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    XPath

    XPath stands for XML Path Language, it uses a non-XML syntax that provides a flexible way of addressing (pointing to) different parts of an XML document. As well as this, it can also be used to test addressed nodes within a document to determine whether they match a pattern or not.

    XPath is mainly used in XSLT, but can also be used as a much more powerful way of navigating through the DOM of any XML based language documents, such as HTML and XUL, instead of relying on the document.getElementById method, the element.childNodes properties, and other DOM Core features.

    XPath uses a path notation (as in URLs) for navigating through the hierarchical structure of an XML document. It uses a non-XML syntax so that it can be used in URIs and XML attribute values.

    Note: Support for XPath varies widely; it's supported reasonably well in Firefox (although there are no plans to improve support further), while other browsers implement it to a lesser extent if at all. If you need a polyfill, you may consider js-xpath or wicked-good-xpath.

    Documentation

    Introduction to using XPath in JavaScript
    Describes a non-XSLT use of XPath.
    XPath:Axes
    List and definition of the axes defined in the XPath specification. Axes are used to describe the relationships between nodes.
    XPath:Functions
    List and description of the core XPath functions and XSLT-specific additions to XPath.
    Transforming XML with XSLT
    XSLT uses XPath to address code segments in a XML document that it wishes to transform.
    Using XPath
    Code snippets and examples of using DOM bindings for XPath.
    What is XSLT?
    This extensive introduction to XSLT and XPath assumes no prior knowledge of the technologies, and guides the reader through background, context, structure, concepts and introductory terminology.
    JXON
    JXON (lossless JavaScript XML Object Notation) is a generic name by which is defined the representation of JavaScript Objects using XML. There are some cases in which the whole content of an XML document must be read from the JavaScript interpreter (like for web-apps languages or settings XML documents, for example). In these cases JXON could represent the most practical way and a valid alternative to XPath.

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    Tools

    XPather
    Feature rich XPath generator, editor, inspector and simple extraction tool (FireFox Add-On).
    FireXPath
    XPath panel that integrates tightly into FireBug, providing an editor and inspector (FireFox Add-On).
    XPath Checker
    An interactive editor for XPath expressions (FireFox Add-On).
    SketchPath
    A Graphical XPath Builder/Debugger(.NET).

     

    Document Tags and Contributors

    Last updated by: Sheppy,