{{ define "title" }}XSLT & XPath Function Reference — {{ len .Pages }}+ functions with runnable examples | {{ .Site.Title }}{{ end }}
{{ define "main" }}
<div class="page-header">
  <h1>XSLT &amp; XPath Function Reference</h1>
  <p class="lead">Complete reference for {{ len .Pages }}+ XSLT elements and XPath functions across XSLT 1.0, 2.0 and 3.0. Every entry includes the syntax, a plain-English description, and a runnable example you can open directly in the <a href="https://xsltplayground.com/">online XSLT editor</a> — no install needed.</p>
</div>

{{ $elements := where .Pages "Params.category" "element" }}
{{ $functions := where .Pages "Params.category" "ne" "element" }}
{{ $cats := slice }}
{{ range $functions }}{{ with .Params.category }}{{ $cats = $cats | append . }}{{ end }}{{ end }}
{{ $cats = uniq $cats | sort }}

<nav class="ref-toc" aria-label="Reference categories">
  <strong>Jump to:</strong>
  <a href="#xslt-elements">XSLT Elements ({{ len $elements }})</a>
  {{ range $cats }}
  <a href="#{{ . | urlize }}">{{ strings.FirstUpper . }}s ({{ len (where $functions "Params.category" .) }})</a>
  {{ end }}
</nav>

<div class="content ref-intro">
  <p>Looking for how a specific XSLT instruction or XPath function works? This reference covers the <strong>string, numeric, boolean, date, node, sequence, map, array, JSON and higher-order functions</strong> available in each XSLT version, plus every <strong>XSLT element</strong> from <code>xsl:template</code> to <code>xsl:accumulator</code>. Entries marked <em>XSLT 2.0</em> or <em>XSLT 3.0</em> require a processor such as Saxon — exactly what <a href="https://xsltplayground.com/">XSLT Playground</a> runs, so you can verify behaviour before shipping. Hitting an error code instead? See the <a href="/xslt/errors/">XSLT &amp; Saxon error reference</a>.</p>
</div>

{{ if $elements }}
<section class="ref-section" id="xslt-elements">
  <h2>XSLT Elements</h2>
  <ul class="ref-index-list">
    {{ range $elements }}
    <li>
      <a href="{{ .RelPermalink }}">{{ .Title }}</a>
      {{ with .Params.versionLabel }}<span class="ref-badge ref-badge--sm">{{ . }}</span>{{ end }}
      <span class="muted">{{ .Description | truncate 80 }}</span>
    </li>
    {{ end }}
  </ul>
</section>
{{ end }}

{{ range $cat := $cats }}
<section class="ref-section" id="{{ $cat | urlize }}">
  <h2>{{ strings.FirstUpper $cat }}s</h2>
  <ul class="ref-index-list">
    {{ range where $functions "Params.category" $cat }}
    <li>
      <a href="{{ .RelPermalink }}">{{ .Title }}</a>
      {{ with .Params.versionLabel }}<span class="ref-badge ref-badge--sm">{{ . }}</span>{{ end }}
      <span class="muted">{{ .Description | truncate 80 }}</span>
    </li>
    {{ end }}
  </ul>
</section>
{{ end }}
{{ end }}