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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.
newChild
to the end of the list of children of
this node.
NamedNodeMap
containing the attributes of this node (if it
is an Element
) or null
otherwise.
NodeList
that contains all children of this node.
Document
object associated with this node.
newChild
before the existing child node
refChild
.
oldChild
from the list
of children, and returns it.
oldChild
with newChild
in the list of children, and returns the oldChild
node.
public static final short ELEMENT_NODEATTRIBUTE_NODE
public static final short ATTRIBUTE_NODETEXT_NODE
public static final short TEXT_NODECDATA_SECTION_NODE
public static final short CDATA_SECTION_NODEENTITY_REFERENCE_NODE
public static final short ENTITY_REFERENCE_NODEENTITY_NODE
public static final short ENTITY_NODEPROCESSING_INSTRUCTION_NODE
public static final short PROCESSING_INSTRUCTION_NODECOMMENT_NODE
public static final short COMMENT_NODEDOCUMENT_NODE
public static final short DOCUMENT_NODEDOCUMENT_TYPE_NODE
public static final short DOCUMENT_TYPE_NODEDOCUMENT_FRAGMENT_NODE
public static final short DOCUMENT_FRAGMENT_NODENOTATION_NODE
public static final short NOTATION_NODE
public abstract String getNodeName()
public abstract String getNodeValue() throws DOMException
DOMString
variable on the implementation
platform.
public abstract void setNodeValue(String nodeValue) throws DOMExceptiongetNodeType
public abstract short getNodeType()
public abstract Node getParentNode()
Document
,
DocumentFragment
, and Attr
may have a parent.
However, if a node has just been created and not yet added to the tree,
or if it has been removed from the tree, this is null
.
public abstract NodeList getChildNodes()
NodeList
that contains all children of this node. If there
are no children, this is a NodeList
containing no nodes.
The content of the returned NodeList
is "live" in the sense
that, for instance, changes to the children of the node object that
it was created from are immediately reflected in the nodes returned by
the NodeList
accessors; it is not a static snapshot of the
content of the node. This is true for every NodeList
,
including the ones returned by the getElementsByTagName
method.
public abstract Node getFirstChild()
null
.
public abstract Node getLastChild()
null
.
public abstract Node getPreviousSibling()
null
.
public abstract Node getNextSibling()
null
.
public abstract NamedNodeMap getAttributes()
NamedNodeMap
containing the attributes of this node (if it
is an Element
) or null
otherwise.
public abstract Document getOwnerDocument()
Document
object associated with this node. This is also
the Document
object used to create new nodes. When this
node is a Document
this is null
.
public abstract Node insertBefore(Node newChild, Node refChild) throws DOMException
newChild
before the existing child node
refChild
. If refChild
is null
,
insert newChild
at the end of the list of children.
newChild
is a DocumentFragment
object,
all of its children are inserted, in the same order, before
refChild
. If the newChild
is already in the
tree, it is first removed.
newChild
node, or if
the node to insert is one of this node's ancestors.
newChild
was created
from a different document than the one that created this node.
refChild
is not a child of
this node.
public abstract Node replaceChild(Node newChild, Node oldChild) throws DOMException
oldChild
with newChild
in the list of children, and returns the oldChild
node. If
the newChild
is already in the tree, it is first removed.
newChild
node, or it
the node to put in is one of this node's ancestors.
newChild
was created
from a different document than the one that created this node.
oldChild
is not a child of
this node.
public abstract Node removeChild(Node oldChild) throws DOMException
oldChild
from the list
of children, and returns it.
oldChild
is not a child of
this node.
public abstract Node appendChild(Node newChild) throws DOMException
newChild
to the end of the list of children of
this node. If the newChild
is already in the tree, it is
first removed.
DocumentFragment
object, the entire contents of the document fragment are moved into
the child list of this node
newChild
node, or if
the node to append is one of this node's ancestors.
newChild
was created
from a different document than the one that created this node.
public abstract boolean hasChildNodes()
true
if the node has any children,
false
if the node has no children.
public abstract Node cloneNode(boolean deep)
parentNode
returns null
.).
Element
copies all attributes and their
values, including those generated by the XML processor to represent
defaulted attributes, but this method does not copy any text it contains
unless it is a deep clone, since the text is contained in a child
Text
node. Cloning any other type of node simply returns a
copy of this node.
true
, recursively clone the subtree under the
specified node; if false
, clone only the node itself (and
its attributes, if it is an Element
).
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