Quarto Revealjs演示文稿目录重复：如何排除二级标题？

方法1：排除指定二级标题出现在目录 #

给不需要显示在TOC中的二级标题添加{.unlisted}属性，幻灯片仍会正常显示标题，但该条目不会被收录到目录里。

修改后的示例代码：

---
title: "Presentation"
format: 
  revealjs:
    toc: true
    slide-number: true
editor: visual
---

## Quarto

Quarto enables you to weave together content and executable code into a finished presentation. To learn more about Quarto presentations see <https://quarto.org/docs/presentations/>.

## Quarto {.unlisted}

When you click the **Render** button a document will be generated that includes:

-   Content authored with markdown
-   Output from executable code

## Quarto {.unlisted}

When you click the **Render** button a presentation will be generated that includes both content and the output of embedded code. You can embed code like this:

```{r}
1 + 1

## 方法2：创建无标题幻灯片
如果不需要幻灯片顶部显示标题，直接用水平分割线`---`创建新幻灯片即可，这类幻灯片不会被TOC收录，从根源避免重复条目。

修改后的示例代码：
```yaml
---
title: "Presentation"
format: 
  revealjs:
    toc: true
    slide-number: true
editor: visual
---

## Quarto

Quarto enables you to weave together content and executable code into a finished presentation. To learn more about Quarto presentations see <https://quarto.org/docs/presentations/>.

---

When you click the **Render** button a document will be generated that includes:

-   Content authored with markdown
-   Output from executable code

---

When you click the **Render** button a presentation will be generated that includes both content and the output of embedded code. You can embed code like this:

```{r}
1 + 1

### 补充说明
你遇到的TOC重复条目问题，是因为每个`##`开头的二级标题默认都会被收录到目录中，多个相同标题自然会重复显示。上面两种方法都可以解决这个问题，选择哪种取决于你是否需要保留幻灯片的标题显示。

内容的提问来源于stack exchange，提问作者Marco