From 218934fa2ed1c702a6d3923d2aa2cc6b43c48684 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:43:23 -0500 Subject: initial commit --- files/zh-tw/web/api/node/index.html | 529 ++++++++++++++++++++++++++++++++++++ 1 file changed, 529 insertions(+) create mode 100644 files/zh-tw/web/api/node/index.html (limited to 'files/zh-tw/web/api/node/index.html') diff --git a/files/zh-tw/web/api/node/index.html b/files/zh-tw/web/api/node/index.html new file mode 100644 index 0000000000..fc04145fce --- /dev/null +++ b/files/zh-tw/web/api/node/index.html @@ -0,0 +1,529 @@ +--- +title: Node +slug: Web/API/Node +tags: + - API + - DOM + - DOM Reference + - Interface + - NeedsTranslation + - Node + - Reference + - TopicStub +translation_of: Web/API/Node +--- +
{{APIRef("DOM")}}
+ +

Node 是一個被多種 DOM 類型繼承的介面，它讓各種類型的 DOM 都能以同樣的方式來操作。如繼承了相同的方法，或能以相同的方式測試。

+ +

Node 繼承自 {{domxref("EventTarget")}}，而繼承了 Node 的屬性及方法的介面則有：{{domxref("Document")}}、{{domxref("Element")}}、{{domxref("CharacterData")}}（被 {{domxref("Text")}}、{{domxref("Comment")}} 以及 {{domxref("CDATASection")}} 所繼承）、{{domxref("ProcessingInstruction")}}、{{domxref("DocumentFragment")}}、{{domxref("DocumentType")}}、{{domxref("Notation")}}、{{domxref("Entity")}}、{{domxref("EntityReference")}}。

+ +

These interfaces may return null in particular cases where the methods and properties are not relevant. They may throw an exception - for example when adding children to a node type for which no children can exist.

+ +

{{InheritanceDiagram}}

+ +

屬性

+ +

Inherits properties from its parents {{domxref("EventTarget")}}.[1]

+ +
+
{{domxref("Node.baseURI")}} {{readonlyInline}}
+
Returns a {{domxref("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 '/'.
+
{{domxref("Node.baseURIObject")}} {{Non-standard_inline()}} {{ Fx_minversion_inline("3") }}
+
(Not available to web content.) The read-only {{ Interface("nsIURI") }} object representing the base URI for the element.
+
{{domxref("Node.childNodes")}} {{readonlyInline}}
+
Returns a live {{domxref("NodeList")}} containing all the children of this node. {{domxref("NodeList")}} being live means that if the children of the Node change, the {{domxref("NodeList")}} object is automatically updated.
+
{{domxref("Node.firstChild")}} {{readonlyInline}}
+
Returns a {{domxref("Node")}} representing the first direct child node of the node, or null if the node has no child.
+
{{domxref("Node.lastChild")}} {{readonlyInline}}
+
Returns a {{domxref("Node")}} representing the last direct child node of the node, or null if the node has no child.
+
{{domxref("Node.nextSibling")}} {{readonlyInline}}
+
Returns a {{domxref("Node")}} representing the next node in the tree, or null if there isn't such node.
+
{{domxref("Node.nodeName")}} {{readonlyInline}}
+
Returns a {{domxref("DOMString")}} containing the name of the Node. The structure of the name will differ with the node type. E.g. An {{domxref("HTMLElement")}} will contain the name of the corresponding tag, like 'audio' for an {{domxref("HTMLAudioElement")}}, a {{domxref("Text")}} node will have the '#text' string, or a {{domxref("Document")}} node will have the '#document' string.
+
{{domxref("Node.nodePrincipal")}} {{Non-standard_inline()}}{{ Fx_minversion_inline("3") }}
+
A {{ Interface("nsIPrincipal") }} representing the node principal.
+
{{domxref("Node.nodeType")}}{{readonlyInline}}
+
Returns an unsigned short representing the type of the node. Possible values are: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
NameValue
ELEMENT_NODE1
ATTRIBUTE_NODE {{deprecated_inline()}}2
TEXT_NODE3
CDATA_SECTION_NODE {{deprecated_inline()}}4
ENTITY_REFERENCE_NODE {{deprecated_inline()}}5
ENTITY_NODE {{deprecated_inline()}}6
PROCESSING_INSTRUCTION_NODE7
COMMENT_NODE8
DOCUMENT_NODE9
DOCUMENT_TYPE_NODE10
DOCUMENT_FRAGMENT_NODE11
NOTATION_NODE {{deprecated_inline()}}12
+
+
{{domxref("Node.nodeValue")}}
+
Returns / Sets the value of the current node
+
{{domxref("Node.ownerDocument")}} {{readonlyInline}}
+
Returns the {{domxref("Document")}} that this node belongs to. If no document is associated with it, returns null.
+
{{domxref("Node.parentNode")}} {{readonlyInline}}
+
Returns a {{domxref("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 returns null.
+
{{domxref("Node.parentElement")}} {{readonlyInline}}
+
Returns an {{domxref("Element")}} that is the parent of this node. If the node has no parent, or if that parent is not an {{domxref("Element")}}, this property returns null.
+
{{domxref("Node.previousSibling")}} {{readonlyInline}}
+
Returns a {{domxref("Node")}} representing the previous node in the tree, or null if there isn't such node.
+
{{domxref("Node.textContent")}}
+
Returns / Sets the textual content of an element and all its descendants.
+
+ +

Deprecated properties

+ +
+
{{domxref("Node.rootNode")}} {{readOnlyInline}} {{deprecated_inline}}
+
Returns a {{domxref("Node")}} object representing the topmost node in the tree, or the current node if it's the topmost node in the tree. This has been replaced by {{domxref("Node.getRootNode()")}}.
+
+ +

Obsolete properties

+ +
+
{{domxref("Node.localName")}} {{obsolete_inline}}{{readonlyInline}}
+
Returns a {{domxref("DOMString")}} representing the local part of the qualified name of an element. +
+

Note: 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. {{gecko_minversion_inline("1.9.2")}}

+
+
+
{{domxref("Node.namespaceURI")}} {{obsolete_inline}}{{readonlyInline}}
+
The namespace URI of this node, or null if it is no namespace. +
+

Note: In Firefox 3.5 and earlier, HTML elements are in no namespace. In later versions, HTML elements are in the https://www.w3.org/1999/xhtml/ namespace in both HTML and XML trees. {{gecko_minversion_inline("1.9.2")}}

+
+
+
{{domxref("Node.prefix")}} {{obsolete_inline}}{{readonlyInline}}
+
Is a {{domxref("DOMString")}} representing the namespace prefix of the node, or null if no prefix is specified.
+
+ +

方法

+ +

Inherits methods from its parent, {{domxref("EventTarget")}}.[1]

+ +
+
{{domxref("Node.appendChild()")}}
+
Adds the specified childNode argument as the last child to the current node.
+ If the argument referenced an existing node on the DOM tree, the node will be detached from its current position and attached at the new position.
+
{{domxref("Node.cloneNode()")}}
+
Clone a {{domxref("Node")}}, and optionally, all of its contents. By default, it clones the content of the node.
+
{{domxref("Node.compareDocumentPosition()")}}
+
Compares the position of the current node against another node in any other document.
+
{{domxref("Node.contains()")}}
+
Returns a {{jsxref("Boolean")}} value indicating whether a node is a descendant of a given node or not.
+
{{domxref("Node.getRootNode()")}}
+
Returns the context object's root which optionally includes the shadow root if it is available.
+
{{domxref("Node.hasChildNodes()")}}
+
Returns a {{jsxref("Boolean")}} indicating if the element has any child nodes, or not.
+
{{domxref("Node.insertBefore()")}}
+
Inserts a {{domxref("Node")}} before the reference node as a child of the current node.
+
{{domxref("Node.isDefaultNamespace()")}}
+
Accepts a namespace URI as an argument and returns a {{jsxref("Boolean")}} with a value of true if the namespace is the default namespace on the given node or false if not.
+
{{domxref("Node.isEqualNode()")}}
+
Returns a {{jsxref("Boolean")}} which indicates whether or not two nodes are of the same type and all their defining data points match.
+
{{domxref("Node.isSameNode()")}}
+
Returns a {{jsxref("Boolean")}} value indicating whether or not the two nodes are the same (that is, they reference the same object).
+
{{domxref("Node.lookupPrefix()")}}
+
Returns a {{domxref("DOMString")}} containing the prefix for a given namespace URI, if present, and null if not. When multiple prefixes are possible, the result is implementation-dependent.
+
{{domxref("Node.lookupNamespaceURI()")}}
+
Accepts a prefix and returns the namespace URI associated with it on the given node if found (and null if not). Supplying null for the prefix will return the default namespace.
+
{{domxref("Node.normalize()")}}
+
Clean up all the text nodes under this element (merge adjacent, remove empty).
+
{{domxref("Node.removeChild()")}}
+
Removes a child node from the current element, which must be a child of the current node.
+
{{domxref("Node.replaceChild()")}}
+
Replaces one child {{domxref("Node")}} of the current one with the second one given in parameter.
+
+ +

Obsolete methods

+ +
+
{{domxref("Node.getFeature()")}} {{obsolete_inline}}
+
x
+
{{domxref("Node.getUserData()")}} {{obsolete_inline}}
+
Allows a user to get some {{domxref("DOMUserData")}} from the node.
+
{{domxref("Node.hasAttributes()")}} {{obsolete_inline}}
+
Returns a {{jsxref("Boolean")}} indicating if the element has any attributes, or not.
+
{{domxref("Node.isSupported()")}} {{obsolete_inline}}
+
Returns a {{jsxref("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.
+
{{domxref("Node.setUserData()")}} {{obsolete_inline}}
+
Allows a user to attach, or remove, {{domxref("DOMUserData")}} to the node.
+
+ +

範例

+ +

Browse all child nodes

+ +

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

+ +
+
parentNode
+
The parent node (Node Object).
+
callbackFunction
+
The callback function (Function).
+
+ +

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);
+};
+ +

Remove all children nested within a node

+ +
Element.prototype.removeAll = function () {
+  while (this.firstChild) { this.removeChild(this.firstChild); }
+  return this;
+};
+ +

Sample usage

+ +
/* ... an alternative to document.body.innerHTML = "" ... */
+document.body.removeAll();
+ +

規範

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('DOM WHATWG', '#interface-node', 'Node')}}{{Spec2('DOM WHATWG')}}Removed the following properties: attributes, namespaceURI, prefix, and localName.
+ Removed the following methods: isSupported(), hasAttributes(), getFeature(), setUserData(), and getUserData().
{{SpecName('DOM3 Core', 'core.html#ID-1950641247', 'Node')}}{{Spec2('DOM3 Core')}}The methods insertBefore(), replaceChild(), removeChild(), and appendChild() returns one more kind of error (NOT_SUPPORTED_ERR) if called on a {{domxref("Document")}}.
+ The normalize() method has been modified so that {{domxref("Text")}} node can also be normalized if the proper {{domxref("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.
{{SpecName('DOM2 Core', 'core.html#ID-1950641247', 'Node')}}{{Spec2('DOM2 Core')}}The ownerDocument property was slightly modified so that {{domxref("DocumentFragment")}} also returns null.
+ Added the following properties: namespaceURI, prefix, and localName.
+ Added the following methods: normalize(), isSupported() and hasAttributes().
{{SpecName('DOM1', 'level-one-core.html#ID-1950641247', 'Node')}}{{Spec2('DOM1')}}Initial definition
+ +

瀏覽器相容性

+ +

{{CompatibilityTable}}

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureChromeEdgeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatVersionUnknown}}[1]{{CompatVersionUnknown}}{{CompatGeckoDesktop("1.0")}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}[1]{{CompatVersionUnknown}}[1]
getFeature(){{obsolete_inline}}{{CompatNo}}{{CompatUnknown}}{{CompatGeckoDesktop("1.0")}}
+ {{CompatNo}}{{CompatGeckoDesktop("7.0")}}		{{CompatUnknown}}{{CompatNo}}{{CompatNo}}
getUserData(), setUserData() and hasAttributes() {{deprecated_inline}}{{CompatNo}}{{CompatUnknown}}{{CompatGeckoDesktop("1.0")}}
+ {{CompatNo}}{{CompatGeckoDesktop("22.0")}}		{{CompatUnknown}}{{CompatNo}}{{CompatNo}}
isSameNode(){{CompatVersionUnknown}}{{CompatUnknown}}{{CompatGeckoDesktop("1.0")}}
+ Removed in {{CompatGeckoDesktop("10")}}
+ Returned in {{CompatGeckoDesktop("48")}}		{{CompatUnknown}}{{CompatNo}}{{CompatNo}}
isSupported() {{obsolete_inline}}{{CompatNo}}{{CompatUnknown}}{{CompatGeckoDesktop("1.0")}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
attributes{{CompatNo}}{{CompatUnknown}}{{CompatGeckoDesktop("1.0")}}
+ {{CompatNo}}{{CompatGeckoDesktop("22.0")}}[2]		{{CompatNo}}{{CompatNo}}{{CompatNo}}
rootNode(){{CompatUnknown}}{{CompatUnknown}}CompatGeckoDesktop(48)}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
namespaceURI, localName, prefix {{obsolete_inline}}{{CompatVersionUnknown}}
+ {{CompatNo}}46.0[3]		{{CompatUnknown}}{{CompatVersionUnknown}}
+ {{CompatNo}}48.0[3]		{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}
getRootNode(), and rootNode deprecated{{CompatChrome(54.0)}}{{CompatUnknown}}{{CompatGeckoDesktop(53)}}{{CompatUnknown}}{{CompatOpera(41)}}{{CompatUnknown}}
+
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidAndroid WebviewEdgeFirefox Mobile (Gecko)IE MobileOpera MobileSafari MobileChrome for Android
Basic support{{CompatUnknown}}{{CompatVersionUnknown}}[1]{{CompatVersionUnknown}}{{CompatGeckoMobile("1.0")}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}[1]{{CompatVersionUnknown}}[1]{{CompatVersionUnknown}}[1]
getFeature(){{obsolete_inline}}{{CompatNo}}{{CompatNo}}{{CompatUnknown}}{{CompatGeckoMobile("1.0")}}
+ {{CompatNo}}{{CompatGeckoDesktop("7.0")}}		{{CompatUnknown}}{{CompatNo}}{{CompatNo}}{{CompatNo}}
getUserData(), setUserData() and hasAttributes() {{deprecated_inline}}{{CompatNo}}{{CompatNo}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatNo}}
isSameNode(){{CompatUnknown}}{{CompatVersionUnknown}}{{CompatUnknown}} +

{{CompatGeckoDesktop("1.0")}}
+ Removed in {{CompatGeckoDesktop("10")}}
+ Returned in {{CompatGeckoDesktop("48")}}

+ 		{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatVersionUnknown}}
isSupported() {{obsolete_inline}}{{CompatUnknown}}{{CompatNo}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatNo}}
attributes{{CompatUnknown}}{{CompatNo}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatNo}}
rootNode(){{CompatUnknown}}{{CompatNo}}{{CompatUnknown}}{{CompatGeckoMobile(48)}}{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatNo}}
namespaceURI, localName, prefix {{obsolete_inline}}{{CompatUnknown}}{{CompatNo}}{{CompatUnknown}}{{CompatVersionUnknown}}
+ {{CompatNo}}48.0[3]		{{CompatUnknown}}{{CompatUnknown}}{{CompatUnknown}}{{CompatNo}}
getRootNode(), and rootNode deprecated{{CompatNo}}{{CompatChrome(54.0)}}{{CompatUnknown}}{{CompatGeckoMobile(53)}}{{CompatUnknown}}{{CompatOperaMobile(41)}}{{CompatUnknown}}{{CompatChrome(54.0)}}
+
+ +

[1] WebKit and old versions of Blink incorrectly do not make Node inherit from {{domxref("EventTarget")}}.

+ +

[2] In Gecko 22.0 {{geckoRelease("22.0")}} the attributes property was moved to {{domxref("Element")}}.

+ +

[3] The properties were moved to the {{domxref("Element")}} and {{domxref("Attr")}} APIs according to the DOM4 standard.

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