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files/en-us/web/xml/xslt/reference/element/param/index.md

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The <xsl:param> element establishes a parameter by name and, optionally, a default value for that parameter. When used as a top-level element, the parameter is global. When used inside an <xsl:template> element, the parameter is local to that template. In this case it must be the first child element of the template.

Syntax

xml
<xsl:param name=NAME select=EXPRESSION>
  TEMPLATE
</xsl:param>

Required Attributes

  • name
    • : Names the parameter. This must be a QName.

Optional Attributes

  • select
    • : Uses an XPath expression to provide a default value if none is specified.

Type

Instruction, can appear as a top-level element or within a template.

Specifications

XSLT, section 11.

Gecko support

Supported.