侧边栏

创建侧边栏可以：

• Group multiple related documents
• Display a sidebar on each of those documents
• Provide paginated navigation, with next/previous button

要在你的 Docusaurus 网站上使用侧边栏，只需两步：

1. Define a file that exports a dictionary of sidebar objects.
2. Pass this object into the @docusaurus/plugin-docs plugin directly or via @docusaurus/preset-classic.

docusaurus.config.js

module.exports = {
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        docs: {
          sidebarPath: require.resolve('./sidebars.js'),
        },
      },
    ],
  ],
};

这个章节是文档侧边栏功能的一个总览。 在接下来的章节中，我们会系统地介绍下列概念：

📄️ 侧边栏项目

We have introduced three types of item types in the example in the previous section autogenerated, which we will explain in detail later.

📄️ 自动生成侧边栏

Docusaurus can create a sidebar automatically from your filesystem structure: each folder creates a sidebar category, and each file creates a doc link.

📄️ 使用多个侧边栏

You can create a sidebar for each set of Markdown files that you want to group together.

Default sidebar

If the sidebarPath is unspecified, Docusaurus automatically generates a sidebar for you, by using the filesystem structure of the docs folder:

sidebars.js

module.exports = {
  mySidebar: [
    {
      type: 'autogenerated',
      dirName: '.', // generate sidebar from the docs folder (or versioned_docs/<version>)
    },
  ],
};

你也可以显式定义你的侧边栏。

Sidebar object

侧边栏简单来说就是由一些类别、文档链接、其他超链接组成的层级结构。

type Sidebar =
  // 普通语法
  | SidebarItem[]
  // 简写语法
  | {[categoryLabel: string]: SidebarItem[]};

举个例子：

sidebars.js

module.exports = {
  mySidebar: [
    {
      type: 'category',
      label: 'Getting Started',
      items: [
        {
          type: 'doc',
          id: 'doc1',
        },
      ],
    },
    {
      type: 'category',
      label: 'Docusaurus',
      items: [
        {
          type: 'doc',
          id: 'doc2',
        },
        {
          type: 'doc',
          id: 'doc3',
        },
      ],
    },
    {
      type: 'link',
      label: 'Learn more',
      href: 'https://example.com',
    },
  ],
};

This is a sidebars file that exports one sidebar, called mySidebar. 它有三个顶层项目：两个类别和一个外部链接。 每个类别内部都有几个文档链接。

A sidebars file can contain multiple sidebar objects, identified by their object keys.

type SidebarsFile = {
  [sidebarID: string]: Sidebar;
};

Theme configuration

Hideable sidebar

By enabling the themeConfig.docs.sidebar.hideable option, you can make the entire sidebar hideable, allowing users to better focus on the content. 这对于中等屏幕大小（如平板）的读者来说格外有用。

docusaurus.config.js

module.exports = {
  themeConfig: {
    docs: {
      sidebar: {
        hideable: true,
      },
    },
  },
};

Auto-collapse sidebar categories

The themeConfig.docs.sidebar.autoCollapseCategories option would collapse all sibling categories when expanding one category. 这能让用户免于打开过多的菜单，帮助他们关注选定的部分。

docusaurus.config.js

module.exports = {
  themeConfig: {
    docs: {
      sidebar: {
        autoCollapseCategories: true,
      },
    },
  },
};

Passing custom props

To pass in custom props to a sidebar item, add the optional customProps object to any of the items. This is useful to apply site customizations by swizzling React components rendering sidebar items.

{
  type: 'doc',
  id: 'doc1',
  customProps: {
    badges: ['new', 'green'],
    featured: true,
  },
};

Sidebar Breadcrumbs

面包屑导航默认会在页面顶端渲染。它用的是当前页面的「侧边栏路径」。

这个行为可以用插件选项禁用：

docusaurus.config.js

module.exports = {
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        docs: {
          breadcrumbs: false,
        },
      },
    ],
  ],
};

Complex sidebars example

来自 Docusaurus 网站的真实例子：

sidebars.js

import type {SidebarsConfig} from '@docusaurus/plugin-content-docs';
const sidebars: SidebarsConfig = {
  docs: [
    'introduction',
    {
      type: 'category',
      label: 'Getting Started',
      link: {
        type: 'generated-index',
      },
      collapsed: false,
      items: [
        'installation',
        'configuration',
        'playground',
        'typescript-support',
      ],
    },
    {
      type: 'category',
      label: 'Guides',
      link: {
        type: 'generated-index',
        title: 'Docusaurus Guides',
        description:
          "Let's learn about the most important Docusaurus concepts!",
        keywords: ['guides'],
        image: '/img/docusaurus.png',
      },
      items: [
        'guides/creating-pages',
        {
          type: 'category',
          label: 'Docs',
          link: {
            type: 'doc',
            id: 'guides/docs/introduction',
          },
          items: [
            'guides/docs/create-doc',
            {
              type: 'category',
              label: 'Sidebar',
              link: {
                type: 'doc',
                id: 'guides/docs/sidebar/index',
              },
              items: [
                'guides/docs/sidebar/items',
                'guides/docs/sidebar/autogenerated',
                'guides/docs/sidebar/multiple-sidebars',
              ],
            },
            'guides/docs/versioning',
            'guides/docs/multi-instance',
          ],
        },
        'blog',
        {
          type: 'category',
          label: 'Markdown Features',
          link: {
            type: 'doc',
            id: 'guides/markdown-features/introduction',
          },
          items: [
            'guides/markdown-features/react',
            'guides/markdown-features/tabs',
            'guides/markdown-features/code-blocks',
            'guides/markdown-features/admonitions',
            'guides/markdown-features/toc',
            'guides/markdown-features/assets',
            'guides/markdown-features/links',
            'guides/markdown-features/plugins',
            'guides/markdown-features/math-equations',
            'guides/markdown-features/diagrams',
            'guides/markdown-features/head-metadata',
          ],
        },
        'styling-layout',
        'swizzling',
        'static-assets',
        'search',
        'browser-support',
        'seo',
        'using-plugins',
        'deployment',
        {
          type: 'category',
          label: 'Internationalization',
          link: {type: 'doc', id: 'i18n/introduction'},
          items: [
            {
              type: 'doc',
              id: 'i18n/tutorial',
              label: 'Tutorial',
            },
            {
              type: 'doc',
              id: 'i18n/git',
              label: 'Using Git',
            },
            {
              type: 'doc',
              id: 'i18n/crowdin',
              label: 'Using Crowdin',
            },
          ],
        },
        'guides/whats-next',
      ],
    },
    {
      type: 'category',
      label: 'Advanced Guides',
      link: {type: 'doc', id: 'advanced/index'},
      items: [
        'advanced/architecture',
        'advanced/plugins',
        'advanced/routing',
        'advanced/ssg',
        'advanced/client',
      ],
    },
    {
      type: 'category',
      label: 'Upgrading',
      link: {
        type: 'doc',
        id: 'migration/index',
      },
      items: [
        'migration/v3',
        {
          type: 'category',
          label: 'To Docusaurus v2',
          items: [
            'migration/v2/migration-overview',
            'migration/v2/migration-automated',
            'migration/v2/migration-manual',
            'migration/v2/migration-versioned-sites',
            'migration/v2/migration-translated-sites',
          ],
        },
      ],
    },
  ],
  api: [
    'cli',
    'docusaurus-core',
    {
      type: 'autogenerated',
      dirName: 'api',
    },
  ],
};
export default sidebars;