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XML Tutorial

XML HOMEXML IntroductionXML How to useXML TreeXML SyntaxXML ElementsXML AttributesXML NamespacesXML DisplayXML HttpRequestXML ParserXML DOMXML XPathXML XSLTXML XQueryXML XLinkXML ValidatorXML DTDXML SchemaXML ServerXML ExamplesXML QuizXML Certificate

XML AJAX

AJAX IntroductionAJAX XMLHttpAJAX RequestAJAX ResponseAJAX XML FileAJAX PHPAJAX ASPAJAX DatabaseAJAX ApplicationsAJAX Examples

XML DOM

DOM IntroductionDOM NodesDOM AccessingDOM Node InfoDOM Node ListDOM TraversingDOM NavigatingDOM Get ValuesDOM Change NodesDOM Remove NodesDOM Replace NodesDOM Create NodesDOM Add NodesDOM Clone NodesDOM Examples

XPath Tutorial

XPath IntroductionXPath NodesXPath SyntaxXPath AxesXPath OperatorsXPath Examples

XSLT Tutorial

XSLT IntroductionXSL LanguagesXSLT TransformXSLT <template>XSLT <value-of>XSLT <for-each>XSLT <sort>XSLT <if>XSLT <choose>XSLT ApplyXSLT on the ClientXSLT on the ServerXSLT Edit XMLXSLT Examples

XQuery Tutorial

XQuery IntroductionXQuery ExampleXQuery FLWORXQuery HTMLXQuery TermsXQuery SyntaxXQuery AddXQuery SelectXQuery Functions

XML DTD

DTD IntroductionDTD Building BlocksDTD ElementsDTD AttributesDTD Elements vs AttrDTD EntitiesDTD Examples

XSD Schema

XSD IntroductionXSD How ToXSD <schema>XSD ElementsXSD AttributesXSD RestrictionsXSD Complex ElementsXSD EmptyXSD Elements-onlyXSD Text-onlyXSD MixedXSD IndicatorsXSD <any>XSD <anyAttribute>XSD SubstitutionXSD Example

XSD Data Types

XSD StringXSD Date/TimeXSD NumericXSD MiscXSD Reference

Web Services

XML ServicesXML WSDLXML SOAPXML RDFXML RSS

References

DOM Node TypesDOM NodeDOM NodeListDOM NamedNodeMapDOM DocumentDOM ElementDOM AttributeDOM TextDOM CDATADOM CommentDOM XMLHttpRequestDOM ParserXSLT ElementsXSLT/XPath Functions

XPath Tutorial


What is XPath?

XPath is a major element in the XSLT standard.

XPath can be used to navigate through elements and attributes in an XML document.

  • XPath stands for XML Path Language
  • XPath uses "path like" syntax to identify and navigate nodes in an XML document
  • XPath contains over 200 built-in functions
  • XPath is a major element in the XSLT standard
  • XPath is a W3C recommendation

XPath Path Expressions

XPath uses path expressions to select nodes or node-sets in an XML document.

These path expressions look very much like the path expressions you use with traditional computer file systems:


XPath Standard Functions

XPath includes over 200 built-in functions.

There are functions for string values, numeric values, booleans, date and time comparison, node manipulation, sequence manipulation, and much more.

Today XPath expressions can also be used in JavaScript, Java, XML Schema, PHP, Python, C and C++, and lots of other languages.


XPath is Used in XSLT

XPath is a major element in the XSLT standard.

With XPath knowledge you will be able to take great advantage of your XSLT knowledge.


XPath is a W3C Recommendation

XPath 1.0 became a W3C Recommendation on November 16, 1999.

XPath 2.0 became a W3C Recommendation on January 23, 2007.

XPath 3.0 became a W3C Recommendation on April 8, 2014.