Xerces-C++: DOMElement Class Reference

Xerces-C++ 3.2.4

List of all members
DOMElement Class Referenceabstract

By far the vast majority of objects (apart from text) that authors encounter when traversing a document are `DOMElement` nodes. More...

`#include <xercesc/dom/DOMElement.hpp>`

Inheritance diagram for DOMElement:

## Public Member Functions
Destructor
virtual | ~DOMElement ()
| Destructor. More...
Functions introduced in DOM Level 1
virtual const XMLCh * | getTagName () const =0
| The name of the element. More...
virtual const XMLCh * | getAttribute (const XMLCh *name) const =0
| Retrieves an attribute value by name. More...
virtual DOMAttr * | getAttributeNode (const XMLCh *name) const =0
| Retrieves an `DOMAttr` node by name. More...
virtual DOMNodeList * | getElementsByTagName (const XMLCh *name) const =0
| Returns a `DOMNodeList` of all descendant elements with a given tag name, in the order in which they would be encountered in a preorder traversal of the `DOMElement` tree. More...
virtual void | setAttribute (const XMLCh *name, const XMLCh *value)=0
| Adds a new attribute. More...
virtual DOMAttr * | setAttributeNode (DOMAttr *newAttr)=0
| Adds a new attribute. More...
virtual DOMAttr * | removeAttributeNode (DOMAttr *oldAttr)=0
| Removes the specified attribute node. More...
virtual void | removeAttribute (const XMLCh *name)=0
| Removes an attribute by name. More...
Functions introduced in DOM Level 2.
virtual const XMLCh * | getAttributeNS (const XMLCh *namespaceURI, const XMLCh *localName) const =0
| Retrieves an attribute value by local name and namespace URI. More...
virtual void | setAttributeNS (const XMLCh *namespaceURI, const XMLCh *qualifiedName, const XMLCh *value)=0
| Adds a new attribute. More...
virtual void | removeAttributeNS (const XMLCh *namespaceURI, const XMLCh *localName)=0
| Removes an attribute by local name and namespace URI. More...
virtual DOMAttr * | getAttributeNodeNS (const XMLCh *namespaceURI, const XMLCh *localName) const =0
| Retrieves an `DOMAttr` node by local name and namespace URI. More...
virtual DOMAttr * | setAttributeNodeNS (DOMAttr *newAttr)=0
| Adds a new attribute. More...
virtual DOMNodeList * | getElementsByTagNameNS (const XMLCh *namespaceURI, const XMLCh *localName) const =0
| Returns a `DOMNodeList` of all the `DOMElement`s with a given local name and namespace URI in the order in which they would be encountered in a preorder traversal of the `DOMDocument` tree, starting from this node. More...
virtual bool | hasAttribute (const XMLCh *name) const =0
| Returns `true` when an attribute with a given name is specified on this element or has a default value, `false` otherwise. More...
virtual bool | hasAttributeNS (const XMLCh *namespaceURI, const XMLCh *localName) const =0
| Returns `true` when an attribute with a given local name and namespace URI is specified on this element or has a default value, `false` otherwise. More...
Functions introduced in DOM Level 3
virtual void | setIdAttribute (const XMLCh *name, bool isId)=0
| If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute. More...
virtual void | setIdAttributeNS (const XMLCh *namespaceURI, const XMLCh *localName, bool isId)=0
| If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute. More...
virtual void | setIdAttributeNode (const DOMAttr *idAttr, bool isId)=0
| If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute. More...
virtual const DOMTypeInfo * | getSchemaTypeInfo () const =0
| Returns the type information associated with this element. More...
Functions introduced in the ElementTraversal specification (http://www.w3.org/TR/2008/REC-ElementTraversal-20081222/)
virtual DOMElement * | getFirstElementChild () const =0
| The first child of type DOMElement. More...
virtual DOMElement * | getLastElementChild () const =0
| The last child of type DOMElement. More...
virtual DOMElement * | getPreviousElementSibling () const =0
| The previous sibling node of type DOMElement. More...
virtual DOMElement * | getNextElementSibling () const =0
| The next sibling node of type DOMElement. More...
virtual XMLSize_t | getChildElementCount () const =0
| The number of child nodes that are of type DOMElement. More...
Public Member Functions inherited from DOMNode
virtual | ~DOMNode ()
| Destructor. More...
virtual const XMLCh * | getNodeName () const =0
| The name of this node, depending on its type; see the table above. More...
virtual const XMLCh * | getNodeValue () const =0
| Gets the value of this node, depending on its type. More...
virtual NodeType | getNodeType () const =0
| An enum value representing the type of the underlying object. More...
virtual DOMNode * | getParentNode () const =0
| Gets the parent of this node. More...
virtual DOMNodeList * | getChildNodes () const =0
| Gets a `DOMNodeList` that contains all children of this node. More...
virtual DOMNode * | getFirstChild () const =0
| Gets the first child of this node. More...
virtual DOMNode * | getLastChild () const =0
| Gets the last child of this node. More...
virtual DOMNode * | getPreviousSibling () const =0
| Gets the node immediately preceding this node. More...
virtual DOMNode * | getNextSibling () const =0
| Gets the node immediately following this node. More...
virtual DOMNamedNodeMap * | getAttributes () const =0
| Gets a `DOMNamedNodeMap` containing the attributes of this node (if it is an `DOMElement`) or `null` otherwise. More...
virtual DOMDocument * | getOwnerDocument () const =0
| Gets the `DOMDocument` object associated with this node. More...
virtual DOMNode * | cloneNode (bool deep) const =0
| Returns a duplicate of this node. More...
virtual DOMNode * | insertBefore (DOMNode *newChild, DOMNode *refChild)=0
| Inserts the node `newChild` before the existing child node `refChild`. More...
virtual DOMNode * | replaceChild (DOMNode *newChild, DOMNode *oldChild)=0
| Replaces the child node `oldChild` with `newChild` in the list of children, and returns the `oldChild` node. More...
virtual DOMNode * | removeChild (DOMNode *oldChild)=0
| Removes the child node indicated by `oldChild` from the list of children, and returns it. More...
virtual DOMNode * | appendChild (DOMNode *newChild)=0
| Adds the node `newChild` to the end of the list of children of this node. More...
virtual bool | hasChildNodes () const =0
| This is a convenience method to allow easy determination of whether a node has any children. More...
virtual void | setNodeValue (const XMLCh *nodeValue)=0
| Sets the value of the node. More...
virtual void | normalize ()=0
| Puts all `DOMText` nodes in the full depth of the sub-tree underneath this `DOMNode`, including attribute nodes, into a "normal" form where only markup (e.g., tags, comments, processing instructions, CDATA sections, and entity references) separates `DOMText` nodes, i.e., there are neither adjacent `DOMText` nodes nor empty `DOMText` nodes. More...
virtual bool | isSupported (const XMLCh *feature, const XMLCh *version) const =0
| Tests whether the DOM implementation implements a specific feature and that feature is supported by this node. More...
virtual const XMLCh * | getNamespaceURI () const =0
| Get the namespace URI of this node, or `null` if it is unspecified. More...
virtual const XMLCh * | getPrefix () const =0
| Get the namespace prefix of this node, or `null` if it is unspecified. More...
virtual const XMLCh * | getLocalName () const =0
| Returns the local part of the qualified name of this node. More...
virtual void | setPrefix (const XMLCh *prefix)=0
| Set the namespace prefix of this node. More...
virtual bool | hasAttributes () const =0
| Returns whether this node (if it is an element) has any attributes. More...
virtual bool | isSameNode (const DOMNode *other) const =0
| Returns whether this node is the same node as the given one. More...
virtual bool | isEqualNode (const DOMNode *arg) const =0
| Tests whether two nodes are equal. More...
virtual void * | setUserData (const XMLCh *key, void *data, DOMUserDataHandler *handler)=0
| Associate an object to a key on this node. More...
virtual void * | getUserData (const XMLCh *key) const =0
| Retrieves the object associated to a key on a this node. More...
virtual const XMLCh * | getBaseURI () const =0
| The absolute base URI of this node or `null` if undefined. More...
virtual short | compareDocumentPosition (const DOMNode *other) const =0
| Compares the reference node, i.e. More...
virtual const XMLCh * | getTextContent () const =0
| WARNING: This method is known to be buggy and does not produce accurate results under a variety of conditions. More...
virtual void | setTextContent (const XMLCh *textContent)=0
| This attribute removes any possible children this node may have and, if the new string is not empty or null, replaced by a single `DOMText` node containing the string this attribute is set to. More...
virtual const XMLCh * | lookupPrefix (const XMLCh *namespaceURI) const =0
| Look up the prefix associated to the given namespace URI, starting from this node. More...
virtual bool | isDefaultNamespace (const XMLCh *namespaceURI) const =0
| This method checks if the specified `namespaceURI` is the default namespace or not. More...
virtual const XMLCh * | lookupNamespaceURI (const XMLCh *prefix) const =0
| Look up the namespace URI associated to the given prefix, starting from this node. More...
virtual void * | getFeature (const XMLCh *feature, const XMLCh *version) const =0
| This method makes available a `DOMNode`'s specialized interface. More...
virtual void | release ()=0
| Called to indicate that this Node (and its associated children) is no longer in use and that the implementation may relinquish any resources associated with it and its associated children. More...

## Protected Member Functions
Hidden constructors
| DOMElement ()
| DOMElement (const DOMElement &other)
Protected Member Functions inherited from DOMNode
| DOMNode ()
| DOMNode (const DOMNode &)

## Additional Inherited Members
Public Types inherited from DOMNode
enum | NodeType { ELEMENT_NODE = 1 , ATTRIBUTE_NODE = 2 , TEXT_NODE = 3 , CDATA_SECTION_NODE = 4 , ENTITY_REFERENCE_NODE = 5 , ENTITY_NODE = 6 , PROCESSING_INSTRUCTION_NODE = 7 , COMMENT_NODE = 8 , DOCUMENT_NODE = 9 , DOCUMENT_TYPE_NODE = 10 , DOCUMENT_FRAGMENT_NODE = 11 , NOTATION_NODE = 12 }
| NodeType. More...
enum | DocumentPosition { DOCUMENT_POSITION_DISCONNECTED = 0x01 , DOCUMENT_POSITION_PRECEDING = 0x02 , DOCUMENT_POSITION_FOLLOWING = 0x04 , DOCUMENT_POSITION_CONTAINS = 0x08 , DOCUMENT_POSITION_CONTAINED_BY = 0x10 , DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20 }
| DocumentPosition: More...

## Detailed Description

By far the vast majority of objects (apart from text) that authors encounter when traversing a document are `DOMElement` nodes.

Assume the following XML document:<elementExample id="demo"> <subelement1/> <subelement2><subsubelement/></subelement2> </elementExample>

When represented using DOM, the top node is an `DOMElement` node for "elementExample", which contains two child `DOMElement` nodes, one for "subelement1" and one for "subelement2". "subelement1" contains no child nodes.

Elements may have attributes associated with them; since the `DOMElement` interface inherits from `DOMNode`, the generic `DOMNode` interface method `getAttributes` may be used to retrieve the set of all attributes for an element. There are methods on the `DOMElement` interface to retrieve either an `DOMAttr` object by name or an attribute value by name. In XML, where an attribute value may contain entity references, an `DOMAttr` object should be retrieved to examine the possibly fairly complex sub-tree representing the attribute value. On the other hand, in HTML, where all attributes have simple string values, methods to directly access an attribute value can safely be used as a convenience.

Since
  DOM Level 1

It also defines the ElementTraversal helper interface defined by http://www.w3.org/TR/2008/REC-ElementTraversal-20081222/

## Constructor & Destructor Documentation

## ◆ DOMElement() [1/2]

DOMElement::DOMElement | ( |  | ) |
| protected

## ◆ DOMElement() [2/2]

DOMElement::DOMElement | ( | const DOMElement & | other | ) |
| protected

## ◆ ~DOMElement()

virtual DOMElement::~DOMElement | ( |  | ) |
| virtual

Destructor.

## Member Function Documentation

## ◆ getAttribute()

virtual const XMLCh * DOMElement::getAttribute | ( | const XMLCh * | name | ) | const
| pure virtual

Retrieves an attribute value by name.

Parameters

  name | The name of the attribute to retrieve.

Returns
  The `DOMAttr` value as a string, or the empty string if that attribute does not have a specified or default value.

Since
  DOM Level 1

## ◆ getAttributeNode()

virtual DOMAttr * DOMElement::getAttributeNode | ( | const XMLCh * | name | ) | const
| pure virtual

Retrieves an `DOMAttr` node by name.

Parameters

  name | The name (`nodeName`) of the attribute to retrieve.

Returns
  The `DOMAttr` node with the specified name (`nodeName`) or `null` if there is no such attribute.

Since
  DOM Level 1

## ◆ getAttributeNodeNS()

virtual DOMAttr * DOMElement::getAttributeNodeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName
| ) |  | const
| pure virtual

Retrieves an `DOMAttr` node by local name and namespace URI.

Parameters

  namespaceURI | The namespace URI of the attribute to retrieve.
  localName | The local name of the attribute to retrieve.

Returns
  The `DOMAttr` node with the specified attribute local name and namespace URI or `null` if there is no such attribute.

Since
  DOM Level 2

## ◆ getAttributeNS()

virtual const XMLCh * DOMElement::getAttributeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName
| ) |  | const
| pure virtual

Retrieves an attribute value by local name and namespace URI.

Parameters

  namespaceURI | The namespace URI of the attribute to retrieve.
  localName | The local name of the attribute to retrieve.

Returns
  The `DOMAttr` value as a string, or an `null` if that attribute does not have a specified or default value.

Since
  DOM Level 2

## ◆ getChildElementCount()

virtual XMLSize_t DOMElement::getChildElementCount | ( |  | ) | const
| pure virtual

The number of child nodes that are of type DOMElement.

Note: the count is computed every time this function is invoked

Returns
  The number of `DOMElement` objects that are direct children of this object (nested elements are not counted), or `0` if there is none.

## ◆ getElementsByTagName()

virtual DOMNodeList * DOMElement::getElementsByTagName | ( | const XMLCh * | name | ) | const
| pure virtual

Returns a `DOMNodeList` of all descendant elements with a given tag name, in the order in which they would be encountered in a preorder traversal of the `DOMElement` tree.

Parameters

  name | The name of the tag to match on. The special value "*" matches all tags.

Returns
  A list of matching `DOMElement` nodes.

Since
  DOM Level 1

## ◆ getElementsByTagNameNS()

virtual DOMNodeList * DOMElement::getElementsByTagNameNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName
| ) |  | const
| pure virtual

Returns a `DOMNodeList` of all the `DOMElement`s with a given local name and namespace URI in the order in which they would be encountered in a preorder traversal of the `DOMDocument` tree, starting from this node.

Parameters

  namespaceURI | The namespace URI of the elements to match on. The special value "*" matches all namespaces.
  localName | The local name of the elements to match on. The special value "*" matches all local names.

Returns
  A new `DOMNodeList` object containing all the matched `DOMElement`s.

Since
  DOM Level 2

## ◆ getFirstElementChild()

virtual DOMElement * DOMElement::getFirstElementChild | ( |  | ) | const
| pure virtual

The first child of type DOMElement.

Returns
  The `DOMElement` object that is the first element node among the child nodes of this node, or `null` if there is none.

## ◆ getLastElementChild()

virtual DOMElement * DOMElement::getLastElementChild | ( |  | ) | const
| pure virtual

The last child of type DOMElement.

Returns
  The `DOMElement` object that is the last element node among the child nodes of this node, or `null` if there is none.

## ◆ getNextElementSibling()

virtual DOMElement * DOMElement::getNextElementSibling | ( |  | ) | const
| pure virtual

The next sibling node of type DOMElement.

Returns
  The `DOMElement` object that is the next sibling element node in document order, or `null` if there is none.

## ◆ getPreviousElementSibling()

virtual DOMElement * DOMElement::getPreviousElementSibling | ( |  | ) | const
| pure virtual

The previous sibling node of type DOMElement.

Returns
  The `DOMElement` object that is the previous sibling element node in document order, or `null` if there is none.

## ◆ getSchemaTypeInfo()

virtual const DOMTypeInfo * DOMElement::getSchemaTypeInfo | ( |  | ) | const
| pure virtual

Returns the type information associated with this element.

Returns
  the `DOMTypeInfo` associated with this element

Since
  DOM level 3

## ◆ getTagName()

virtual const XMLCh * DOMElement::getTagName | ( |  | ) | const
| pure virtual

The name of the element.

For example, in: <elementExample id="demo"> ... </elementExample> , `tagName` has the value `"elementExample"`. Note that this is case-preserving in XML, as are all of the operations of the DOM.

Since
  DOM Level 1

## ◆ hasAttribute()

virtual bool DOMElement::hasAttribute | ( | const XMLCh * | name | ) | const
| pure virtual

Returns `true` when an attribute with a given name is specified on this element or has a default value, `false` otherwise.

Parameters

  name | The name of the attribute to look for.

Returns
  `true` if an attribute with the given name is specified on this element or has a default value, `false` otherwise.

Since
  DOM Level 2

## ◆ hasAttributeNS()

virtual bool DOMElement::hasAttributeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName
| ) |  | const
| pure virtual

Returns `true` when an attribute with a given local name and namespace URI is specified on this element or has a default value, `false` otherwise.

HTML-only DOM implementations do not need to implement this method.

Parameters

  namespaceURI | The namespace URI of the attribute to look for.
  localName | The local name of the attribute to look for.

Returns
  `true` if an attribute with the given local name and namespace URI is specified or has a default value on this element, `false` otherwise.

Since
  DOM Level 2

## ◆ removeAttribute()

virtual void DOMElement::removeAttribute | ( | const XMLCh * | name | ) |
| pure virtual

Removes an attribute by name.

If the removed attribute is known to have a default value, an attribute immediately appears containing the default value as well as the corresponding namespace URI, local name, and prefix when applicable.
To remove an attribute by local name and namespace URI, use the `removeAttributeNS` method.

Parameters

  name | The name of the attribute to remove.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

Since
  DOM Level 1

## ◆ removeAttributeNode()

virtual DOMAttr * DOMElement::removeAttributeNode | ( | DOMAttr * | oldAttr | ) |
| pure virtual

Removes the specified attribute node.

If the removed `DOMAttr` has a default value it is immediately replaced. The replacing attribute has the same namespace URI and local name, as well as the original prefix, when applicable.

Parameters

  oldAttr | The `DOMAttr` node to remove from the attribute list.

Returns
  The `DOMAttr` node that was removed.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NOT_FOUND_ERR: Raised if `oldAttr` is not an attribute of the element.

Since
  DOM Level 1

## ◆ removeAttributeNS()

virtual void DOMElement::removeAttributeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName
| ) |  |
| pure virtual

Removes an attribute by local name and namespace URI.

If the removed attribute has a default value it is immediately replaced. The replacing attribute has the same namespace URI and local name, as well as the original prefix.

Parameters

  namespaceURI | The namespace URI of the attribute to remove.
  localName | The local name of the attribute to remove.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

Since
  DOM Level 2

## ◆ setAttribute()

virtual void DOMElement::setAttribute | ( | const XMLCh * | name,
|  | const XMLCh * | value
| ) |  |
| pure virtual

Adds a new attribute.

If an attribute with that name is already present in the element, its value is changed to be that of the value parameter. This value is a simple string, it is not parsed as it is being set. So any markup (such as syntax to be recognized as an entity reference) is treated as literal text, and needs to be appropriately escaped by the implementation when it is written out. In order to assign an attribute value that contains entity references, the user must create an `DOMAttr` node plus any `DOMText` and `DOMEntityReference` nodes, build the appropriate subtree, and use `setAttributeNode` to assign it as the value of an attribute.

Parameters

  name | The name of the attribute to create or alter.
  value | Value to set in string form.

Exceptions

  DOMException | INVALID_CHARACTER_ERR: Raised if the specified name contains an illegal character. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

Since
  DOM Level 1

## ◆ setAttributeNode()

virtual DOMAttr * DOMElement::setAttributeNode | ( | DOMAttr * | newAttr | ) |
| pure virtual

Adds a new attribute.

If an attribute with that name (`nodeName`) is already present in the element, it is replaced by the new one.

Parameters

  newAttr | The `DOMAttr` node to add to the attribute list.

Returns
  If the `newAttr` attribute replaces an existing attribute, the replaced `DOMAttr` node is returned, otherwise `null` is returned.

Exceptions

  DOMException | WRONG_DOCUMENT_ERR: Raised if `newAttr` was created from a different document than the one that created the element. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. INUSE_ATTRIBUTE_ERR: Raised if `newAttr` is already an attribute of another `DOMElement` object. The DOM user must explicitly clone `DOMAttr` nodes to re-use them in other elements.

Since
  DOM Level 1

## ◆ setAttributeNodeNS()

virtual DOMAttr * DOMElement::setAttributeNodeNS | ( | DOMAttr * | newAttr | ) |
| pure virtual

Adds a new attribute.

If an attribute with that local name and namespace URI is already present in the element, it is replaced by the new one.

Parameters

  newAttr | The `DOMAttr` node to add to the attribute list.

Returns
  If the `newAttr` attribute replaces an existing attribute with the same local name and namespace URI, the replaced `DOMAttr` node is returned, otherwise `null` is returned.

Exceptions

  DOMException | WRONG_DOCUMENT_ERR: Raised if `newAttr` was created from a different document than the one that created the element. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. INUSE_ATTRIBUTE_ERR: Raised if `newAttr` is already an attribute of another `DOMElement` object. The DOM user must explicitly clone `DOMAttr` nodes to re-use them in other elements.

Since
  DOM Level 2

## ◆ setAttributeNS()

virtual void DOMElement::setAttributeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | qualifiedName,
|  | const XMLCh * | value
| ) |  |
| pure virtual

Adds a new attribute.

If an attribute with the same local name and namespace URI is already present on the element, its prefix is changed to be the prefix part of the `qualifiedName`, and its value is changed to be the `value` parameter. This value is a simple string, it is not parsed as it is being set. So any markup (such as syntax to be recognized as an entity reference) is treated as literal text, and needs to be appropriately escaped by the implementation when it is written out. In order to assign an attribute value that contains entity references, the user must create an `DOMAttr` node plus any `DOMText` and `DOMEntityReference` nodes, build the appropriate subtree, and use `setAttributeNodeNS` or `setAttributeNode` to assign it as the value of an attribute.

Parameters

  namespaceURI | The namespace URI of the attribute to create or alter.
  qualifiedName | The qualified name of the attribute to create or alter.
  value | The value to set in string form.

Exceptions

  DOMException | INVALID_CHARACTER_ERR: Raised if the specified qualified name contains an illegal character. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NAMESPACE_ERR: Raised if the `qualifiedName` is malformed, if the `qualifiedName` has a prefix and the `namespaceURI` is `null` or an empty string, if the `qualifiedName` has a prefix that is "xml" and the `namespaceURI` is different from "http://www.w3.org/XML/1998/namespace", if the `qualifiedName` has a prefix that is "xmlns" and the `namespaceURI` is different from "http://www.w3.org/2000/xmlns/", or if the `qualifiedName` is "xmlns" and the `namespaceURI` is different from "http://www.w3.org/2000/xmlns/".

Since
  DOM Level 2

## ◆ setIdAttribute()

virtual void DOMElement::setIdAttribute | ( | const XMLCh * | name,
|  | bool | isId
| ) |  |
| pure virtual

If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute.

This affects the value of `DOMAttr::isId` and the behavior of `DOMDocument::getElementById`, but does not change any schema that may be in use, in particular this does not affect the `DOMAttr::getSchemaTypeInfo` of the specified DOMAttr node. Use the value `false` for the parameter isId to undeclare an attribute for being a user-determined ID attribute. To specify an `DOMAttr` by local name and namespace URI, use the setIdAttributeNS method.

Parameters

  name | The name of the `DOMAttr`.
  isId | Whether the attribute is of type ID.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NOT_FOUND_ERR: Raised if the specified node is not an `DOMAttr` of this element.

Since
  DOM Level 3

## ◆ setIdAttributeNode()

virtual void DOMElement::setIdAttributeNode | ( | const DOMAttr * | idAttr,
|  | bool | isId
| ) |  |
| pure virtual

If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute.

This affects the value of `DOMAttr::isId` and the behavior of `DOMDocument::getElementById`, but does not change any schema that may be in use, in particular this does not affect the `DOMAttr::getSchemaTypeInfo` of the specified DOMAttr node. Use the value `false` for the parameter isId to undeclare an attribute for being a user-determined ID attribute.

Parameters

  idAttr | The `DOMAttr` node.
  isId | Whether the attribute is of type ID.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NOT_FOUND_ERR: Raised if the specified node is not an `DOMAttr` of this element.

Since
  DOM Level 3

## ◆ setIdAttributeNS()

virtual void DOMElement::setIdAttributeNS | ( | const XMLCh * | namespaceURI,
|  | const XMLCh * | localName,
|  | bool | isId
| ) |  |
| pure virtual

If the parameter isId is `true`, this method declares the specified attribute to be a user-determined ID attribute.

This affects the value of `DOMAttr::isId` and the behavior of `DOMDocument::getElementById`, but does not change any schema that may be in use, in particular this does not affect the `DOMAttr::getSchemaTypeInfo` of the specified DOMAttr node. Use the value `false` for the parameter isId to undeclare an attribute for being a user-determined ID attribute.

Parameters

  namespaceURI | The namespace URI of the `DOMAttr`.
  localName | The local name of the `DOMAttr`.
  isId | Whether the attribute is of type ID.

Exceptions

  DOMException | NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. NOT_FOUND_ERR: Raised if the specified node is not an `DOMAttr` of this element.

Since
  DOM Level 3

The documentation for this class was generated from the following file:

- DOMElement.hpp