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JavaScript: The Definitive Guide, 5th Edition
book

JavaScript: The Definitive Guide, 5th Edition

by David Flanagan
August 2006
Intermediate to advanced
1018 pages
34h 13m
English
O'Reilly Media, Inc.
Content preview from JavaScript: The Definitive Guide, 5th Edition

Name

XPathExpression.evaluate( ): evaluate a compiled XPath query

Synopsis

XPathResult evaluate(NodecontextNode,
                     short type,
                     XPathResult result)

Arguments

contextNode

The node (or document) against which the query should be evaluated.

type

The desired result type. This argument should be one of the constants defined by XPathResult.

result

An XPathResult object into which the results of the query should be stored, or null to have the evaluate( ) method create and return a new XPathResult object.

Returns

An XPathResult that hold the results of the query. This is either the object passed as the result argument or a newly created XPathResult object if result was null.

Description

This method evaluates the XPathExpression against a specified node or document and returns the results in an XPathResult object. See XPathResult for details on how to extract values from the returned object.

See Also

Document.evaluate( ), Node.selectNodes( ), XPathResult; Chapter 21

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Publisher Resources

ISBN: 0596101996Errata Page