XSLTProcessor: removeParameter() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The removeParameter()
method of the XSLTProcessor
interface removes the parameter (<xsl:param>
) and its value from the stylesheet imported in the processor.
Syntax
removeParameter(namespaceURI, localName)
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.
Return value
None (undefined
).
Examples
Using removeParameter()
First, the showItems
parameter is set to "yes"
, which allows the list items to be displayed in the output.
After that, the showItems
parameter is removed using removeParameter()
, and the transformation is performed again, resulting in no items being displayed.
HTML
<div id="result"></div>
JavaScript
const xmlString = `
<items>
<item>Item 1</item>
<item>Item 2</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:template match="/">
<!-- If showItems is 'yes', display the list of items -->
<xsl:if test="$showItems = 'yes'">
<ul>
<xsl:for-each select="items/item">
<li><xsl:value-of select="."/></li>
</xsl:for-each>
</ul>
</xsl:if>
<!-- If showItems is 'no', display a message -->
<xsl:if test="$showItems = 'no'">
<div>No content to show</div>
</xsl:if>
</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);
// Set 'showItems' to 'no' and perform the first transformation
xsltProcessor.setParameter(null, "showItems", "no");
const resultContainer = document.getElementById("result");
let resultFragment = xsltProcessor.transformToFragment(xmlDoc, document);
resultContainer.appendChild(resultFragment);
// Add a horizontal rule to separate the results
resultContainer.appendChild(document.createElement("hr"));
// Remove the 'showItems' parameter, reverting it to the default value ('yes')
xsltProcessor.removeParameter(null, "showItems");
resultFragment = xsltProcessor.transformToFragment(xmlDoc, document);
resultContainer.appendChild(resultFragment);
Result
Specifications
Specification |
---|
DOM Standard # dom-xsltprocessor-removeparameter |
Browser compatibility
BCD tables only load in the browser