toc

This plugin will provide a table-of-contents (TOC) component.

Install

npm i -D @vuepress/plugin-toc@next

Differences with Markdown TOC Syntax

Similar to the Table of Contents Markdown Syntax, the TOC component that provided by this plugin could be used in your markdown content directly:

<!-- markdown toc syntax -->
[[toc]]

<!-- vue toc component -->
<Toc />

Both of them can be pre-rendered correctly in build mode. However, there are some differences between them.

The markdown syntax [[toc]] could only be used in markdown files. It is parsed by markdown-it, and the generated TOC is static content.

The component <Toc/> could be used in both markdown files and vue files. It is loaded by vue, and the generated TOC is a vue component.

This plugin could work together with @vuepress/plugin-active-header-links by setting the headerLinkSelector to match the linkClass option. When the page scroll to a certain header anchor, this corresponding link will be added linkActiveClass class name.

Therefore, this plugin is more useful for theme developers.

Options

componentName

• Type: string

• Default: Toc

• Details:

  Specify the name of the TOC component.

defaultPropsOptions

• Type: Partial<TocPropsOptions>

• Default: {}

• Details:

  Override the default values of the component options prop.

Component Props

The TOC component also accepts props for customization.

<template>
  <Toc :headers="headers" :options="options" />
</template>

headers

• Type: PageHeader[]

interface PageHeader {
  level: number
  title: string
  slug: string
  children: PageHeader[]
}

• Details:

  Specify the headers array to render.

  If this prop is not specified, the headers of current page will be used.

options

• Type: Partial<TocPropsOptions>

interface TocPropsOptions {
  containerTag: string
  containerClass: string
  listClass: string
  itemClass: string
  linkTag: 'a' | 'RouterLink'
  linkClass: string
  linkActiveClass: string
  linkChildrenActiveClass: string
}

• Default:

  Following default values can be overridden by defaultPropsOptions.

const defaultOptions = {
  containerTag: 'nav',
  containerClass: 'vuepress-toc',
  listClass: 'vuepress-toc-list',
  itemClass: 'vuepress-toc-item',
  linkTag: 'RouterLink',
  linkClass: 'vuepress-toc-link',
  linkActiveClass: 'active',
  linkChildrenActiveClass: 'active',
}

• Details:

  Customize the TOC component.

  If the containerTag is set to an empty string '', the <nav> container will be removed totally.

• Example:

  The rendered TOC component with default options looks like:

<template>
  <!-- container -->
  <nav class="vuepress-toc">
    <!-- list -->
    <ul class="vuepress-toc-list">
      <!-- item -->
      <li class="vuepress-toc-item">
        <!-- link -->
        <RouterLink class="vuepress-toc-link" to="#foo">Foo</RouterLink>
      </li>
      <!-- item with children -->
      <li class="vuepress-toc-item">
        <!-- link (children active) -->
        <RouterLink class="vuepress-toc-link active" to="#bar">Bar</RouterLink>
        <!-- list (children) -->
        <ul class="vuepress-toc-list">
          <!-- item -->
          <li class="vuepress-toc-item">
            <!-- link (active) -->
            <RouterLink class="vuepress-toc-link active" to="#bar-child">Bar Child</RouterLink>
          </li>
        </ul>
      </li>
    </ul>
  </nav>
</template>