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xmldom-qsa

Based on @xmldom/xmldom with some minor enhancements. Add querySelector, querySelectorAll and match method to Document and Element.

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xmldom-qsa

This is based on xmldom with some minor enhancements.

xmldom-qsa add querySelector, querySelectorAll and match method to Document and Element. And you can write some more methods to these elements by add prototype methods to Node.

xmldom is a javascript ponyfill to provide the following APIs that are present in modern browsers to other runtimes:

  • convert an XML string into a DOM tree
    new DOMParser().parseFromString(xml, mimeType) => Document
    
  • create, access and modify a DOM tree
    new DOMImplementation().createDocument(...) => Document
    
  • serialize a DOM tree back into an XML string
    new XMLSerializer().serializeToString(node) => string
    

The target runtimes xmldom supports are currently Node >= v10 (ES5) and Rhino (not tested as part of CI).

When deciding how to fix bugs or implement features, xmldom tries to stay as close as possible to the various related specifications/standards. As indicated by the version starting with 0., this implementation is not feature complete and some implemented features differ from what the specifications describe. Issues and PRs for such differences are always welcome, even when they only provide a failing test case.

This project was forked from it's original source in 2019, more details about that transition can be found in the CHANGELOG.

Usage

Install:

npm install xmldom-qsa

Enhancements:


doc.documentElement.querySelector('.clazz');

var Node = require('xmldom-qsa/dom').Node;
Node.prototype.addAttr = function(x,y) { ... }
doc.documentElement.addAttr('x','y');

Example:

In NodeJS

const { DOMParser } = require('xmldom-qsa')

const doc = new DOMParser().parseFromString(
    '<xml xmlns="a" xmlns:c="./lite">\n' +
        '\t<child>test</child>\n' +
        '\t<child></child>\n' +
        '\t<child/>\n' +
        '</xml>',
    'text/xml'
)
doc.documentElement.setAttribute('x', 'y')
doc.documentElement.setAttributeNS('./lite', 'c:x', 'y2')
console.info(doc)

const nsAttr = doc.documentElement.getAttributeNS('./lite', 'x')
console.info(nsAttr)

Note: in Typescript and ES6(see #316) you can use the import approach, as follows:

import { DOMParser } from 'xmldom-qsa'

API Reference

  • DOMParser:

    parseFromString(xmlsource,mimeType)
    
    • options extension by xmldom (not DOM standard!!)
    //added the options argument
    new DOMParser(options)
    
    //errorHandler is supported
    new DOMParser({
    	/**
    	 * locator is always need for error position info
    	 */
    	locator:{},
    	/**
    	 * you can override the errorHandler for xml parser
    	 * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
    	 */
    	errorHandler:{warning:function(w){console.warn(w)},error:callback,fatalError:callback}
    	//only callback model
    	//errorHandler:function(level,msg){console.log(level,msg)}
    })
    
    
  • XMLSerializer

    serializeToString(node)
    

DOM level2 method and attribute:

  • Node

    readonly class properties (aka NodeType), these can be accessed from any Node instance node: if (node.nodeType === node.ELEMENT_NODE) {...

    1. ELEMENT_NODE (1)
    2. ATTRIBUTE_NODE (2)
    3. TEXT_NODE (3)
    4. CDATA_SECTION_NODE (4)
    5. ENTITY_REFERENCE_NODE (5)
    6. ENTITY_NODE (6)
    7. PROCESSING_INSTRUCTION_NODE (7)
    8. COMMENT_NODE (8)
    9. DOCUMENT_NODE (9)
    10. DOCUMENT_TYPE_NODE (10)
    11. DOCUMENT_FRAGMENT_NODE (11)
    12. NOTATION_NODE (12)

    attribute:

    • nodeValue | prefix

    readonly attribute:

    • nodeName | nodeType | parentNode | childNodes | firstChild | lastChild | previousSibling | nextSibling | attributes | ownerDocument | namespaceURI | localName

    method:

    • insertBefore(newChild, refChild)
    • replaceChild(newChild, oldChild)
    • removeChild(oldChild)
    • appendChild(newChild)
    • hasChildNodes()
    • cloneNode(deep)
    • normalize()
    • isSupported(feature, version)
    • hasAttributes()
  • DOMException

    extends the Error type thrown as part of DOM API.

    readonly class properties:

    • INDEX_SIZE_ERR (1)
    • DOMSTRING_SIZE_ERR (2)
    • HIERARCHY_REQUEST_ERR (3)
    • WRONG_DOCUMENT_ERR (4)
    • INVALID_CHARACTER_ERR (5)
    • NO_DATA_ALLOWED_ERR (6)
    • NO_MODIFICATION_ALLOWED_ERR (7)
    • NOT_FOUND_ERR (8)
    • NOT_SUPPORTED_ERR (9)
    • INUSE_ATTRIBUTE_ERR (10)
    • INVALID_STATE_ERR (11)
    • SYNTAX_ERR (12)
    • INVALID_MODIFICATION_ERR (13)
    • NAMESPACE_ERR (14)
    • INVALID_ACCESS_ERR (15)

    attributes:

    • code with a value matching one of the above constants.
  • DOMImplementation

    method:

    • hasFeature(feature, version)
    • createDocumentType(qualifiedName, publicId, systemId)
    • createDocument(namespaceURI, qualifiedName, doctype)
  • Document : Node

    readonly attribute:

    • doctype | implementation | documentElement

    method:

    • createElement(tagName)
    • createDocumentFragment()
    • createTextNode(data)
    • createComment(data)
    • createCDATASection(data)
    • createProcessingInstruction(target, data)
    • createAttribute(name)
    • createEntityReference(name)
    • getElementsByTagName(tagname)
    • importNode(importedNode, deep)
    • createElementNS(namespaceURI, qualifiedName)
    • createAttributeNS(namespaceURI, qualifiedName)
    • getElementsByTagNameNS(namespaceURI, localName)
    • getElementById(elementId)
  • DocumentFragment : Node

  • Element : Node

    readonly attribute:

    • tagName

    method:

    • getAttribute(name)
    • setAttribute(name, value)
    • removeAttribute(name)
    • getAttributeNode(name)
    • setAttributeNode(newAttr)
    • removeAttributeNode(oldAttr)
    • getElementsByTagName(name)
    • getAttributeNS(namespaceURI, localName)
    • setAttributeNS(namespaceURI, qualifiedName, value)
    • removeAttributeNS(namespaceURI, localName)
    • getAttributeNodeNS(namespaceURI, localName)
    • setAttributeNodeNS(newAttr)
    • getElementsByTagNameNS(namespaceURI, localName)
    • hasAttribute(name)
    • hasAttributeNS(namespaceURI, localName)
  • Attr : Node

    attribute:

    • value

    readonly attribute:

    • name | specified | ownerElement
  • NodeList

    readonly attribute:

    • length

    method:

    • item(index)
  • NamedNodeMap

    readonly attribute:

    • length

    method:

    • getNamedItem(name)
    • setNamedItem(arg)
    • removeNamedItem(name)
    • item(index)
    • getNamedItemNS(namespaceURI, localName)
    • setNamedItemNS(arg)
    • removeNamedItemNS(namespaceURI, localName)
  • CharacterData : Node

    method:

    • substringData(offset, count)
    • appendData(arg)
    • insertData(offset, arg)
    • deleteData(offset, count)
    • replaceData(offset, count, arg)
  • Text : CharacterData

    method:

    • splitText(offset)
  • CDATASection

  • Comment : CharacterData

  • DocumentType

    readonly attribute:

    • name | entities | notations | publicId | systemId | internalSubset
  • Notation : Node

    readonly attribute:

    • publicId | systemId
  • Entity : Node

    readonly attribute:

    • publicId | systemId | notationName
  • EntityReference : Node

  • ProcessingInstruction : Node

    attribute:

    • data readonly attribute:
    • target

DOM level 3 support:

  • Node

    attribute:

    • textContent

    method:

    • isDefaultNamespace(namespaceURI)
    • lookupNamespaceURI(prefix)

DOM extension by xmldom

  • [Node] Source position extension;

    attribute:

    • lineNumber //number starting from 1
    • columnNumber //number starting from 1

Specs

The implementation is based on several specifications:

Overview of related specifications and their relations

DOM Parsing and Serialization

From the W3C DOM Parsing and Serialization (WD 2016) xmldom provides an implementation for the interfaces:

  • DOMParser
  • XMLSerializer

Note that there are some known deviations between this implementation and the W3 specifications.

Note: The latest version of this spec has the status "Editors Draft", since it is under active development. One major change is that the definition of the DOMParser interface has been moved to the HTML spec

DOM

The original author claims that xmldom implements [DOM Level 2] in a "fully compatible" way and some parts of [DOM Level 3], but there are not enough tests to prove this. Both Specifications are now superseded by the [DOM Level 4 aka Living standard] wich has a much broader scope than xmldom.

xmldom implements the following interfaces (most constructors are currently not exposed):

  • Attr
  • CDATASection
  • CharacterData
  • Comment
  • Document
  • DocumentFragment
  • DocumentType
  • DOMException (constructor exposed)
  • DOMImplementation (constructor exposed)
  • Element
  • Entity
  • EntityReference
  • LiveNodeList
  • NamedNodeMap
  • Node (constructor exposed)
  • NodeList
  • Notation
  • ProcessingInstruction
  • Text

more details are available in the (incomplete) API Reference section.

HTML

xmldom does not have any goal of supporting the full spec, but it has some capability to parse, report and serialize things differently when "detecting HTML" (by checking the default namespace). There is an upcoming change to better align the implementation with the latest specs, related to https://github.com/xmldom/xmldom/issues/203.

SAX, XML, XMLNS

xmldom has an own SAX parser implementation to do the actual parsing, which implements some interfaces in alignment with the Java interfaces SAX defines:

  • XMLReader
  • DOMHandler

There is an idea/proposal to make it possible to replace it with something else in https://github.com/xmldom/xmldom/issues/55

Keywords

FAQs

Package last updated on 30 Apr 2023

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