hugo/docs/content/en/methods/menu-entry/Params.md

title	description	categories	keywords	action
Params	Returns the `params` property of the given menu entry.			related returnType signatures maps.Params MENUENTRY.Params

When you define menu entries in site configuration or in front matter, you can include a params key to attach additional information to the entry. For example:

{{< code-toggle file=hugo >}} menus.main name = 'About' pageRef = '/about' weight = 10

menus.main name = 'Contact' pageRef = '/contact' weight = 20

menus.main name = 'Hugo' url = 'https://gohugo.io' weight = 30 [menus.main.params] rel = 'external' {{< /code-toggle >}}

With this template:

<ul>
  {{ range .Site.Menus.main }}
    <li>
      <a href="{{ .URL }}" {{ with .Params.rel }}rel="{{ . }}"{{ end }}>
        {{ .Name }}
      </a>
    </li>
  {{ end }}
</ul>

Hugo renders:

<ul>
  <li><a href="/about/">About</a></li>
  <li><a href="/contact/">Contact</a></li>
  <li><a href="https://gohugo.io" rel="external">Hugo</a></li>
</ul>

See the menu templates section for more information.