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Web Developer Resource Index: XPath

The XML Path Language (XPath) is a method of addressing elements and their attributes in XML documents using a file system or URI-like syntax. It combines this simple syntax with a library of functions for using numbers, strings and boolean expressions.

XPath is designed to be used with XPointer and XSLT for populating transformations between raw XML data and a formatted result. Note that XPath is not an XML language, rather a compact syntax for matching document elements formed from a hierarchical structure similar to the DOM.

A few simple examples:

Note the use of wildcards as a basic regular expression syntax.

Updated: Wednesday, March 22nd, 2006 @ 2:24 AM EST [13]

Data Formats:Markup Languages:XML:XML Languages:XPath {0}(7)

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• 1.XML Path Language (XPath)

  XPath is the result of an effort to provide a common syntax and semantics for functionality shared between XSL Transformations [XSLT] and XPointer. The primary purpose of XPath is to address parts of an XML document. [189]

  ★★★★☆
  URI:http://w3.org/TR/xpath
  Author:
  James Clark
  [3]
  Reviewed:Monday, April 11th, 2005 @ 12:56 PM EST
  by:
  Douglas Clifton
  
  XML Path Language (XPath) specw3cxmlxpathxpointerxslxslt
   

• 2.XPath Checker

  A Mozilla Firefox extension which provides an interactive editor for XPath expressions. Choose "View XPath" from the context menu and it will show the editor. You can edit the expression and it incrementally updates the results. Also supports namespaces. [1676]

  ★★★★☆
  URI:http://addons.mozilla.org/extensions/moreinfo.php?id=1095
  Author:
  Brian Slesinsky
  [1]
  Reviewed:Wednesday, March 22nd, 2006 @ 2:24 AM EST
  by:
  Douglas Clifton
  
  XPath Checker editorsextensionfirefoxgreasemonkeymathmlsvgxmlxpath
   

• 3.XPather

  XPather is a simple Mozilla Firefox extension that integrates both with the browser and its DOM Inspector. Thus, it is very lightweight and cross-platform. It is valuable mainly as a Web/XML application development and hacking tool. [1550]

  ★★★★☆
  URI:http://xpath.alephzarro.com/index
  Author:
  Viktor Zigo
  [1]
  Reviewed:Wednesday, November 9th, 2005 @ 11:53 AM EST
  by:
  Douglas Clifton
  
  XPather extensionfirefoxmozillaxmlxpath
   

• 4.XPath: XML Path Language

  From the inaugural issue of Arbortext's "Standard Deviation From Norm" column, is this introduction and tutorial on the XML Path language (XPath). Explains the tree structure of an XML document and how XPath is used to address any element in the document. [1488]

  ★★★★☆
  URI:http://www.arbortext.com/html/issue_one.html
  Author:
  Arbortext
  [1]
  Reviewed:Sunday, August 14th, 2005 @ 7:27 PM EST
  by:
  Douglas Clifton
  
  XPath: XML Path Language xmlxpath
   

• 5.Document Object Model (DOM) Level 3 XPath Specification

  This specification defines the Document Object Model Level 3 XPath. It provides simple functionalities to access a DOM tree using XPath 1.0. [192]

  ★★★★☆
  URI:http://w3.org/TR/DOM-Level-3-XPath/
  Author:
  Ray Whitmer
  [1]
  Reviewed:Monday, April 11th, 2005 @ 1:41 PM EST
  by:
  Douglas Clifton
  
  Document Object Model (DOM) Level 3 XPath Specification domxpath
   

• 6.Zvon: XPath Tutorial

  XPath is described in the W3C XPath 1.0 standard specification. In this tutorial selected XPath features are demonstrated with examples. [191]

  ★★★★☆
  URI:http://zvon.org/xxl/XPathTutorial/General/examples.html
  Author:
  Miloslav Nic
  [4]
  Reviewed:Monday, April 11th, 2005 @ 1:15 PM EST
  by:
  Douglas Clifton
  
  Zvon: XPath Tutorial xpath
   

• 7.W3Schools: XPath Tutorial

  XPath is a language for finding information in an XML document. XPath is used to navigate through elements and attributes in an XML document. [190]

  ★★★★☆
  URI:http://www.w3schools.com/xpath/xpath_intro.asp
  Author:
  Jan Egil Refsnes
  [5]
  Reviewed:Monday, April 11th, 2005 @ 1:11 PM EST
  by:
  Douglas Clifton
  
  W3Schools: XPath Tutorial xmlxpath
   

Related Categories

Data Formats:Markup Languages:XML:XML Languages:XPointer {0}(5)

Data Formats:Style Sheets:XSLT {0}(18)

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dom editors extension firefox greasemonkey mathml mozilla spec svg w3c xml xpath xpointer xsl xslt

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