org.w3c.dom
Interface Node

All Known Subinterfaces:

Attr , CDATASection , CharacterData , Comment , Document , DocumentFragment , DocumentType , Element , Entity , EntityReference , HTMLAnchorElement , HTMLAppletElement , HTMLAreaElement , HTMLBaseElement , HTMLBaseFontElement , HTMLBodyElement , HTMLBRElement , HTMLButtonElement , HTMLDirectoryElement , HTMLDivElement , HTMLDListElement , HTMLDocument , HTMLElement , HTMLFieldSetElement , HTMLFontElement , HTMLFormElement , HTMLFrameElement , HTMLFrameSetElement , HTMLHeadElement , HTMLHeadingElement , HTMLHRElement , HTMLHtmlElement , HTMLIFrameElement , HTMLImageElement , HTMLInputElement , HTMLIsIndexElement , HTMLLabelElement , HTMLLegendElement , HTMLLIElement , HTMLLinkElement , HTMLMapElement , HTMLMenuElement , HTMLMetaElement , HTMLModElement , HTMLObjectElement , HTMLOListElement , HTMLOptGroupElement , HTMLOptionElement , HTMLParagraphElement , HTMLParamElement , HTMLPreElement , HTMLQuoteElement , HTMLScriptElement , HTMLSelectElement , HTMLStyleElement , HTMLTableCaptionElement , HTMLTableCellElement , HTMLTableColElement , HTMLTableElement , HTMLTableRowElement , HTMLTableSectionElement , HTMLTextAreaElement , HTMLTitleElement , HTMLUListElement , Notation , ProcessingInstruction , Text

All Known Implementing Classes:

IIOMetadataNode

public interface Node

The Node interface is the primary datatype for the entire Document Object Model. It represents a single node in the document tree. While all objects implementing the Node interface expose methods for dealing with children, not all objects implementing the Node interface may have children. For example, Text nodes may not have children, and adding children to such nodes results in a DOMException being raised.

The attributes nodeName, nodeValue and attributes are included as a mechanism to get at node information without casting down to the specific derived interface. In cases where there is no obvious mapping of these attributes for a specific nodeType (e.g., nodeValue for an Element or attributes for a Comment ), this returns null. Note that the specialized interfaces may contain additional and more convenient mechanisms to get and set the relevant information.

The values of nodeName, nodeValue, and attributes vary according to the node type as follows:

Interface	nodeName	nodeValue	attributes
Attr	same as Attr.name	same as Attr.value	null
CDATASection	"#cdata-section"	same as CharacterData.data, the content of the CDATA Section	null
Comment	"#comment"	same as CharacterData.data, the content of the comment	null
Document	"#document"	null	null
DocumentFragment	"#document-fragment"	null	null
DocumentType	same as DocumentType.name	null	null
Element	same as Element.tagName	null	NamedNodeMap
Entity	entity name	null	null
EntityReference	name of entity referenced	null	null
Notation	notation name	null	null
ProcessingInstruction	same as ProcessingInstruction.target	same as ProcessingInstruction.data	null
Text	"#text"	same as CharacterData.data, the content of the text node	null

See also the Document Object Model (DOM) Level 3 Core Specification.

Field Summary

static short	ATTRIBUTE_NODE The node is an Attr.
static short	CDATA_SECTION_NODE The node is a CDATASection.
static short	COMMENT_NODE The node is a Comment.
static short	DOCUMENT_FRAGMENT_NODE The node is a DocumentFragment.
static short	DOCUMENT_NODE The node is a Document.
static short	DOCUMENT_POSITION_CONTAINED_BY The node is contained by the reference node.
static short	DOCUMENT_POSITION_CONTAINS The node contains the reference node.
static short	DOCUMENT_POSITION_DISCONNECTED The two nodes are disconnected.
static short	DOCUMENT_POSITION_FOLLOWING The node follows the reference node.
static short	DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC The determination of preceding versus following is implementation-specific.
static short	DOCUMENT_POSITION_PRECEDING The second node precedes the reference node.
static short	DOCUMENT_TYPE_NODE The node is a DocumentType.
static short	ELEMENT_NODE The node is an Element.
static short	ENTITY_NODE The node is an Entity.
static short	ENTITY_REFERENCE_NODE The node is an EntityReference.
static short	NOTATION_NODE The node is a Notation.
static short	PROCESSING_INSTRUCTION_NODE The node is a ProcessingInstruction.
static short	TEXT_NODE The node is a Text node.

Method Summary

Node	appendChild (Node newChild) Adds the node newChild to the end of the list of children of this node.
Node	cloneNode (boolean deep) Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes.
short	compareDocumentPosition (Node other) Compares the reference node, i.e.
NamedNodeMap	getAttributes () A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.
String	getBaseURI () The absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI.
NodeList	getChildNodes () A NodeList that contains all children of this node.
Object	getFeature (String feature, String version) This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in .
Node	getFirstChild () The first child of this node.
Node	getLastChild () The last child of this node.
String	getLocalName () Returns the local part of the qualified name of this node.
String	getNamespaceURI () The namespace URI of this node, or null if it is unspecified (see ).
Node	getNextSibling () The node immediately following this node.
String	getNodeName () The name of this node, depending on its type; see the table above.
short	getNodeType () A code representing the type of the underlying object, as defined above.
String	getNodeValue () The value of this node, depending on its type; see the table above.
Document	getOwnerDocument () The Document object associated with this node.
Node	getParentNode () The parent of this node.
String	getPrefix () The namespace prefix of this node, or null if it is unspecified.
Node	getPreviousSibling () The node immediately preceding this node.
String	getTextContent () This attribute returns the text content of this node and its descendants.
Object	getUserData (String key) Retrieves the object associated to a key on a this node.
boolean	hasAttributes () Returns whether this node (if it is an element) has any attributes.
boolean	hasChildNodes () Returns whether this node has any children.
Node	insertBefore (Node newChild, Node refChild) Inserts the node newChild before the existing child node refChild.
boolean	isDefaultNamespace (String namespaceURI) This method checks if the specified namespaceURI is the default namespace or not.
boolean	isEqualNode (Node arg) Tests whether two nodes are equal.
boolean	isSameNode (Node other) Returns whether this node is the same node as the given one.
boolean	isSupported (String feature, String version) Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in .
String	lookupNamespaceURI (String prefix) Look up the namespace URI associated to the given prefix, starting from this node.
String	lookupPrefix (String namespaceURI) Look up the prefix associated to the given namespace URI, starting from this node.
void	normalize () Puts all Text nodes in the full depth of the sub-tree underneath this Node, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes.
Node	removeChild (Node oldChild) Removes the child node indicated by oldChild from the list of children, and returns it.
Node	replaceChild (Node newChild, Node oldChild) Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
void	setNodeValue (String nodeValue) The value of this node, depending on its type; see the table above.
void	setPrefix (String prefix) The namespace prefix of this node, or null if it is unspecified.
void	setTextContent (String