SAXONICA

Saxon Documentation
Full Contents
About Saxon
Changes in this Release
Conditions of Use
Using XSLT 2.0
Using XQuery
Handling Source Documents
XML Schema Processing
The XPath API
Standards Conformance
Extensibility
Saxon Extensions
Sample Saxon Applications
The Saxon SQL Extension
XSLT Elements
| Introduction
| xsl:analyze-string
| xsl:apply-imports
| xsl:apply-templates
| xsl:attribute
| xsl:attribute-set
| xsl:call-template
| xsl:character-map
| xsl:choose
| xsl:comment
| xsl:copy
| xsl:copy-of
| xsl:decimal-format
| xsl:document
| xsl:element
| xsl:fallback
| xsl:for-each
| xsl:for-each-group
| xsl:function
» | xsl:if
| xsl:include
| xsl:import
| xsl:import-schema
| xsl:key
| xsl:matching-substring
| xsl:message
| xsl:namespace
| xsl:namespace-alias
| xsl:next-match
| xsl:non-matching-substring
| xsl:number
| xsl:otherwise
| xsl:output
| xsl:output-character
| xsl:param
| xsl:perform-sort
| xsl:preserve-space
| xsl:processing-instruction
| xsl:result-document
| xsl:sequence
| xsl:sort
| xsl:strip-space
| xsl:stylesheet
| xsl:template
| xsl:text
| xsl:value-of
| xsl:variable
| xsl:when
| xsl:with-param
| Literal Result Elements
XPath 2.0 Expression Syntax
Function Library
XSLT Patterns

# xsl:if

The `xsl:if` element is used for conditional processing. It takes a mandatory `test` attribute, whose value is a boolean expression. The contents of the xsl:if element are expanded only of the expression is true.

The full syntax of boolean expressions is outlined in XPath Expression Syntax.

Example:

    <xsl:if test="@preface">
            <a href="preface.html">Preface</a>
    </xsl:if>

This includes a hyperlink in the output only if the current element has a `preface` attribute.

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