javascript node element

Node (W3C DOM Core object)

SPECVersionDepr.DOM1NO

Example

<h1 id="greeting">Be excellent to each other</h1>

In the example above, h1 is an Element node, id="greeting" is an Attr node, and the text inside the heading is a Text node.

Description

The Node interface is the primary data type for the Document Object Model (DOM). It represents any single item in the tree, such as an Element, Attr, Document or Entity.

Whether a Node may have children depends on its type.

The following table is an overview of each of the core interfaces, showing how thenodeName and nodeType returns, and what kind of children the node is allowed to have.

Table 1. A summary of universal Node propertiesInterfacenodeNamenodeTypeChildrenElementThe tag name, eg.HTML1Element, Text, Comment,ProcessingInstruction,CDATASection,EntityReferenceAttrThe attribute name, eg.id2Text, EntityReference¹Text#text3Cannot have childrenCDATASection#cdata-section4Cannot have childrenEntityReferenceThe name of the entity reference, eg. amp5Element,ProcessingInstruction,Comment, Text,CDATASection,EntityReferenceEntityThe entity name, eg.&6Element,ProcessingInstruction,Comment, Text,CDATASection,EntityReferenceProcessingInstructionThe target of the processing instruction, eg. xml-stylesheet7Cannot have childrenComment#comment8Cannot have childrenDocument#document9Element (one only),ProcessingInstruction,Comment, DocumentType(one only)DocumentTypeThe name of the document type, eg.html10Cannot have childrenDocumentFragment#document-fragment11Element,ProcessingInstruction,Comment, Text,CDATASection,EntityReferenceNotationThe notation name12Cannot have children

In this Section

• appendChild
  Add a new node and its subtree to the end of the list of children of this node.
• attributes
  An unordered list of all the effective attributes that apply to an element.
• childNodes
  An ordered list of all the child nodes of this node.
• cloneNode
  Create a duplicate of this node, including all attributes and their values.
• firstChild
  The first node that is a direct child of this node.
• hasAttributes
  Whether an element has any attributes.
• hasChildNodes
  Returns whether this node has any child nodes.
• insertBefore
  Insert a new node as a child of this node, directly before an existing child of this node.
• isSupported
  Whether a specific feature of the DOM is implemented, and supported by this node.
• lastChild
  The last node that is a direct child of this node.
• localName
  The name of an element or attribute, not including any namespace prefix.
• namespaceURI
  The namespace URI of an element or attribute node.
• nextSibling
  The node immediately after this node.
• nodeName
  The name of this node, according to its type.
• nodeType
  A numeric code that represents the type of this node.
• nodeValue
  The value if this node, if it has one.
• normalize
  Puts this node's sub-tree in a state whereby only structural nodes separate text nodes.
• ownerDocument
  The document which contains this node.
• parentNode
  The parent of this node.
• prefix
  The namespace prefix of this node.
• previousSibling
  The node immediately before this node.
• removeChild
  Removes a specified node from the children of this node.
• replaceChild
  Replace an existing child of this node with a new child node.

Element (W3C DOM Core object)

SPECVersionDepr.ParentDOM1NONODE

Example

<p>  <q>Don't be too proud of this technological terror you've constructed.  The ability to destroy a planet is <strong>insignificant</strong>  next to the power of The Force.</q></p>

In the example above, the <p>, <q> and <strong> are all Element nodes.

Description

The Element interface inherits from Node, and represents a single element in an HTML or XML document.

An Element node may have other Element, Text, Comment, ProcessingInstruction,CDATASection or EntityReference nodes as children.

In this Section

• getAttribute
  Get the value of an attribute with the specified name.
• getAttributeNode
  Get an attribute node with the specified name.
• getAttributeNodeNS
  Get the value of an attribute with the specified name and namespace URI.
• getAttributeNS
  Get the value of an attribute with the specified name and namespace URI.
• getElementsByTagName
  Retrieves an ordered list of all elements with a given tag name, that are descendants of this document or element, in the linear order in which they appear in the DOM tree.
• getElementsByTagNameNS
  Retrieves an ordered list of all elements with a given localName and namespaceURI, that are descendants of this document or element, in the linear order in which they appear in the DOM tree.
• hasAttribute
  Whether this element has an attribute with the specified name, or has a specific default value for that attribute in this document type.
• hasAttributeNS
  Whether this element has an attribute with the specified local name and namespace URI, or has a specific default value for that attribute in this document type.
• removeAttribute
  Remove an attribute with the specified name.
• removeAttributeNode
  Remove a specified attribute node.
• removeAttributeNS
  Remove an attribute with the specified name and namespace URI.
• setAttribute
  Set a new attribute on this element, with the specified name and value.
• setAttributeNode
  Add an attribute node to this element.
• setAttributeNodeNS
  Add a namespaced attribute node to this element.
• setAttributeNS
  Set a new attribute on this element, with the specified local name, namespace URI and value.
• tagName
  The qualified name of an element (including any namespace prefix).