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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:

/ the root node // all nodes (careful!) /*/* all children of the root node /name node named "name" name[1] the first child of the "name" node @ selects an attribute .. the parent node . the current node

Note the use of classic shell wildcard characters (*) as a simple form of regular expression syntax.

Updated: Wednesday, October 29th, 2008 @ 1:53 AM EDT

Data Formats:Markup Languages:XML:XML Languages:XPath {0}(7)[13]

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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://www.w3.org/TR/xpath
Author:
James Clark
[3]
Reviewed:Monday, April 11th, 2005 @ 1:56 PM EDT
by:
Douglas Clifton

XML Path Language (XPath) spec w3c xml xpath xpointer xsl xslt
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 editors extension firefox greasemonkey mathml svg xml xpath
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 extension firefox mozilla xml xpath
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 @ 8:27 PM EDT
by:
Douglas Clifton

XPath: XML Path Language xml xpath
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://www.w3.org/TR/DOM-Level-3-XPath/
Author:
Ray Whitmer
[1]
Reviewed:Monday, April 11th, 2005 @ 2:41 PM EDT
by:
Douglas Clifton

Document Object Model (DOM) Level 3 XPath Specification dom xpath
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 @ 2:15 PM EDT
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 @ 2:11 PM EDT
by:
Douglas Clifton

W3Schools: XPath Tutorial xml xpath