XSLTProcessor: setParameter() method

The setParameter() method of the XSLTProcessor interface sets the value of a parameter (<xsl:param>) in the stylesheet imported in the processor.

Syntax

setParameter(namespaceURI, localName, value)

Parameters

• namespaceURI
  • : The namespace associated with the parameter name. A “null” value is treated the same as the empty string ("").
• localName
  • : The name of the parameter in the associated namespace.
• value
  • : The value of the parameter.

    [!NOTE] Firefox supports any kind of parameter. Chrome, Edge and Safari only support string parameters.

Return value

None (undefined).

Examples

Using setParameter()

This example demonstrates how to pass parameters from JavaScript to an XSLT stylesheet using setParameter(), allowing for dynamic modification of the transformation output based on these parameters.

HTML

<div id="result"></div>

JavaScript

const xmlString = `
<items>
  <item>Item 1</item>
  <item>Item 2</item>
  <item>Item 3</item>
</items>
`;

const xsltString = `
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:param name="showItems" select="'yes'"/>
  <xsl:param name="highlightColor" select="'yellow'"/>
  <xsl:template match="/">
    <ul>
      <xsl:if test="$showItems = 'yes'">
        <xsl:for-each select="items/item">
          <li style="background-color: {$highlightColor};">
            <xsl:value-of select="."/>
          </li>
        </xsl:for-each>
      </xsl:if>
    </ul>
  </xsl:template>
</xsl:stylesheet>
`;

const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlString, "application/xml");
const xsltDoc = parser.parseFromString(xsltString, "application/xml");

const xsltProcessor = new XSLTProcessor();
xsltProcessor.importStylesheet(xsltDoc);

xsltProcessor.setParameter(null, "showItems", "yes");
xsltProcessor.setParameter(null, "highlightColor", "lightblue");

// Perform the transformation from XML to HTML
const resultFragment = xsltProcessor.transformToFragment(xmlDoc, document);

// Display the transformed result in the page
document.getElementById("result").appendChild(resultFragment);

Result

Specifications

Browser compatibility

See also

• getParameter()
• removeParameter()
• clearParameters()
• reset()