Using Functions in XPath Expressions

The XPath standard defines functions which can manipulate the content of the source tree in various ways.

This section contains the following topics.

• Introduction to XPath Functions
• Processing Node-Sets by Using Node-Set Functions
• Processing Text Strings by Using String Functions
• Testing an Expression by Using Boolean Functions
• Using Numeric Functions to Perform Math Operations in XPath
• Using Numeric Operators to Perform Math Operations in XPath
• Using XSLT Functions in XPath Expressions
• Sample XML Data File for XPath Functions