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diff --git a/files/it/web/api/node/index.html b/files/it/web/api/node/index.html deleted file mode 100644 index 7e0112e21c..0000000000 --- a/files/it/web/api/node/index.html +++ /dev/null @@ -1,368 +0,0 @@ ---- -title: Node -slug: Web/API/Node -tags: - - API - - DOM - - DOM Reference - - Interface - - NeedsTranslation - - Node - - Reference - - TopicStub -translation_of: Web/API/Node ---- -<div>{{APIRef("DOM")}}</div> - -<p><span class="seoSummary"><strong><code>Node</code></strong> is an interface from which a number of DOM API object types inherit. It allows those types to be treated similarly; for example, inheriting the same set of methods, or being tested in the same way.</span></p> - -<p>The following interfaces all inherit from <code>Node</code>’s methods and properties: {{domxref("Document")}}, {{domxref("Element")}}, {{domxref("Attr")}}, {{domxref("CharacterData")}} (which {{domxref("Text")}}, {{domxref("Comment")}}, and {{domxref("CDATASection")}} inherit), {{domxref("ProcessingInstruction")}}, {{domxref("DocumentFragment")}}, {{domxref("DocumentType")}}, {{domxref("Notation")}}, {{domxref("Entity")}}, {{domxref("EntityReference")}}</p> - -<p>These interfaces may return <code>null</code> in certain 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.</p> - -<p>{{InheritanceDiagram}}</p> - -<h2 id="Properties">Properties</h2> - -<p><em>Inherits properties from its parents {{domxref("EventTarget")}}</em>.<sup>[1]</sup></p> - -<dl> - <dt>{{domxref("Node.baseURI")}} {{readonlyInline}}</dt> - <dd>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 <code>'/'</code>.</dd> - <dt>{{domxref("Node.baseURIObject")}} {{Non-standard_inline()}}</dt> - <dd>(Not available to web content.) The read-only {{ Interface("nsIURI") }} object representing the base URI for the element.</dd> - <dt>{{domxref("Node.childNodes")}} {{readonlyInline}}</dt> - <dd>Returns a live {{domxref("NodeList")}} containing all the children of this node. {{domxref("NodeList")}} being live means that if the children of the <code>Node</code> change, the {{domxref("NodeList")}} object is automatically updated.</dd> - <dt>{{domxref("Node.firstChild")}} {{readonlyInline}}</dt> - <dd>Returns a {{domxref("Node")}} representing the first direct child node of the node, or <code>null</code> if the node has no child.</dd> - <dt>{{domxref("Node.isConnected")}} {{readonlyInline}}</dt> - <dd>Returns a boolean indicating whether or not the Node is connected (directly or indirectly) to the context object, e.g. the {{domxref("Document")}} object in the case of the normal DOM, or the {{domxref("ShadowRoot")}} in the case of a shadow DOM.</dd> - <dt>{{domxref("Node.lastChild")}} {{readonlyInline}}</dt> - <dd>Returns a {{domxref("Node")}} representing the last direct child node of the node, or <code>null</code> if the node has no child.</dd> - <dt>{{domxref("Node.nextSibling")}} {{readonlyInline}}</dt> - <dd>Returns a {{domxref("Node")}} representing the next node in the tree, or <code>null</code> if there isn't such node.</dd> - <dt>{{domxref("Node.nodeName")}} {{readonlyInline}}</dt> - <dd>Returns a {{domxref("DOMString")}} containing the name of the <code>Node</code>. 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 <code>'audio'</code> for an {{domxref("HTMLAudioElement")}}, a {{domxref("Text")}} node will have the <code>'#text'</code> string, or a {{domxref("Document")}} node will have the <code>'#document'</code> string.</dd> - <dt>{{domxref("Node.nodePrincipal")}} {{Non-standard_inline()}}</dt> - <dd>A {{ Interface("nsIPrincipal") }} representing the node principal.</dd> - <dt>{{domxref("Node.nodeType")}}{{readonlyInline}}</dt> - <dd>Returns an <code>unsigned short</code> representing the type of the node. Possible values are: - <table class="standard-table"> - <tbody> - <tr> - <th scope="col">Name</th> - <th scope="col">Value</th> - </tr> - <tr> - <td><code>ELEMENT_NODE</code></td> - <td><code>1</code></td> - </tr> - <tr> - <td><code>ATTRIBUTE_NODE</code> {{deprecated_inline()}}</td> - <td><code>2</code></td> - </tr> - <tr> - <td><code>TEXT_NODE</code></td> - <td><code>3</code></td> - </tr> - <tr> - <td><code>CDATA_SECTION_NODE</code> {{deprecated_inline()}}</td> - <td><code>4</code></td> - </tr> - <tr> - <td><code>ENTITY_REFERENCE_NODE</code> {{deprecated_inline()}}</td> - <td><code>5</code></td> - </tr> - <tr> - <td><code>ENTITY_NODE</code> {{deprecated_inline()}}</td> - <td><code>6</code></td> - </tr> - <tr> - <td><code>PROCESSING_INSTRUCTION_NODE</code></td> - <td><code>7</code></td> - </tr> - <tr> - <td><code>COMMENT_NODE</code></td> - <td><code>8</code></td> - </tr> - <tr> - <td><code>DOCUMENT_NODE</code></td> - <td><code>9</code></td> - </tr> - <tr> - <td><code>DOCUMENT_TYPE_NODE</code></td> - <td><code>10</code></td> - </tr> - <tr> - <td><code>DOCUMENT_FRAGMENT_NODE</code></td> - <td><code>11</code></td> - </tr> - <tr> - <td><code>NOTATION_NODE</code> {{deprecated_inline()}}</td> - <td><code>12</code></td> - </tr> - </tbody> - </table> - </dd> - <dt>{{domxref("Node.nodeValue")}}</dt> - <dd>Returns / Sets the value of the current node</dd> - <dt>{{domxref("Node.ownerDocument")}} {{readonlyInline}}</dt> - <dd>Returns the {{domxref("Document")}} that this node belongs to. If the node is itself a document, returns <code>null</code>.</dd> - <dt>{{domxref("Node.parentNode")}} {{readonlyInline}}</dt> - <dd>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 <code>null</code>.</dd> - <dt>{{domxref("Node.parentElement")}} {{readonlyInline}}</dt> - <dd>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 <code>null</code>.</dd> - <dt>{{domxref("Node.previousSibling")}} {{readonlyInline}}</dt> - <dd>Returns a {{domxref("Node")}} representing the previous node in the tree, or <code>null</code> if there isn't such node.</dd> - <dt>{{domxref("Node.textContent")}}</dt> - <dd>Returns / Sets the textual content of an element and all its descendants.</dd> -</dl> - -<h3 id="Deprecated_properties">Deprecated properties</h3> - -<dl> - <dt>{{domxref("Node.rootNode")}} {{readOnlyInline}} {{deprecated_inline}}</dt> - <dd>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()")}}.</dd> -</dl> - -<h3 id="Obsolete_properties">Obsolete properties</h3> - -<dl> - <dt>{{domxref("Node.localName")}} {{obsolete_inline}}{{readonlyInline}}</dt> - <dd>Returns a {{domxref("DOMString")}} representing the local part of the qualified name of an element. - <div class="note"> - <p><strong>Note:</strong> 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")}}</p> - </div> - </dd> - <dt>{{domxref("Node.namespaceURI")}} {{obsolete_inline}}{{readonlyInline}}</dt> - <dd>The namespace URI of this node, or <code>null</code> if it is no namespace. - <div class="note"> - <p><strong>Note:</strong> In Firefox 3.5 and earlier, HTML elements are in no namespace. In later versions, HTML elements are in the <code><a class="linkification-ext external" href="https://www.w3.org/1999/xhtml/">http://www.w3.org/1999/xhtml/</a></code> namespace in both HTML and XML trees. {{gecko_minversion_inline("1.9.2")}}</p> - </div> - </dd> - <dt>{{domxref("Node.prefix")}} {{obsolete_inline}}{{readonlyInline}}</dt> - <dd>Is a {{domxref("DOMString")}} representing the namespace prefix of the node, or <code>null</code> if no prefix is specified.</dd> -</dl> - -<h2 id="Methods">Methods</h2> - -<p><em>Inherits methods from its parent, {{domxref("EventTarget")}}</em>.<sup>[1]</sup></p> - -<dl> - <dt>{{domxref("Node.appendChild()")}}</dt> - <dd>Adds the specified childNode argument as the last child to the current node.<br> - 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.</dd> - <dt>{{domxref("Node.cloneNode()")}}</dt> - <dd>Clone a {{domxref("Node")}}, and optionally, all of its contents. By default, it clones the content of the node.</dd> - <dt>{{domxref("Node.compareDocumentPosition()")}}</dt> - <dd>Compares the position of the current node against another node in any other document.</dd> - <dt>{{domxref("Node.contains()")}}</dt> - <dd>Returns a {{jsxref("Boolean")}} value indicating whether a node is a descendant of a given node or not.</dd> - <dt>{{domxref("Node.getRootNode()")}}</dt> - <dd>Returns the context object's root which optionally includes the shadow root if it is available. </dd> - <dt>{{domxref("Node.hasChildNodes()")}}</dt> - <dd>Returns a {{jsxref("Boolean")}} indicating if the element has any child nodes, or not.</dd> - <dt>{{domxref("Node.insertBefore()")}}</dt> - <dd>Inserts a {{domxref("Node")}} before the reference node as a child of a specified parent node.</dd> - <dt>{{domxref("Node.isDefaultNamespace()")}}</dt> - <dd>Accepts a namespace URI as an argument and returns a {{jsxref("Boolean")}} with a value of <code>true</code> if the namespace is the default namespace on the given node or <code>false</code> if not.</dd> - <dt>{{domxref("Node.isEqualNode()")}}</dt> - <dd>Returns a {{jsxref("Boolean")}} which indicates whether or not two nodes are of the same type and all their defining data points match.</dd> - <dt>{{domxref("Node.isSameNode()")}}</dt> - <dd>Returns a {{jsxref("Boolean")}} value indicating whether or not the two nodes are the same (that is, they reference the same object).</dd> - <dt>{{domxref("Node.lookupPrefix()")}}</dt> - <dd>Returns a {{domxref("DOMString")}} containing the prefix for a given namespace URI, if present, and <code>null</code> if not. When multiple prefixes are possible, the result is implementation-dependent.</dd> - <dt>{{domxref("Node.lookupNamespaceURI()")}}</dt> - <dd>Accepts a prefix and returns the namespace URI associated with it on the given node if found (and <code>null</code> if not). Supplying <code>null</code> for the prefix will return the default namespace.</dd> - <dt>{{domxref("Node.normalize()")}}</dt> - <dd>Clean up all the text nodes under this element (merge adjacent, remove empty).</dd> - <dt>{{domxref("Node.removeChild()")}}</dt> - <dd>Removes a child node from the current element, which must be a child of the current node.</dd> - <dt>{{domxref("Node.replaceChild()")}}</dt> - <dd>Replaces one child {{domxref("Node")}} of the current one with the second one given in parameter.</dd> -</dl> - -<h3 id="Obsolete_methods">Obsolete methods</h3> - -<dl> - <dt>{{domxref("Node.getFeature()")}} {{obsolete_inline}}</dt> - <dd> </dd> - <dt>{{domxref("Node.getUserData()")}} {{obsolete_inline}}</dt> - <dd>Allows a user to get some {{domxref("DOMUserData")}} from the node.</dd> - <dt>{{domxref("Node.hasAttributes()")}} {{obsolete_inline}}</dt> - <dd>Returns a {{jsxref("Boolean")}} indicating if the element has any attributes, or not.</dd> - <dt>{{domxref("Node.isSupported()")}} {{obsolete_inline}}</dt> - <dd>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.</dd> - <dt>{{domxref("Node.setUserData()")}} {{obsolete_inline}}</dt> - <dd>Allows a user to attach, or remove, {{domxref("DOMUserData")}} to the node.</dd> -</dl> - -<h2 id="Examples">Examples</h2> - -<h3 id="Remove_all_children_nested_within_a_node">Remove all children nested within a node</h3> - -<pre class="brush: js">Element.prototype.removeAll = function () { - while (this.firstChild) { this.removeChild(this.firstChild); } - return this; -};</pre> - -<h4 id="Sample_usage">Sample usage</h4> - -<pre class="brush: js">/* ... an alternative to document.body.innerHTML = "" ... */ -document.body.removeAll();</pre> - -<h3 id="Recurse_through_child_nodes">Recurse through child nodes</h3> - -<p>The following function calls a function recursively for each node contained by a root node (including the root itself):</p> - -<pre class="brush: js">function eachNode(rootNode, callback){ - if(!callback){ - var nodes = []; - eachNode(rootNode, function(node){ - nodes.push(node); - }); - return nodes; - } - - if(false === callback(rootNode)) - return false; - - if(rootNode.hasChildNodes()){ - var nodes = rootNode.childNodes; - for(var i = 0, l = nodes.length; i < l; ++i) - if(false === eachNode(nodes[i], callback)) - return; - } -}</pre> - -<h4 id="Syntax">Syntax</h4> - -<pre class="syntaxbox">eachNode(rootNode, callback);</pre> - -<h4 id="Description">Description</h4> - -<p>Recursively calls a function for each descendant node of <code>rootNode</code> (including the root itself).</p> - -<p>If <code>callback</code> is omitted, the function returns an {{jsxref("Array")}} instead, which contains <code>rootNode</code> and all nodes contained therein.</p> - -<p>If <code>callback</code> is provided, and it returns {{jsxref("Boolean")}} <code>false</code> when called, the current recursion level is aborted, and the function resumes execution at the last parent's level. This can be used to abort loops once a node has been found (such as searching for a text node that contains a certain string).</p> - -<h4 id="Parameters">Parameters</h4> - -<dl> - <dt><code>rootNode</code></dt> - <dd>The <code>Node</code> object whose descendants will be recursed through.</dd> - <dt><code>callback</code></dt> - <dd>An optional callback <a href="/en-US/docs/JavaScript/Reference/Global_Objects/Function">function</a> that receives a <code>Node</code> as its only argument. If omitted, <code>eachNode</code> returns an {{jsxref("Array")}} of every node contained within <code>rootNode</code> (including the root itself).</dd> -</dl> - -<h4 id="Sample_usage_2">Sample usage</h4> - -<p>The following example prints the <a href="/en-US/docs/Web/API/Node/textContent"><code>textContent</code></a> properties of each <code><span></code> tag in a <code><div></code> element named <code>"box"</code>:</p> - -<pre class="brush: html"><div id="box"> - <span>Foo</span> - <span>Bar</span> - <span>Baz</span> -</div></pre> - -<pre class="brush: js">var box = document.getElementById("box"); -eachNode(box, function(node){ - if(null != node.textContent){ - console.log(node.textContent); - } -});</pre> - -<p>The following strings will be displayed in the user's console:</p> - -<pre class="brush: js">"\n\t", "Foo", "\n\t", "Bar", "\n\t", "Baz"</pre> - -<div class="note"> -<p><strong>Note:</strong> Whitespace forms part of a {{domxref("Text")}} node, meaning indentation and newlines form separate <code>Text</code> between the <code>Element</code> nodes.</p> -</div> - -<h4 id="Realistic_usage">Realistic usage</h4> - -<p>The following demonstrates a real-world use of the <code>eachNode</code> function: searching for text on a web-page. We use a wrapper function named <code>grep</code> to do the searching:</p> - -<pre class="brush: js">function grep(parentNode, pattern){ - var matches = []; - var endScan = false; - - eachNode(parentNode, function(node){ - if(endScan) - return false; - - // Ignore anything which isn't a text node - if(node.nodeType !== Node.TEXT_NODE) - return; - - if("string" === typeof pattern){ - if(-1 !== node.textContent.indexOf(pattern)) - matches.push(node); - } - else if(pattern.test(node.textContent)){ - if(!pattern.global){ - endScan = true; - matches = node; - } - else matches.push(node); - } - }); - - return matches; -}</pre> - -<p>For example, to find {{domxref("Text")}} nodes that contain typos:</p> - -<pre class="brush: js">var typos = ["teh", "adn", "btu", "adress", "youre", "msitakes"]; -var pattern = new RegExp("\\b(" + typos.join("|") + ")\\b", "gi"); -var mistakes = grep(document.body, pattern); -console.log(mistakes); -</pre> - -<h2 id="Specifications">Specifications</h2> - -<table class="standard-table"> - <thead> - <tr> - <th scope="col">Specification</th> - <th scope="col">Status</th> - <th scope="col">Comment</th> - </tr> - </thead> - <tbody> - <tr> - <td>{{SpecName('DOM WHATWG', '#interface-node', 'Node')}}</td> - <td>{{Spec2('DOM WHATWG')}}</td> - <td>Removed the following properties: <code>attributes</code>, <code>namespaceURI</code>, <code>prefix</code>, and <code>localName</code>.<br> - Removed the following methods: <code>isSupported()</code>, <code>hasAttributes()</code>, <code>getFeature()</code>, <code>setUserData()</code>, and <code>getUserData()</code>.</td> - </tr> - <tr> - <td>{{SpecName('DOM3 Core', 'core.html#ID-1950641247', 'Node')}}</td> - <td>{{Spec2('DOM3 Core')}}</td> - <td>The methods <code>insertBefore()</code>, <code>replaceChild()</code>, <code>removeChild()</code>, and <code>appendChild()</code> returns one more kind of error (<code>NOT_SUPPORTED_ERR</code>) if called on a {{domxref("Document")}}.<br> - The <code>normalize()</code> method has been modified so that {{domxref("Text")}} node can also be normalized if the proper {{domxref("DOMConfiguration")}} flag is set.<br> - Added the following methods: <code>compareDocumentPosition()</code>, <code>isSameNode()</code>, <code>lookupPrefix()</code>, <code>isDefaultNamespace()</code>, <code>lookupNamespaceURI()</code>, <code>isEqualNode()</code>, <code>getFeature()</code>, <code>setUserData()</code>, and <code>getUserData().</code><br> - Added the following properties: <code>baseURI</code> and <code>textContent</code>.</td> - </tr> - <tr> - <td>{{SpecName('DOM2 Core', 'core.html#ID-1950641247', 'Node')}}</td> - <td>{{Spec2('DOM2 Core')}}</td> - <td>The <code>ownerDocument</code> property was slightly modified so that {{domxref("DocumentFragment")}} also returns <code>null</code>.<br> - Added the following properties: <code>namespaceURI</code>, <code>prefix</code>, and <code>localName</code>.<br> - Added the following methods: <code>normalize()</code>, <code>isSupported()</code> and <code>hasAttributes()</code>.</td> - </tr> - <tr> - <td>{{SpecName('DOM1', 'level-one-core.html#ID-1950641247', 'Node')}}</td> - <td>{{Spec2('DOM1')}}</td> - <td>Initial definition</td> - </tr> - </tbody> -</table> - -<h2 id="Browser_compatibility">Browser compatibility</h2> - - - -<p>{{Compat("api.Node")}}</p> |