#gitbook-plugin-toc This plugin will add table of content to the page and provide navigation function inside a page.

Add <!-- toc --> to the markdown files. When you build the book, it will insert a table of content where you insert <!-- toc -->

book.json Config:

{
	"plugins": ["toc"],
	"pluginsConfig": {
		"toc": {
			"addClass": true,
			"className": "toc",
      "maxDepth": 6
		}
	}
}

You can add this config to add a HTML ClassName to the TOC ul element