Navigation Structure

Table of contents

1. Main navigation
2. Ordering pages
3. Excluding pages
4. Pages with children
   1. Child pages
   2. Auto-generating Table of Contents
   3. Children with children
5. Auxiliary Links
6. In-page navigation with Table of Contents
   1. Collapsible Table of Contents

Main navigation

The main navigation for your Just the Docs site is on the left side of the page at large screens and on the top (behind a tap) on small screens. The main navigation can be structured to accommodate a multi-level menu system (pages with children and grandchildren).

By default, all pages will appear as top level pages in the main nav unless a parent page is defined (see Pages with Children).

Ordering pages

To specify a page order, use the nav_order parameter in your pages’ YAML front matter.

Example

---
layout: default
title: Customization
nav_order: 4
---

The specified nav_order parameters on a site should be all integers or all strings. Pages without a nav_order parameter are ordered alphabetically by their title, and appear after the explicitly-ordered pages at each level. By default, all Capital letters are sorted before all lowercase letters; adding nav_sort: case_insensitive in the configuration file ignores case when sorting strings (but also sorts numbers lexicographically: 10 comes before 1).

Excluding pages

For specific pages that you do not wish to include in the main navigation, e.g. a 404 page or a landing page, use the nav_exclude: true parameter in the YAML front matter for that page.

Example

---
layout: default
title: 404
nav_exclude: true
---

Pages with children

Sometimes you will want to create a page with many children (a section). First, it is recommended that you keep pages that are related in a directory together… For example, in these docs, we keep all of the written documentation in the ./docs directory and each of the sections in subdirectories like ./docs/ui-components and ./docs/utilities. This gives us an organization like:

+-- ..
|-- (Jekyll files)
|
|-- docs
|   |-- ui-components
|   |   |-- index.md  (parent page)
|   |   |-- buttons.md
|   |   |-- code.md
|   |   |-- labels.md
|   |   |-- tables.md
|   |   +-- typography.md
|   |
|   |-- utilities
|   |   |-- index.md      (parent page)
|   |   |-- color.md
|   |   |-- layout.md
|   |   |-- responsive-modifiers.md
|   |   +-- typography.md
|   |
|   |-- (other md files, pages with no children)
|   +-- ..
|
|-- (Jekyll files)
+-- ..

On the parent pages, add this YAML front matter parameter:

• has_children: true (tells us that this is a parent page)

Example

---
layout: default
title: UI Components
nav_order: 2
has_children: true
---

Here we’re setting up the UI Components landing page that is available at /docs/ui-components, which has children and is ordered second in the main nav.

Child pages

On child pages, simply set the parent: YAML front matter to whatever the parent’s page title is and set a nav order (this number is now scoped within the section).

Example

---
layout: default
title: Buttons
parent: UI Components
nav_order: 2
---

The Buttons page appears as a child of UI Components and appears second in the UI Components section.

Auto-generating Table of Contents

By default, all pages with children will automatically append a Table of Contents which lists the child pages after the parent page’s content. To disable this auto Table of Contents, set has_toc: false in the parent page’s YAML front matter.

Example

---
layout: default
title: UI Components
nav_order: 2
has_children: true
has_toc: false
---

Children with children

Child pages can also have children (grandchildren). This is achieved by using a similar pattern on the child and grandchild pages.

1. Add the has_children attribute to the child
2. Add the parent and grand_parent attribute to the grandchild

Example

---
layout: default
title: Buttons
parent: UI Components
nav_order: 2
has_children: true
---

---
layout: default
title: Buttons Child Page
parent: Buttons
grand_parent: UI Components
nav_order: 1
---

This would create the following navigation structure:

+-- ..
|
|-- UI Components
|   |-- ..
|   |
|   |-- Buttons
|   |   |-- Button Child Page
|   |
|   |-- ..
|
+-- ..

Auxiliary Links

To add auxiliary links to your site (in the upper right on all pages), add it to the aux_links configuration option in your site’s _config.yml file.

Example

# Aux links for the upper right navigation
aux_links:
  "Just the Docs on GitHub":
    - "//github.com/pmarsceill/just-the-docs"

In-page navigation with Table of Contents

To generate a Table of Contents on your docs pages, you can use the {:toc} method from Kramdown, immediately after an <ol> in Markdown. This will automatically generate an ordered list of anchor links to various sections of the page based on headings and heading levels. There may be occasions where you’re using a heading and you don’t want it to show up in the TOC, so to skip a particular heading use the {: .no_toc } CSS class.

Example

# Navigation Structure
{: .no_toc }

## Table of contents
{: .no_toc .text-delta }

1. TOC
{:toc}

This example skips the page name heading (#) from the TOC, as well as the heading for the Table of Contents itself (##) because it is redundant, followed by the table of contents itself. To get an unordered list, replace 1. TOC above by - TOC.

Collapsible Table of Contents

The Table of Contents can be made collapsible using the <details> and <summary> elements , as in the following example. The attribute open (expands the Table of Contents by default) and the styling with {: .text-delta } are optional.

<details open markdown="block">
  <summary>
    Table of contents
  </summary>
  {: .text-delta }
1. TOC
{:toc}
</details>

The result is shown at the top of this page ({:toc} can be used only once on each page).