Node
interface Node
org.w3c.dom.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.
Summary
Constants | |
---|---|
static Short |
The node is an |
static Short |
The node is a |
static Short |
The node is a |
static Short |
The node is a |
static Short |
The node is a |
static Short |
The node is contained by the reference node. |
static Short |
The node contains the reference node. |
static Short |
The two nodes are disconnected. |
static Short |
The node follows the reference node. |
static Short |
The determination of preceding versus following is implementation-specific. |
static Short |
The second node precedes the reference node. |
static Short |
The node is a |
static Short |
The node is an |
static Short |
The node is an |
static Short |
The node is an |
static Short |
The node is a |
static Short |
The node is a |
static Short |
The node is a |
Public methods | |
---|---|
abstract Node! |
appendChild(newChild: Node!) Adds the node |
abstract Node! |
Returns a duplicate of this node, i. |
abstract Short |
compareDocumentPosition(other: Node!) Compares the reference node, i. |
abstract NamedNodeMap! |
A |
abstract String! |
The absolute base URI of this node or |
abstract NodeList! |
A |
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! |
The first child of this node. |
abstract Node! |
The last child of this node. |
abstract String! |
Returns the local part of the qualified name of this node. |
abstract String! |
The namespace URI of this node, or |
abstract Node! |
The node immediately following this node. |
abstract String! |
The name of this node, depending on its type; see the table above. |
abstract Short |
A code representing the type of the underlying object, as defined above. |
abstract String! |
The value of this node, depending on its type; see the table above. |
abstract Document! |
The |
abstract Node! |
The parent of this node. |
abstract String! |
The namespace prefix of this node, or |
abstract Node! |
The node immediately preceding this node. |
abstract String! |
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 |
Returns whether this node (if it is an element) has any attributes. |
abstract Boolean |
Returns whether this node has any children. |
abstract Node! |
insertBefore(newChild: Node!, refChild: Node!) Inserts the node |
abstract Boolean |
isDefaultNamespace(namespaceURI: String!) This method checks if the specified |
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 |
Puts all |
abstract Node! |
removeChild(oldChild: Node!) Removes the child node indicated by |
abstract Node! |
replaceChild(newChild: Node!, oldChild: Node!) Replaces the child node |
abstract Unit |
setNodeValue(nodeValue: String!) The value of this node, depending on its type; see the table above. |
abstract Unit |
The namespace prefix of this node, or |
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
CDATA_SECTION_NODE
static val CDATA_SECTION_NODE: Short
The node is a CDATASection
.
Value: 4
DOCUMENT_FRAGMENT_NODE
static val DOCUMENT_FRAGMENT_NODE: Short
The node is a DocumentFragment
.
Value: 11
DOCUMENT_POSITION_CONTAINED_BY
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
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
static val DOCUMENT_POSITION_DISCONNECTED: Short
The two nodes are disconnected. Order between disconnected nodes is always implementation-specific.
Value: 1
DOCUMENT_POSITION_FOLLOWING
static val DOCUMENT_POSITION_FOLLOWING: Short
The node follows the reference node.
Value: 4
DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC
static val DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: Short
The determination of preceding versus following is implementation-specific.
Value: 32
DOCUMENT_POSITION_PRECEDING
static val DOCUMENT_POSITION_PRECEDING: Short
The second node precedes the reference node.
Value: 2
DOCUMENT_TYPE_NODE
static val DOCUMENT_TYPE_NODE: Short
The node is a DocumentType
.
Value: 10
ENTITY_REFERENCE_NODE
static val ENTITY_REFERENCE_NODE: Short
The node is an EntityReference
.
Value: 5
NOTATION_NODE
static val NOTATION_NODE: Short
The node is a Notation
.
Value: 12
PROCESSING_INSTRUCTION_NODE
static val PROCESSING_INSTRUCTION_NODE: Short
The node is a ProcessingInstruction
.
Value: 7
Public methods
appendChild
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
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
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
abstract fun getAttributes(): NamedNodeMap!
A NamedNodeMap
containing the attributes of this node (if it is an Element
) or null
otherwise.
getBaseURI
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
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
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
abstract fun getFirstChild(): Node!
The first child of this node. If there is no such node, this returns null
.
getLastChild
abstract fun getLastChild(): Node!
The last child of this node. If there is no such node, this returns null
.
getLocalName
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
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
abstract fun getNextSibling(): Node!
The node immediately following this node. If there is no such node, this returns null
.
getNodeName
abstract fun getNodeName(): String!
The name of this node, depending on its type; see the table above.
getNodeType
abstract fun getNodeType(): Short
A code representing the type of the underlying object, as defined above.
getNodeValue
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
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
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
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
abstract fun getPreviousSibling(): Node!
The node immediately preceding this node. If there is no such node, this returns null
.
getTextContent
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
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
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
abstract fun hasChildNodes(): Boolean
Returns whether this node has any children.
Return | |
---|---|
Boolean |
Returns true if this node has any children, false otherwise. |
insertBefore
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
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
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 bothnull
, or they have the same length and are character for character identical. - The
attributes
NamedNodeMaps
are equal. This is: they are bothnull
, 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 bothnull
, 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
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
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
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
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
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
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
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
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
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
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
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. |