index.md

---

title: <xsl:param>
slug: Web/XSLT/Element/param

---

{{ XsltRef() }}

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

<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.

Defined

XSLT, section 11.

Gecko support

Supported.