hugo-book-theme/layouts/partials/docs/shared.html

{{/*These templates contains some more complex logic and shared between partials*/}}
{{- define "title" -}}
  {{- if and .File .Pages -}}
    {{ $sections := split (trim .File.Dir "/") "/" }}
    {{ $title := index ($sections | last 1) 0 | humanize | title }}
    {{- default $title .Title -}}
  {{- else if .File -}}
    {{ $title :=  .File | humanize | title }}
    {{- default $title .Title -}}
  {{- end -}}
{{- end -}}

{{- define "hrefhack" -}}
  {{ $attrEq := "$=" }}
  {{ $attrVal := .RelPermalink }}
  {{ if eq .RelPermalink "/" }}
    {{ $attrEq = "=" }}
    {{ $attrVal = .Permalink }}
  {{ end }}

  <style>
  nav ul a[href{{ $attrEq }}"{{ $attrVal }}"] {
      color: {{ default "#004ed0" .Site.Params.BookMenuBundleActiveLinkColor }};
  }
  </style>
{{- end -}}

{{- define "jsmenu" -}}
<script>
(function() {
  var menu = document.querySelector('aside.book-menu nav')
  addEventListener('beforeunload', function(event) {
    localStorage.setItem('menu.scrollTop', menu.scrollTop)
  });

  menu.scrollTop = localStorage.getItem('menu.scrollTop')
})()
</script>
{{- end -}}