Added in API level 1

Node

interface Node

org.w3c.dom.Node

Known Direct Subclasses Attr, CharacterData, Document, DocumentFragment, DocumentType, Element, Entity, EntityReference, Notation, ProcessingInstruction Attr The Attr interface represents an attribute in an Element object. CharacterData The CharacterData interface extends Node with a set of attributes and methods for accessing character data in the DOM. Document The Document interface represents the entire HTML or XML document. DocumentFragment DocumentFragment is a "lightweight" or "minimal" Document object. DocumentType Each Document has a doctype attribute whose value is either null or a DocumentType object. Element The Element interface represents an element in an HTML or XML document. Entity This interface represents a known entity, either parsed or unparsed, in an XML document. EntityReference EntityReference nodes may be used to represent an entity reference in the tree. Notation This interface represents a notation declared in the DTD. ProcessingInstruction The ProcessingInstruction interface represents a "processing instruction", used in XML as a way to keep processor-specific information in the text of the document.

Known Indirect Subclasses CDATASection, Comment, Text CDATASection CDATA sections are used to escape blocks of text containing characters that would otherwise be regarded as markup. Comment This interface inherits from CharacterData and represents the content of a comment, i. Text The Text interface inherits from CharacterData and represents the textual content (termed character data in XML) of an Element or Attr.

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.

Summary

Constants
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.

Public methods
abstract Node!	appendChild(newChild: Node!) Adds the node newChild to the end of the list of children of this node.
abstract Node!	cloneNode(deep: Boolean) Returns a duplicate of this node, i.
abstract Short	compareDocumentPosition(other: Node!) Compares the reference node, i.
abstract NamedNodeMap!	getAttributes() A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.
abstract String!	getBaseURI() The absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI.
abstract NodeList!	getChildNodes() A NodeList that contains all children of this node.
abstract Any!	getFeature(feature: String!, version: String!) This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in .
abstract Node!	getFirstChild() The first child of this node.
abstract Node!	getLastChild() The last child of this node.
abstract String!	getLocalName() Returns the local part of the qualified name of this node.
abstract String!	getNamespaceURI() The namespace URI of this node, or null if it is unspecified (see ).
abstract Node!	getNextSibling() The node immediately following this node.
abstract String!	getNodeName() The name of this node, depending on its type; see the table above.
abstract Short	getNodeType() A code representing the type of the underlying object, as defined above.
abstract String!	getNodeValue() The value of this node, depending on its type; see the table above.
abstract Document!	getOwnerDocument() The Document object associated with this node.
abstract Node!	getParentNode() The parent of this node.
abstract String!	getPrefix() The namespace prefix of this node, or null if it is unspecified.
abstract Node!	getPreviousSibling() The node immediately preceding this node.
abstract String!	getTextContent() This attribute returns the text content of this node and its descendants.
abstract Any!	getUserData(key: String!) Retrieves the object associated to a key on a this node.
abstract Boolean	hasAttributes() Returns whether this node (if it is an element) has any attributes.
abstract Boolean	hasChildNodes() Returns whether this node has any children.
abstract Node!	insertBefore(newChild: Node!, refChild: Node!) Inserts the node newChild before the existing child node refChild.
abstract Boolean	isDefaultNamespace(namespaceURI: String!) This method checks if the specified namespaceURI is the default namespace or not.
abstract Boolean	isEqualNode(arg: Node!) Tests whether two nodes are equal.
abstract Boolean	isSameNode(other: Node!) Returns whether this node is the same node as the given one.
abstract Boolean	isSupported(feature: String!, version: String!) Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in .
abstract String!	lookupNamespaceURI(prefix: String!) Look up the namespace URI associated to the given prefix, starting from this node.
abstract String!	lookupPrefix(namespaceURI: String!) Look up the prefix associated to the given namespace URI, starting from this node.
abstract Unit	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
abstract Node!	removeChild(oldChild: Node!) Removes the child node indicated by oldChild from the list of children, and returns it.
abstract Node!	replaceChild(newChild: Node!, oldChild: Node!) Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
abstract Unit	setNodeValue(nodeValue: String!) The value of this node, depending on its type; see the table above.
abstract Unit	setPrefix(prefix: String!) The namespace prefix of this node, or null if it is unspecified.
abstract Unit	setTextContent(textContent: String!) This attribute returns the text content of this node and its descendants.
abstract Any!	setUserData(key: String!, data: Any!, handler: UserDataHandler!) Associate an object to a key on this node.

Constants

ATTRIBUTE_NODE

Added in API level 1

static val ATTRIBUTE_NODE: Short

The node is an Attr.

Value: 2

CDATA_SECTION_NODE

Added in API level 1

static val CDATA_SECTION_NODE: Short

The node is a CDATASection.

Value: 4

COMMENT_NODE

Added in API level 1

static val COMMENT_NODE: Short

The node is a Comment.

Value: 8

DOCUMENT_FRAGMENT_NODE

Added in API level 1

static val DOCUMENT_FRAGMENT_NODE: Short

The node is a DocumentFragment.

Value: 11

DOCUMENT_NODE

Added in API level 1

static val DOCUMENT_NODE: Short

The node is a Document.

Value: 9

DOCUMENT_POSITION_CONTAINED_BY

Added in API level 8

static val DOCUMENT_POSITION_CONTAINED_BY: Short

The node is contained by the reference node. A node which is contained is always following, too.

Value: 16

DOCUMENT_POSITION_CONTAINS

Added in API level 8

static val DOCUMENT_POSITION_CONTAINS: Short

The node contains the reference node. A node which contains is always preceding, too.

Value: 8

DOCUMENT_POSITION_DISCONNECTED

Added in API level 8

static val DOCUMENT_POSITION_DISCONNECTED: Short

The two nodes are disconnected. Order between disconnected nodes is always implementation-specific.

Value: 1

DOCUMENT_POSITION_FOLLOWING

Added in API level 8

static val DOCUMENT_POSITION_FOLLOWING: Short

The node follows the reference node.

Value: 4

DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC

Added in API level 8

static val DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: Short

The determination of preceding versus following is implementation-specific.

Value: 32

DOCUMENT_POSITION_PRECEDING

Added in API level 8

static val DOCUMENT_POSITION_PRECEDING: Short

The second node precedes the reference node.

Value: 2

DOCUMENT_TYPE_NODE

Added in API level 1

static val DOCUMENT_TYPE_NODE: Short

The node is a DocumentType.

Value: 10

ELEMENT_NODE

Added in API level 1

static val ELEMENT_NODE: Short

The node is an Element.

Value: 1

ENTITY_NODE

Added in API level 1

static val ENTITY_NODE: Short

The node is an Entity.

Value: 6

ENTITY_REFERENCE_NODE

Added in API level 1

static val ENTITY_REFERENCE_NODE: Short

The node is an EntityReference.

Value: 5

NOTATION_NODE

Added in API level 1

static val NOTATION_NODE: Short

The node is a Notation.

Value: 12

PROCESSING_INSTRUCTION_NODE

Added in API level 1

static val PROCESSING_INSTRUCTION_NODE: Short

The node is a ProcessingInstruction.

Value: 7

TEXT_NODE

Added in API level 1

static val TEXT_NODE: Short

The node is a Text node.

Value: 3

Public methods

appendChild

Added in API level 1

abstract fun appendChild(newChild: Node!): Node!

Adds the node newChild to the end of the list of children of this node. If the newChild is already in the tree, it is first removed.

Parameters
newChild	Node!: The node to add.If it is a DocumentFragment object, the entire contents of the document fragment are moved into the child list of this node

Return
Node!	The node added.

Exceptions

org.w3c.dom.DOMException

HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to append is one of this node's ancestors or this node itself, or if this node is of type Document and the DOM application attempts to append a second DocumentType or Element node. WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or if the previous parent of the node being inserted is readonly. NOT_SUPPORTED_ERR: if the newChild node is a child of the Document node, this exception might be raised if the DOM implementation doesn't support the removal of the DocumentType child or Element child.

cloneNode

Added in API level 1

abstract fun cloneNode(deep: Boolean): Node!

Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes. The duplicate node has no parent ( parentNode is null) and no user data. User data associated to the imported node is not carried over. However, if any UserDataHandlers has been specified along with the associated data these handlers will be called with the appropriate parameters before this method returns.
Cloning an 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 children it contains unless it is a deep clone. This includes text contained in an the Element since the text is contained in a child Text node. Cloning an Attr directly, as opposed to be cloned as part of an Element cloning operation, returns a specified attribute (specified is true). Cloning an Attr always clones its children, since they represent its value, no matter whether this is a deep clone or not. Cloning an EntityReference automatically constructs its subtree if a corresponding Entity is available, no matter whether this is a deep clone or not. Cloning any other type of node simply returns a copy of this node.
Note that cloning an immutable subtree results in a mutable copy, but the children of an EntityReference clone are readonly . In addition, clones of unspecified Attr nodes are specified. And, cloning Document, DocumentType, Entity, and Notation nodes is implementation dependent.

Parameters
deep	Boolean: If true, recursively clone the subtree under the specified node; if false, clone only the node itself (and its attributes, if it is an Element).

Return
Node!	The duplicate node.

compareDocumentPosition

Added in API level 8

abstract fun compareDocumentPosition(other: Node!): Short

Compares the reference node, i.e. the node on which this method is being called, with a node, i.e. the one passed as a parameter, with regard to their position in the document and according to the document order.

Parameters
other	Node!: The node to compare against the reference node.

Return
Short	Returns how the node is positioned relatively to the reference node.

Exceptions
org.w3c.dom.DOMException	NOT_SUPPORTED_ERR: when the compared nodes are from different DOM implementations that do not coordinate to return consistent implementation-specific results.

getAttributes

Added in API level 1

abstract fun getAttributes(): NamedNodeMap!

A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.

getBaseURI

Added in API level 8

abstract fun getBaseURI(): String!

The absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI. This value is computed as described in . However, when the Document supports the feature "HTML" [DOM Level 2 HTML] , the base URI is computed using first the value of the href attribute of the HTML BASE element if any, and the value of the documentURI attribute from the Document interface otherwise.

getChildNodes

Added in API level 1

abstract fun getChildNodes(): NodeList!

A NodeList that contains all children of this node. If there are no children, this is a NodeList containing no nodes.

getFeature

Added in API level 8

abstract fun getFeature(
    feature: String!, 
    version: String!
): Any!

This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in . The specialized object may also be obtained by using binding-specific casting methods but is not necessarily expected to, as discussed in . This method also allow the implementation to provide specialized objects which do not support the Node interface.

Parameters
feature	String!: The name of the feature requested. Note that any plus sign "+" prepended to the name of the feature will be ignored since it is not significant in the context of this method.
version	String!: This is the version number of the feature to test.

Return

Any!

Returns an object which implements the specialized APIs of the specified feature and version, if any, or null if there is no object which implements interfaces associated with that feature. If the DOMObject returned by this method implements the Node interface, it must delegate to the primary core Node and not return results inconsistent with the primary core Node such as attributes, childNodes, etc.

getFirstChild

Added in API level 1

abstract fun getFirstChild(): Node!

The first child of this node. If there is no such node, this returns null.

getLastChild

Added in API level 1

abstract fun getLastChild(): Node!

The last child of this node. If there is no such node, this returns null.

getLocalName

Added in API level 1

abstract fun getLocalName(): String!

Returns the local part of the qualified name of this node.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as Document.createElement(), this is always null.

getNamespaceURI

Added in API level 1

abstract fun getNamespaceURI(): String!

The namespace URI of this node, or null if it is unspecified (see ).
This is not a computed value that is the result of a namespace lookup based on an examination of the namespace declarations in scope. It is merely the namespace URI given at creation time.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as Document.createElement(), this is always null.

Note: Per the Namespaces in XML Specification [XML Namespaces] an attribute does not inherit its namespace from the element it is attached to. If an attribute is not explicitly given a namespace, it simply has no namespace.

getNextSibling

Added in API level 1

abstract fun getNextSibling(): Node!

The node immediately following this node. If there is no such node, this returns null.

getNodeName

Added in API level 1

abstract fun getNodeName(): String!

The name of this node, depending on its type; see the table above.

getNodeType

Added in API level 1

abstract fun getNodeType(): Short

A code representing the type of the underlying object, as defined above.

getNodeValue

Added in API level 1

abstract fun getNodeValue(): String!

The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect, including if the node is read-only.

Exceptions
org.w3c.dom.DOMException	DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

getOwnerDocument

Added in API level 1

abstract fun getOwnerDocument(): Document!

The Document object associated with this node. This is also the Document object used to create new nodes. When this node is a Document or a DocumentType which is not used with any Document yet, this is null.

getParentNode

Added in API level 1

abstract fun getParentNode(): Node!

The parent of this node. All nodes, except Attr, Document, DocumentFragment, Entity, and Notation 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.

getPrefix

Added in API level 1

abstract fun getPrefix(): String!

The namespace prefix of this node, or null if it is unspecified. When it is defined to be null, setting it has no effect, including if the node is read-only.
Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
Setting the prefix to null makes it unspecified, setting it to an empty string is implementation dependent.
Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.

getPreviousSibling

Added in API level 1

abstract fun getPreviousSibling(): Node!

The node immediately preceding this node. If there is no such node, this returns null.

getTextContent

Added in API level 8

abstract fun getTextContent(): String!

This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. On setting, any possible children this node may have are removed and, if it the new string is not empty or null, replaced by a single Text node containing the string this attribute is set to.
On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed and the returned string does not contain the white spaces in element content (see the attribute Text.isElementContentWhitespace). Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
The string returned is made of the text content of this node depending on its type, as defined below:

Node type	Content
ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE	concatenation of the textContent attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the node has no children.
TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE	nodeValue
DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE	null

Exceptions
org.w3c.dom.DOMException	DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

getUserData

Added in API level 8

abstract fun getUserData(key: String!): Any!

Retrieves the object associated to a key on a this node. The object must first have been set to this node by calling setUserData with the same key.

Parameters
key	String!: The key the object is associated to.

Return
Any!	Returns the DOMUserData associated to the given key on this node, or null if there was none.

hasAttributes

Added in API level 1

abstract fun hasAttributes(): Boolean

Returns whether this node (if it is an element) has any attributes.

Return
Boolean	Returns true if this node has any attributes, false otherwise.

hasChildNodes

Added in API level 1

abstract fun hasChildNodes(): Boolean

Returns whether this node has any children.

Return
Boolean	Returns true if this node has any children, false otherwise.

insertBefore

Added in API level 1

abstract fun insertBefore(
    newChild: Node!, 
    refChild: Node!
): Node!

Inserts the node newChild before the existing child node refChild. If refChild is null, insert newChild at the end of the list of children.
If 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.

Note: Inserting a node before itself is implementation dependent.

Parameters
newChild	Node!: The node to insert.
refChild	Node!: The reference node, i.e., the node before which the new node must be inserted.

Return
Node!	The node being inserted.

Exceptions

org.w3c.dom.DOMException

HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to insert is one of this node's ancestors or this node itself, or if this node is of type Document and the DOM application attempts to insert a second DocumentType or Element node. WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or if the parent of the node being inserted is readonly. NOT_FOUND_ERR: Raised if refChild is not a child of this node. NOT_SUPPORTED_ERR: if this node is of type Document, this exception might be raised if the DOM implementation doesn't support the insertion of a DocumentType or Element node.

isDefaultNamespace

Added in API level 8

abstract fun isDefaultNamespace(namespaceURI: String!): Boolean

This method checks if the specified namespaceURI is the default namespace or not.

Parameters
namespaceURI	String!: The namespace URI to look for.

Return
Boolean	Returns true if the specified namespaceURI is the default namespace, false otherwise.

isEqualNode

Added in API level 8

abstract fun isEqualNode(arg: Node!): Boolean

Tests whether two nodes are equal.
This method tests for equality of nodes, not sameness (i.e., whether the two nodes are references to the same object) which can be tested with Node.isSameNode(). All nodes that are the same will also be equal, though the reverse may not be true.
Two nodes are equal if and only if the following conditions are satisfied:

• The two nodes are of the same type.
• The following string attributes are equal: nodeName, localName, namespaceURI, prefix, nodeValue . This is: they are both null, or they have the same length and are character for character identical.
• The attributes NamedNodeMaps are equal. This is: they are both null, or they have the same length and for each node that exists in one map there is a node that exists in the other map and is equal, although not necessarily at the same index.
• The childNodes NodeLists are equal. This is: they are both null, or they have the same length and contain equal nodes at the same index. Note that normalization can affect equality; to avoid this, nodes should be normalized before being compared.

For two DocumentType nodes to be equal, the following conditions must also be satisfied:

• The following string attributes are equal: publicId, systemId, internalSubset.
• The entities NamedNodeMaps are equal.
• The notations NamedNodeMaps are equal.

On the other hand, the following do not affect equality: the ownerDocument, baseURI, and parentNode attributes, the specified attribute for Attr nodes, the schemaTypeInfo attribute for Attr and Element nodes, the Text.isElementContentWhitespace attribute for Text nodes, as well as any user data or event listeners registered on the nodes.

Note: As a general rule, anything not mentioned in the description above is not significant in consideration of equality checking. Note that future versions of this specification may take into account more attributes and implementations conform to this specification are expected to be updated accordingly.

Parameters
arg	Node!: The node to compare equality with.

Return
Boolean	Returns true if the nodes are equal, false otherwise.

isSameNode

Added in API level 8

abstract fun isSameNode(other: Node!): Boolean

Returns whether this node is the same node as the given one.
This method provides a way to determine whether two Node references returned by the implementation reference the same object. When two Node references are references to the same object, even if through a proxy, the references may be used completely interchangeably, such that all attributes have the same values and calling the same DOM method on either reference always has exactly the same effect.

Parameters
other	Node!: The node to test against.

Return
Boolean	Returns true if the nodes are the same, false otherwise.

isSupported

Added in API level 1

abstract fun isSupported(
    feature: String!, 
    version: String!
): Boolean

Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in .

Parameters
feature	String!: The name of the feature to test.
version	String!: This is the version number of the feature to test.

Return
Boolean	Returns true if the specified feature is supported on this node, false otherwise.

lookupNamespaceURI

Added in API level 8

abstract fun lookupNamespaceURI(prefix: String!): String!

Look up the namespace URI associated to the given prefix, starting from this node.
See for details on the algorithm used by this method.

Parameters
prefix	String!: The prefix to look for. If this parameter is null, the method will return the default namespace URI if any.

Return
String!	Returns the associated namespace URI or null if none is found.

lookupPrefix

Added in API level 8

abstract fun lookupPrefix(namespaceURI: String!): String!

Look up the prefix associated to the given namespace URI, starting from this node. The default namespace declarations are ignored by this method.
See for details on the algorithm used by this method.

Parameters
namespaceURI	String!: The namespace URI to look for.

Return
String!	Returns an associated namespace prefix if found or null if none is found. If more than one prefix are associated to the namespace prefix, the returned namespace prefix is implementation dependent.

normalize

Added in API level 1

abstract fun normalize(): Unit

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. This can be used to ensure that the DOM view of a document is the same as if it were saved and re-loaded, and is useful when operations (such as XPointer [XPointer] lookups) that depend on a particular document tree structure are to be used. If the parameter "normalize-characters" of the DOMConfiguration object attached to the Node.ownerDocument is true, this method will also fully normalize the characters of the Text nodes.

Note: In cases where the document contains CDATASections, the normalize operation alone may not be sufficient, since XPointers do not differentiate between Text nodes and CDATASection nodes.

removeChild

Added in API level 1

abstract fun removeChild(oldChild: Node!): Node!

Removes the child node indicated by oldChild from the list of children, and returns it.

Parameters
oldChild	Node!: The node being removed.

Return
Node!	The node removed.

Exceptions
org.w3c.dom.DOMException	NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NOT_FOUND_ERR: Raised if oldChild is not a child of this node. NOT_SUPPORTED_ERR: if this node is of type Document, this exception might be raised if the DOM implementation doesn't support the removal of the DocumentType child or the Element child.

replaceChild

Added in API level 1

abstract fun replaceChild(
    newChild: Node!, 
    oldChild: Node!
): Node!

Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
If newChild is a DocumentFragment object, oldChild is replaced by all of the DocumentFragment children, which are inserted in the same order. If the newChild is already in the tree, it is first removed.

Note: Replacing a node with itself is implementation dependent.

Parameters
newChild	Node!: The new node to put in the child list.
oldChild	Node!: The node being replaced in the list.

Return
Node!	The node replaced.

Exceptions

org.w3c.dom.DOMException

HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to put in is one of this node's ancestors or this node itself, or if this node is of type Document and the result of the replacement operation would add a second DocumentType or Element on the Document node. WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node. NO_MODIFICATION_ALLOWED_ERR: Raised if this node or the parent of the new node is readonly. NOT_FOUND_ERR: Raised if oldChild is not a child of this node. NOT_SUPPORTED_ERR: if this node is of type Document, this exception might be raised if the DOM implementation doesn't support the replacement of the DocumentType child or Element child.

setNodeValue

Added in API level 1

abstract fun setNodeValue(nodeValue: String!): Unit

The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect, including if the node is read-only.

Exceptions
org.w3c.dom.DOMException	NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly and if it is not defined to be null.

setPrefix

Added in API level 1

abstract fun setPrefix(prefix: String!): Unit

The namespace prefix of this node, or null if it is unspecified. When it is defined to be null, setting it has no effect, including if the node is read-only.
Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
Setting the prefix to null makes it unspecified, setting it to an empty string is implementation dependent.
Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.

Exceptions

org.w3c.dom.DOMException

INVALID_CHARACTER_ERR: Raised if the specified prefix contains an illegal character according to the XML version in use specified in the Document.xmlVersion attribute. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NAMESPACE_ERR: Raised if the specified prefix is malformed per the Namespaces in XML specification, if the namespaceURI of this node is null, if the specified prefix is "xml" and the namespaceURI of this node is different from " http://www.w3.org/XML/1998/namespace", if this node is an attribute and the specified prefix is "xmlns" and the namespaceURI of this node is different from "http://www.w3.org/2000/xmlns/", or if this node is an attribute and the qualifiedName of this node is "xmlns" [XML Namespaces] .

setTextContent

Added in API level 8

abstract fun setTextContent(textContent: String!): Unit

This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. On setting, any possible children this node may have are removed and, if it the new string is not empty or null, replaced by a single Text node containing the string this attribute is set to.
On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed and the returned string does not contain the white spaces in element content (see the attribute Text.isElementContentWhitespace). Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
The string returned is made of the text content of this node depending on its type, as defined below:

Node type	Content
ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE	concatenation of the textContent attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the node has no children.
TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE	nodeValue
DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE	null

Exceptions
org.w3c.dom.DOMException	NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

setUserData

Added in API level 8

abstract fun setUserData(
    key: String!, 
    data: Any!, 
    handler: UserDataHandler!
): Any!

Associate an object to a key on this node. The object can later be retrieved from this node by calling getUserData with the same key.

Parameters
key	String!: The key to associate the object to.
data	Any!: The object to associate to the given key, or null to remove any existing association to that key.
handler	UserDataHandler!: The handler to associate to that key, or null.

Return
Any!	Returns the DOMUserData previously associated to the given key on this node, or null if there was none.