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Generate the string value of an XPath expression and add it to the result tree. The XPath expression might consist of a function call, a location path, a literal number, or a string. SLAX-specific operators are permitted. This statement cannot be used at the top-level of a script. It can only appear within a code block. By default, characters such as "<", ">", and "&" are escaped into proper XML as "&lt;", "&gt;", and "&amp;", respectively.

The expr statement is most commonly used to invoke functions that return no results, for conditional variable assignment, and to return text content from a template.



XPath expression to evaluate. The resulting string is added to the result tree.

SLAX Example

XSLT Equivalent

Release Information

Statement introduced in version 1.0 of the SLAX language.