.
	innerHTML	Retrieves the HTML between the start and end tags of the object.
	isContentEditable	Gets the value that indicates whether the user can edit the contents of the object.
	isDisabled	Gets the value that indicates whether the user can interact with the object.
	isMultiLine	Retrieves the value indicating whether the content of the object contains one or more lines.
	isTextEdit	Retrieves whether a TextRange object can be created using the object.
LANG	lang	Sets or retrieves the language to use.
	lastChild	Retrieves a reference to the last child in the childNodes collection of an object.
	nextSibling	Retrieves a reference to the next child of the parent for the object.
	nodeName	Retrieves the name of a particular type of node.
	nodeType	Retrieves the type of the requested node.
	nodeValue	Sets or retrieves the value of a node.
	ownerDocument	Retrieves the document object associated with the node.
	parentElement	Retrieves the parent object in the object hierarchy.
	parentNode	Retrieves the parent object in the document hierarchy.
	parentTextEdit	Retrieves the container object in the document hierarchy that can be used to create a TextRange containing the original object.
	previousSibling	Retrieves a reference to the previous child of the parent for the object.
PROFILE	profile	Sets or retrieves one or more Uniform Resource Identifier (URI)(s) in which the object's properties and legal values for those properties are defined.
	readyState	Retrieves the current state of the object.
	role	Sets or retrieves the role for this element.
	scopeName	Gets the namespace defined for the element.
	scrollHeight	Retrieves the scrolling height of the object.
	scrollLeft	Sets or retrieves the distance between the left edge of the object and the leftmost portion of the content currently visible in the window.
	scrollTop	Sets or retrieves the distance between the top of the object and the topmost portion of the content currently visible in the window.
	scrollWidth	Retrieves the scrolling width of the object.
	sourceIndex	Retrieves the ordinal position of the object, in source order, as the object appears in the document's all collection.
	tagName	Retrieves the tag name of the object.
	tagUrn	Sets or gets the Uniform Resource Name (URN) specified in the namespace declaration.
	uniqueID	Retrieves an autogenerated, unique identifier for the object.

Behaviors

Behavior	Description
clientCaps	Provides information about features supported by Internet Explorer, as well as a way for installing browser components on demand.
download	Downloads a file and notifies a specified callback function when the download is complete.
homePage	Contains information about a user's homepage.

Collections

Collection	Description
all	Returns a reference to the collection of elements contained by the object.
attributes	Retrieves a collection of attributes of the object.
behaviorUrns	Returns a collection of Uniform Resource Name (URN) strings identifying the behaviors attached to the element.
childNodes	Retrieves a collection of HTML Elements and TextNode objects that are direct descendants of the specified object.
children	Retrieves a collection of DHTML Objects that are direct descendants of the object.

Events

Event	Description
onlayoutcomplete	Fires when the print or print preview layout process finishes filling the current LayoutRect object with content from the source document.
onreadystatechange	Fires when the state of the object has changed.

Methods

Method	Description
addBehavior	Attaches a behavior to the element.
appendChild	Appends an element as a child to the object.
applyElement	Makes the element either a child or parent of another element.
attachEvent	Binds the specified function to an event, so that the function gets called whenever the event fires on the object.
clearAttributes	Removes all attributes and values from the object.
cloneNode	Copies a reference to the object from the document hierarchy.
componentFromPoint	Returns the component located at the specified coordinates via certain events.
contains	Checks whether the given element is contained within the object.
detachEvent	Unbinds the specified function from the event, so that the function stops receiving notifications when the event fires.
dragDrop	Initiates a drag event.
fireEvent	Fires a specified event on the object.
getAdjacentText	Returns the adjacent text string.
getAttribute	Retrieves the value of the specified attribute.
getAttribute	Retrieves the value of the specified attribute.
getAttributeNode	Gets an attribute object referenced by the attribute.name property.
getElementsByTagName	Retrieves a collection of objects based on the specified element name.
hasAttribute	Determines whether an attribute with the specified name exists.
hasChildNodes	Returns a value that indicates whether the object has children.
insertAdjacentElement	Inserts an element at the specified location.
insertBefore	Inserts an element into the document hierarchy as a child node of a parent object.
mergeAttributes	Copies all read/write attributes to the specified element.
normalize	Merges adjacent TextNode objects to produce a normalized document object model.
removeAttribute	Removes the given attribute from the object.
removeAttribute	Removes the given attribute from the object.
removeAttributeNode	Removes an attribute object from the object.
removeBehavior	Detaches a behavior from the element.
removeChild	Removes a child node from the object.
removeNode	Removes the object from the document hierarchy.
replaceAdjacentText	Replaces the text adjacent to the element.
replaceChild	Replaces an existing child element with a new child element.
replaceNode	Replaces the object with another element.
setAttribute	Sets the value of the specified attribute.
setAttribute	Sets the value of the specified attribute.
setAttributeNode	Sets an attribute object node as part of the object.
swapNode	Exchanges the location of two objects in the document hierarchy.

Styles

Style attribute	Style property	Description
background-position-x	backgroundPositionX	Sets or retrieves the x-coordinate of the backgroundPosition property.
background-position-y	backgroundPositionY	Sets or retrieves the y-coordinate of the backgroundPosition property.
behavior	behavior	Sets or retrieves the location of the Dynamic HTML (DHTML) behavior.
layout-grid	layoutGrid	Sets or retrieves the composite document grid properties that specify the layout of text characters.
layout-grid-mode	layoutGridMode	Sets or retrieves whether the text layout grid uses two dimensions.
	pixelBottom	Sets or retrieves the bottom position of the object.
	pixelHeight	Sets or retrieves the height of the object.
	pixelLeft	Sets or retrieves the left position of the object.
	pixelRight	Sets or retrieves the right position of the object.
	pixelTop	Sets or retrieves the top position of the object.
	pixelWidth	Sets or retrieves the width of the object.
	posBottom	Sets or retrieves the bottom position of the object in the units specified by the bottom attribute.
	posHeight	Sets or retrieves the height of the object in the units specified by the height attribute.
	posLeft	Sets or retrieves the left position of the object in the units specified by the left attribute.
	posRight	Sets or retrieves the right position of the object in the units specified by the right attribute.
	posTop	Sets or retrieves the top position of the object in the units specified by the top attribute.
	posWidth	Sets or retrieves the width of the object in the units specified by the width attribute.
text-autospace	textAutospace	Sets or retrieves the autospacing and narrow space width adjustment of text.
text-underline-position	textUnderlinePosition	Sets or retrieves the position of the underline decoration that is set through the textDecoration property of the object.
zoom	zoom	Sets or retrieves the magnification scale of the object.

Remarks

The HEAD element provides information that does not affect the rendering of the document but could be of use to the browser. The following tags are valid in this element:

• BASE
• BASEFONT
• BGSOUND
• LINK
• META
• nextID
• SCRIPT
• STYLE
• TITLE

This element is not rendered.

This element requires a closing tag.

Example

This example uses the HEAD element to create a document title.

<HEAD>
<TITLE>A Simple Document</TITLE>
</HEAD>

Standards Information

This object is defined in HTML 3.2 .