Node
는 여러 가지 DOM 타입들이 상속하는 인터페이스이며 그 다양한 타입들을 비슷하게 처리할 수 있게 한다. 예를들어, 똑같은 메소드를 상속하거나 똑같은 방식으로 테스트를 할수있다
다음의 인터페이스들은 모두 Node
로부터 메소드와 프라퍼티를 상속한다: Document
, Element
, CharacterData
(Text
, Comment
, CDATASection
이 상속), ProcessingInstruction
, DocumentFragment
, DocumentType
, Notation
, Entity
, EntityReference
이 인터페이스들은 메소드나 프라퍼티가 적합하지 않은 경우에 null을 반환할 수 있다. 그들은 예외를 발생할 수 있다 - 예를 들어 자식이 있을 수 없는 노드 타입에 자식을 추가할 때 말이다.
프라퍼티 <속성>
부모인 EventTarget
으로부터 프라퍼티를 상속한다.[1]
Node.baseURI
Read only- Returns a
DOMString
representing the base URL. The concept of base URL changes from one language to another; in HTML, it corresponds to the protocol, the domain name and the directory structure, that is all until the last'/'
. Node.baseURIObject
- (Not available to web content.) The read-only
nsIURI
object representing the base URI for the element. Node.childNodes
Read only- Returns a live
NodeList
containing all the children of this node.NodeList
being live means that if the children of theNode
change, theNodeList
object is automatically updated. Node.firstChild
Read only- Returns a
Node
representing the first direct child node of the node, ornull
if the node has no child. Node.lastChild
Read only- Returns a
Node
representing the last direct child node of the node, ornull
if the node has no child. Node.localName
Read only- Returns a
DOMString
representing the local part of the qualified name of an element. In Firefox 3.5 and earlier, the property upper-cases the local name for HTML elements (but not XHTML elements). In later versions, this does not happen, so the property is in lower case for both HTML and XHTML.
Though recent specifications requirelocalName
to be defined on theElement
interface, Gecko-based browsers still implement it on theNode
interface. Node.namespaceURI
Read only- The namespace URI of this node, or
null
if it is no namespace. In Firefox 3.5 and earlier, HTML elements are in no namespace. In later versions, HTML elements are in thehttp://www.w3.org/1999/xhtml
namespace in both HTML and XML trees.
Though recent specifications requirenamespaceURI
to be defined on theElement
interface, Gecko-based browsers still implement it on theNode
interface. Node.nextSibling
Read only- Returns a
Node
representing the next node in the tree, ornull
if there isn't such node. Node.nodeName
Read only- Returns a
DOMString
containing the name of theNode
. The structure of the name will differ with the name type. E.g. AnHTMLElement
will contain the name of the corresponding tag, like'audio'
for anHTMLAudioElement
, aText
node will have the'#text'
string, or aDocument
node will have the'#document'
string. Node.nodePrincipal
- A
nsIPrincipal
representing the node principal. Node.nodeType
Read only- Returns an
unsigned short
representing the type of the node. Possible values are:Name Value 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
Node.nodeValue
- Is a
DOMString
representing the value of an object. For mostNode
type, this returnsnull
and any set operation is ignored. For nodes of typeTEXT_NODE
(Text
objects),COMMENT_NODE
(Comment
objects), andPROCESSING_INSTRUCTION_NODE
(ProcessingInstruction
objects), the value corresponds to the text data contained in the object. Node.ownerDocument
Read only- Returns the
Document
that this node belongs to. If no document is associated with it, returnsnull
. Node.parentNode
Read only- Returns a
Node
that is the parent of this node. If there is no such node, like if this node is the top of the tree or if doesn't participate in a tree, this property returnsnull
. Node.parentElement
Read only- Returns an
Element
that is the parent of this node. If the node has no parent, or if that parent is not anElement
, this property returnsnull
. Node.prefix
Read only- Is a
DOMString
representing the namespace prefix of the node, ornull
if no prefix is specified.
Though recent specifications requireprefix
to be defined on theElement
interface, Gecko-based browsers still implement it on theNode
interface. Node.previousSibling
Read only- Returns a
Node
representing the previous node in the tree, ornull
if there isn't such node. Node.textContent
- Is a
DOMString
representing the textual content of an element and all its descendants.
메소드
부모인 EventTarget
으로부터 메소드를 상속한다.[1]
Node.appendChild()
- Insert a
Node
as the last child node of this element. Node.cloneNode()
- Clone a
Node
, and optionally, all of its contents. By default, it clones the content of the node. Node.compareDocumentPosition()
Node.contains()
Node.getFeature()
- ...
Node.getUserData()
- Allows a user to get some
DOMUserData
from the node. Node.hasAttributes()
- Returns a
Boolean
indicating if the element has any attributes, or not. Node.hasChildNodes()
- Returns a
Boolean
indicating if the element has any child nodes, or not. Node.insertBefore()
- Inserts the first
Node
given in a parameter immediately before the second, child of this element,Node
. Node.isDefaultNamespace()
Node.isEqualNode()
Node.isSameNode()
Node.isSupported()
- Returns a
Boolean
flag containing the result of a test whether the DOM implementation implements a specific feature and this feature is supported by the specific node. Node.lookupPrefix()
Node.lookupNamespaceURI()
Node.normalize()
- Clean up all the text nodes under this element (merge adjacent, remove empty).
Node.removeChild()
- Removes a child node from the current element, which must be a child of the current node.
Node.replaceChild()
- Replaces one child
Node
of the current one with the second one given in parameter. Node.setUserData()
- Allows a user to attach, or remove,
DOMUserData
to the node.
예제
모든 자식 노드 탐색
The following function recursively cycles all child nodes of a node and executes a callback function upon them (and upon the parent node itself).
function DOMComb (oParent, oCallback) {
if (oParent.hasChildNodes()) {
for (var oNode = oParent.firstChild; oNode; oNode = oNode.nextSibling) {
DOMComb(oNode, oCallback);
}
}
oCallback.call(oParent);
}
Syntax
DOMComb(parentNode, callbackFunction);
Description
Recursively cycle all child nodes of parentNode
and parentNode
itself and execute the callbackFunction
upon them as this
objects.
Parameters
Sample usage
The following example send to the console.log
the text content of the body:
function printContent () {
if (this.nodeValue) { console.log(this.nodeValue); }
}
onload = function () {
DOMComb(document.body, printContent);
};
한 노드 안에 중첩된 모든 자식 제거
Element.prototype.removeAll = function () {
while (this.firstChild) { this.removeChild(this.firstChild); }
return this;
};
Sample usage
/* ... an alternative to document.body.innerHTML = "" ... */
document.body.removeAll();
명세
명세 | 상태 | 주석 |
---|---|---|
DOM The definition of 'Node' in that specification. |
Living Standard | Removed the following properties: attributes , namespaceURI , prefix , and localName .Removed the following methods: isSupported() , hasAttributes() , isSameNode() , getFeature() , setUserData() , and getUserData() . |
Document Object Model (DOM) Level 3 Core Specification The definition of 'Node' in that specification. |
Obsolete | The methods insertBefore() , replaceChild() , removeChild() , and appendChild() returns one more kind of error (NOT_SUPPORTED_ERR ) if called on a Document .The normalize() method has been modified so that Text node can also be normalized if the proper DOMConfiguration flag is set.Added the following methods: compareDocumentPosition() , isSameNode() , lookupPrefix() , isDefaultNamespace() , lookupNamespaceURI() , isEqualNode() , getFeature() , setUserData() , and getUserData(). Added the following properties: baseURI and textContent . |
Document Object Model (DOM) Level 2 Core Specification The definition of 'Node' in that specification. |
Obsolete | The ownerDocument property was slightly modified so that DocumentFragment also returns null .Added the following properties: namespaceURI , prefix , and localName .Added the following methods: normalize() , isSupported() and hasAttributes() . |
Document Object Model (DOM) Level 1 Specification The definition of 'Node' in that specification. |
Obsolete | Initial definition. |
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