Element Class
The Element interface represents an element in an HTML or XML document.
Inheritance Hierarchy

Namespace: Aspose.Html.Dom
Assembly: Aspose.HTML (in Aspose.HTML.dll) Version: 21.11
Syntax
public class Element : Node, IParentNode, 
	IElementTraversal, IChildNode

The Element type exposes the following members.

Constructors
  NameDescription
Public methodElement

Initializes a new instance of the Element class. Don't call this constructor directly, use CreateElement(String) or CreateElementNS(String, String).

Properties
  NameDescription
Public propertyAttributes
A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.
(Overrides NodeAttributes.)
Public propertyBaseURI

The read-only baseURI property of the Node interface returns the absolute base URL of the document containing the node.

The base URL is used to resolve relative URLs when the browser needs to obtain an absolute URL, for example when processing the HTML img element's src attribute or the xlink:href or href attributes in SVG.

(Inherited from Node.)
Public propertyChildElementCount
Returns the current number of element nodes that are children of this element. 0 if this element has no child nodes that are of nodeType 1.
Public propertyChildNodes

The read-only childNodes property of the Node interface returns a live NodeList of child nodes of the given element where the first child node is assigned index 0. Child nodes include elements, text and comments.

Note: The NodeList being live means that its content is changed each time new children are added or removed.
(Inherited from Node.)
Public propertyChildren
Returns the child elements of current element.
Public propertyClassList
Returns a live DOMTokenList which contains tokens received from parsing the "class" attribute.
Public propertyClassName
The class attribute of the element. This attribute has been renamed due to conflicts with the "class" keyword exposed by many languages. See the class attribute definition in HTML 4.01.
Public propertyFirstChild

The read-only firstChild property of the Node interface returns the node's first child in the tree, or null if the node has no children.

If the node is a Document, this property returns the first node in the list of its direct children.

(Inherited from Node.)
Public propertyFirstElementChild
Returns the first child element node of this element. null if this element has no child elements.
Public propertyId
The element's identifier. See the id attribute definition in HTML 4.01.
Public propertyInnerHTML
Returns a fragment of HTML or XML that represents the element's contents. Can be set, to replace the contents of the element with nodes parsed from the given string.
Public propertyLastChild

The read-only lastChild property of the Node interface returns the last child of the node. If its parent is an element, then the child is generally an element node, a text node, or a comment node. It returns null if there are no child elements

(Inherited from Node.)
Public propertyLastElementChild
Returns the last child element node of this element. null if this element has no child elements.
Public propertyLocalName
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.
(Overrides NodeLocalName.)
Public propertyNamespaceURI
The namespace URI of this node, or null if it is unspecified.
(Overrides NodeNamespaceURI.)
Public propertyNextElementSibling
Returns the next sibling element node of this element. null if this element has no element sibling nodes that come after this one in the document tree.
Public propertyNextSibling

The read-only nextSibling property of the Node interface returns the node immediately following the specified one in their parent's childNodes, or returns null if the specified node is the last child in the parent element.

(Inherited from Node.)
Public propertyNodeName
The name of this node, depending on its type.
(Overrides NodeNodeName.)
Public propertyNodeType
A code representing the type of the underlying object.
(Overrides NodeNodeType.)
Public propertyNodeValue

The nodeValue property of the Node interface returns or sets the value of the current node.

(Inherited from Node.)
Public propertyOuterHTML
Returns a fragment of HTML or XML that represents the element and its contents. Can be set, to replace the element with nodes parsed from the given string.
Public propertyOwnerDocument

The read-only ownerDocument property of the Node interface returns the top-level document object of the node.

(Inherited from Node.)
Public propertyParentElement

The read-only parentElement property of Node interface returns the DOM node's parent Element, or null if the node either has no parent, or its parent isn't a DOM Element.

(Inherited from Node.)
Public propertyParentNode

The read-only parentNode property of the Node interface returns the parent of the specified node in the DOM tree.

Document and DocumentFragment nodes can never have a parent, so parentNode will always return null. It also returns null if the node has just been created and is not yet attached to the tree.

(Inherited from Node.)
Public propertyPrefix
The namespace prefix of this node, or null if it is unspecified. When it is defined to be null, setting it has no effect
(Overrides NodePrefix.)
Public propertyPreviousElementSibling
Returns the previous sibling element node of this element. null if this element has no element sibling nodes that come before this one in the document tree.
Public propertyPreviousSibling

The read-only previousSibling property of the Node interface returns the node immediately preceding the specified one in its parent's childNodes list, or null if the specified node is the first in that list.

(Inherited from Node.)
Public propertySchemaTypeInfo
The type information associated with this element.
Public propertyShadowRoot
Returns shadowRoot stored on this element or null if it's closed.
Public propertyTagName
The name of the element.
Public propertyTextContent
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.
(Overrides NodeTextContent.)
Methods
  NameDescription
Public methodAddEventListener(String, IEventListener)

The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.

It works by adding a function, or an object that implements EventListener, to the list of event listeners for the specified event type on the EventTarget on which it's called. If the function or object, is already in the list of event listeners for this target, they are not added a second time.

(Inherited from EventTarget.)
Public methodAddEventListener(String, DOMEventHandler, Boolean)

The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.

It works by adding a function, or an object that implements EventListener, to the list of event listeners for the specified event type on the EventTarget on which it's called. If the function or object, is already in the list of event listeners for this target, they are not added a second time.

(Inherited from EventTarget.)
Public methodAddEventListener(String, IEventListener, Boolean)

The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.

It works by adding a function, or an object that implements EventListener, to the list of event listeners for the specified event type on the EventTarget on which it's called. If the function or object, is already in the list of event listeners for this target, they are not added a second time.

(Inherited from EventTarget.)
Public methodAppendChild

The appendChild() method of the Node interface adds a node to the end of the list of children of a specified parent node. If the given child is a reference to an existing node in the document, appendChild() moves it from its current position to the new position (there is no requirement to remove the node from its parent node before appending it to some other node).

This means that a node can't be in two points of the document simultaneously. So if the node already has a parent, the node is first removed, then appended at the new position. The Node.cloneNode() method can be used to make a copy of the node before appending it under the new parent. Copies made with cloneNode are not be automatically kept in sync.

(Inherited from Node.)
Public methodAttachShadow
Creates shadow root and attaches it to current element.
Public methodCloneNode

The cloneNode() method of the Node interface returns a duplicate of the node on which this method was called. Its parameter controls if the subtree contained in a node is also cloned or not.

Cloning a node copies all of its attributes and their values, including intrinsic (inline) listeners. It does not copy event listeners added using addEventListener() or those assigned to element properties (e.g., node.onclick = someFunction). Additionally, for a <canvas> element, the painted image is not copied.

(Inherited from Node.)
Public methodCloneNode(Boolean)

The cloneNode() method of the Node interface returns a duplicate of the node on which this method was called. Its parameter controls if the subtree contained in a node is also cloned or not.

Cloning a node copies all of its attributes and their values, including intrinsic (inline) listeners. It does not copy event listeners added using addEventListener() or those assigned to element properties (e.g., node.onclick = someFunction). Additionally, for a <canvas> element, the painted image is not copied.

(Inherited from Node.)
Public methodDispatchEvent

Dispatches an Event at the specified EventTarget, (synchronously) invoking the affected EventListeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().

(Inherited from EventTarget.)
Public methodDispose
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
(Inherited from EventTarget.)
Protected methodDispose(Boolean)
Releases unmanaged and - optionally - managed resources.
(Overrides NodeDispose(Boolean).)
Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Protected methodFinalize
Finalizes an instance of the Node class.
(Inherited from Node.)
Public methodGetAttribute
Retrieves an attribute value by name.
Public methodGetAttributeNode
Retrieves an attribute node by name.
Public methodGetAttributeNodeNS
Retrieves an Attr node by local name and namespace URI.
Public methodGetAttributeNS
Retrieves an attribute value by local name and namespace URI.
Public methodGetElementsByClassName
Returns a live NodeList object containing all the elements in the document that have all the classes specified in argument. http://www.w3.org/TR/dom/
Public methodGetElementsByTagName
Returns a NodeList of all descendant Elements with a given tag name, in document order.
Public methodGetElementsByTagNameNS
Returns a NodeList of all the descendant Elements with a given local name and namespace URI in document order.
Public methodGetHashCode
Serves as a hash function for a particular type.
(Inherited from Object.)
Public methodGetPlatformType

This method is used to retrieve the ECMAScript object .

(Inherited from DOMObject.)
Public methodGetType
Gets the type of the current instance.
(Inherited from Object.)
Public methodHasAttribute
Returns true when an attribute with a given name is specified on this element or has a default value, false otherwise.
Public methodHasAttributeNS
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.
Public methodHasAttributes
Returns whether this node (if it is an element) has any attributes
(Overrides NodeHasAttributes.)
Public methodHasChildNodes

The hasChildNodes() method of the Node interface returns a boolean value indicating whether the given Node has child nodes or not.

(Inherited from Node.)
Public methodInsertBefore

The insertBefore() method of the Node interface inserts a node before a reference node as a child of a specified parent node.

If the given node already exists in the document, insertBefore() moves it from its current position to the new position. (That is, it will automatically be removed from its existing parent before appending it to the specified new parent.)

This means that a node cannot be in two locations of the document simultaneously.

(Inherited from Node.)
Public methodIsDefaultNamespace

The isDefaultNamespace() method of the Node interface accepts a namespace URI as an argument. It returns a boolean value that is true if the namespace is the default namespace on the given node and false if not.

Note: The default namespace of an HTML element is always "". For a SVG element, it is set by the xmlns attribute.
(Inherited from Node.)
Public methodIsEqualNode

The isEqualNode() method of the Node interface tests whether two nodes are equal. Two nodes are equal when they have the same type, defining characteristics (for elements, this would be their ID, number of children, and so forth), its attributes match, and so on. The specific set of data points that must match varies depending on the types of the nodes.

(Inherited from Node.)
Public methodIsSameNode

The isSameNode() method of the Node interface is a legacy alias the for the === strict equality operator. That is, it tests whether two nodes are the same (in other words, whether they reference the same object).

Note: There is no need to use isSameNode(); instead use the === strict equality operator.
(Inherited from Node.)
Public methodLookupNamespaceURI

The lookupNamespaceURI() method of the Node interface takes a prefix as parameter and returns the namespace URI associated with it on the given node if found (and null if not).

(Inherited from Node.)
Public methodLookupPrefix

The lookupPrefix() method of the Node interface returns a String containing the prefix for a given namespace URI, if present, and null if not. When multiple prefixes are possible, the first prefix is returned.

(Inherited from Node.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodNormalize

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.

(Inherited from Node.)
Public methodQuerySelector
Returns the first Element in document, which match selector
Public methodQuerySelectorAll
Returns a NodeList of all the Elements in document, which match selector
Public methodRemove
Removes this instance.
Public methodRemoveAttribute
Removes an attribute by name.
Public methodRemoveAttributeNode
Removes the specified attribute node.
Public methodRemoveAttributeNS
Removes an attribute by local name and namespace URI.
Public methodRemoveChild

The removeChild() method of the Node interface removes a child node from the DOM and returns the removed node.

Note: As long as a reference is kept on the removed child, it still exists in memory, but is no longer part of the DOM. It can still be reused later in the code. If the return value of removeChild() is not stored, and no other reference is kept, it will be automatically deleted from memory after a short time.
(Inherited from Node.)
Public methodRemoveEventListener(String, IEventListener)

This method allows the removal of event listeners from the event target. If an is removed from an while it is processing an event, it will not be triggered by the current actions. Event Listeners can never be invoked after being removed.

(Inherited from EventTarget.)
Public methodRemoveEventListener(String, DOMEventHandler, Boolean)

This method allows the removal of event listeners from the event target. If an is removed from an while it is processing an event, it will not be triggered by the current actions. Event Listeners can never be invoked after being removed.

(Inherited from EventTarget.)
Public methodRemoveEventListener(String, IEventListener, Boolean)

This method allows the removal of event listeners from the event target. If an is removed from an while it is processing an event, it will not be triggered by the current actions. Event Listeners can never be invoked after being removed.

(Inherited from EventTarget.)
Public methodReplaceChild

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.

(Inherited from Node.)
Public methodSetAttribute
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
Public methodSetAttributeNode
Adds a new attribute node. If an attribute with that name (nodeName) is already present in the element, it is replaced by the new one.
Public methodSetAttributeNodeNS
Adds a new attribute. If an attribute with that local name and that namespace URI is already present in the element, it is replaced by the new one.
Public methodSetAttributeNS
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.
Public methodSetIdAttribute
If the parameter isId is true, this method declares the specified attribute to be a user-determined ID attribute.
Public methodSetIdAttributeNode
If the parameter isId is true, this method declares the specified attribute to be a user-determined ID attribute.
Public methodSetIdAttributeNS
If the parameter isId is true, this method declares the specified attribute to be a user-determined ID attribute.
Public methodToString
Returns a String that represents this instance.
(Inherited from Node.)
See Also