blocks|key|3796854|text|rmarkdown+1.15之后|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3796855|已经实现(参见相关issue、PR和NEWS.md)。但是，您应该注意到，这只折叠了代码，而不是输出。您需要添加一些额外的配置，以便在默认情况下隐藏代码，并且不对其进行评估。|offset|length|3796856|---
title:+"Bohemian+Rhapcodey"
output:+
++html_document:
++++code_folding:+hide
---

##+Question+1

Are+you+in+love+with+your+car?

```{r+class.source+=+NULL,+eval+=+FALSE}|code-block|syntax|javascript|3796857|摘要(汽车)|3796858|##+Question+2

Are+you+under+pressure?

```{r+class.source+=+NULL,+eval+=+FALSE}|3796859|绘图(压力)|3796860|3796861|Try+the+knitted+HTML+on+JSFiddle|3796862|rmarkdown+1.15之前的版本|3796863|The+issue+was+closed+on+july+2019+on+GitHub。在html+was+suggested中使用details元素的解决方法。|3796864|在实际实现之前，这可能适用于某些用例。|3796865|---
title:+"Bohemian+Rhapcodey"
output:+html_document
---

##+Question+1

Are+you+in+love+with+your+car?

<details>
++<summary>Toggle+answer</summary>
++```{r+cars}
++summary(cars)|3796866|问题2你有压力吗？|3796867|Try+the+knitted+HTML+on+JSFiddle|3796868|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/rstudio/rmarkdown/issues/664|1|https://github.com/rstudio/rmarkdown/pull/1602|2|https://github.com/rstudio/rmarkdown/blob/master/NEWS.md#rmarkdown-115|3|https://jsfiddle.net/w3cposg4/|4|5|https://github.com/rstudio/rmarkdown/issues/664#issuecomment-422353592|6|https://www.w3schools.com/tags/tag_details.asp|7|https://jsfiddle.net/dbxeunzm/^0|0|9|5|0|F|2|1|I|7|2|0|0|0|0|0|0|0|W|3|0|0|0|17|4|1E|D|5|1U|7|6|0|0|0|0|0|W|7|0^^$0|@$1|2|3|4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1R|8|@]|9|@$D|1S|E|1T|1|1U]|$D|1V|E|1W|1|1X]|$D|1Y|E|1Z|1|20]]|A|$]]|$1|F|3|G|5|H|7|21|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|22|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|23|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|24|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|H|7|25|8|@]|9|@]|A|$I|J]]|$1|R|3|S|5|6|7|26|8|@]|9|@$D|27|E|28|1|29]]|A|$]]|$1|T|3|U|5|6|7|2A|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|2B|8|@]|9|@$D|2C|E|2D|1|2E]|$D|2F|E|2G|1|2H]|$D|2I|E|2J|1|2K]]|A|$]]|$1|X|3|Y|5|6|7|2L|8|@]|9|@]|A|$]]|$1|Z|3|10|5|H|7|2M|8|@]|9|@]|A|$I|J]]|$1|11|3|12|5|6|7|2N|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|2O|8|@]|9|@$D|2P|E|2Q|1|2R]]|A|$]]|$1|15|3|-4|5|6|7|2S|8|@]|9|@]|A|$]]]|16|$17|$5|18|19|1A|A|$1B|1C]]|1D|$5|18|19|1A|A|$1B|1E]]|1F|$5|18|19|1A|A|$1B|1G]]|1H|$5|18|19|1A|A|$1B|1I]]|1J|$5|18|19|1A|A|$1B|1C]]|1K|$5|18|19|1A|A|$1B|1L]]|1M|$5|18|19|1A|A|$1B|1N]]|1O|$5|18|19|1A|A|$1B|1P]]]]

<h2>After rmarkdown 1.15</h2>

<p>This has been implemented (see related <a href="https://github.com/rstudio/rmarkdown/issues/664" rel="nofollow noreferrer">issue</a>, <a href="https://github.com/rstudio/rmarkdown/pull/1602" rel="nofollow noreferrer">PR</a> and <a href="https://github.com/rstudio/rmarkdown/blob/master/NEWS.md#rmarkdown-115" rel="nofollow noreferrer">NEWS.md</a>). However you should note that this folds only the code and not the output. You need to add some extra config to hide the code by default and not evaluate it.</p>

<pre><code>---
title: "Bohemian Rhapcodey"
output: 
  html_document:
    code_folding: hide
---

## Question 1

Are you in love with your car?

```{r class.source = NULL, eval = FALSE}
summary(cars)
```

## Question 2

Are you under pressure?

```{r class.source = NULL, eval = FALSE}
plot(pressure)
```
</code></pre>

<p><a href="https://jsfiddle.net/w3cposg4/" rel="nofollow noreferrer">Try the knitted HTML on JSFiddle</a></p>

<h2>Before rmarkdown 1.15</h2>

<p><a href="https://github.com/rstudio/rmarkdown/issues/664" rel="nofollow noreferrer">The issue was closed on july 2019 on GitHub</a>. A workaround using the <a href="https://www.w3schools.com/tags/tag_details.asp" rel="nofollow noreferrer">details</a> element in html <a href="https://github.com/rstudio/rmarkdown/issues/664#issuecomment-422353592" rel="nofollow noreferrer">was suggested</a>.</p>

<p>This can work for some use cases until it is actually implemented.</p>

<pre><code>---
title: "Bohemian Rhapcodey"
output: html_document
---

## Question 1

Are you in love with your car?

&lt;details&gt;
  &lt;summary&gt;Toggle answer&lt;/summary&gt;
  ```{r cars}
  summary(cars)
  ```
&lt;/details&gt;

## Question 2

Are you under pressure?

&lt;details&gt;
  &lt;summary&gt;Toggle answer&lt;/summary&gt;
  ```{r pressure}
  plot(pressure)
  ```
&lt;/details&gt;
</code></pre>

<p><a href="https://jsfiddle.net/dbxeunzm/" rel="nofollow noreferrer">Try the knitted HTML on JSFiddle</a></p>


blocks|key|609082|text|使用details元素的变通方法工作得很好，但为了提高可发现性，我建议添加一些代码，以便用户在将鼠标悬停在该元素上时看到一个指向的手。这使得元素是交互式的变得更加明显。在7hibault的例子上进行扩展：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|609083|<style+type="text/css">
details:hover+{+cursor:+pointer+}
</style>

---
title:+"Bohemian+Rhapcodey"
output:+html_document
---

##+Question+1

Are+you+in+love+with+your+car?

<details>
++<summary>Toggle+answer</summary>
++```{r+cars}
++summary(cars)|code-block|syntax|javascript|609084|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/3430463/7hibault^0|2|7|2D|8|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

<p>The workaround using the <code>details</code> element works well, but to improve discoverability I would recommend adding some code so that the user sees a pointing hand when s/he hovers over the element. This makes it more obvious that the element is interactive. Expanding on <a href="https://stackoverflow.com/users/3430463/7hibault">7hibault</a>'s example:</p>

<pre><code>&lt;style type="text/css"&gt;
details:hover { cursor: pointer }
&lt;/style&gt;

---
title: "Bohemian Rhapcodey"
output: html_document
---

## Question 1

Are you in love with your car?

&lt;details&gt;
  &lt;summary&gt;Toggle answer&lt;/summary&gt;
  ```{r cars}
  summary(cars)
  ```
&lt;/details&gt;
</code></pre>


blocks|key|601269|text|下面是我在code_folding:+hide和你想要显示选择代码块时所做的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|601270|code-block|syntax|javascript|601271|5*5|601272|```{r}|601273|601274|601275|第一个块(没有{r})只是显示代码，第二个块运行代码|601276|entityMap^0|5|I|0|0|0|0|0|0|7|3|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|G|7|W|8|@]|D|@]|E|$H|I]]|$1|J|3|K|5|6|7|X|8|@]|D|@]|E|$]]|$1|L|3|M|5|G|7|Y|8|@]|D|@]|E|$H|I]]|$1|N|3|K|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|-4|5|G|7|10|8|@]|D|@]|E|$H|I]]|$1|P|3|Q|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|R|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|S|$]]

<p>Here's what I do when <code>code_folding: hide</code> and you want to display select code chunks:</p>

<pre><code>```
5 * 5
```
```{r}
5 * 5 
```
</code></pre>

<p>The first block (without the <code>{r}</code>) simply displays the code, and the second block runs the code</p>


blocks|key|16283|text|使用rmarkdown版本2.3|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|16284|基于7hibaut的答案，但并不完全相同。使用块标头中的选项class.source+=+"fold-show"来显示一个块，当其他块已经被YAML中的code_folding:+hide隐藏时，如rmarkdown+pull+request中所述。|16285|++++---
++++title:+"Bohemian+Rhapsody"
++++output:+
++++++html_document:
++++++code_folding:+hide
++++---

++++##+Question+1

++++Are+you+in+love+with+your+car?

++++```{r+class.source+=+NULL,+eval+=+FALSE}
++++summary(cars)
++++```

++++##+Question+2

++++Are+you+under+pressure?

++++```{r+class.source+=+NULL,+eval+=+FALSE}
++++plot(pressure)
++++```

++++##+Question+3

++++suggested+code

++++```{r+class.source+=+"fold-show",+eval+=+FALSE}
++++library(dplyr)
++++library(magrittr)
+
++++a+<-+dMeasure::dMeasure$new()
++++a$open_emr_db()
++++##+active+patients
++++kensington_clinicians+<-+a$UserConfig+%25>>%25
++++++filter(
++++++++grepl(
++++++++++"Kensington",
++++++++++purrr::map_chr(Location,+function(x)+paste(x,+collapse+=+",+"))
++++++++++#+map_chr+will+create+a+'collapsed'+version+of+all+the
++++++++++#+listed+locations
++++++++)
++++)
++++```|code-block|syntax|javascript|16286|​|16287|📷|atomic|16288|16289|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/rstudio/rmarkdown/pull/1602|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/8ce8fd6a35cb2d1fe42d60ea2a0db9a7.png|imageAlt^0|2|9|0|U|Q|24|I|2R|M|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@$9|1E|A|1F|1|1G]]|E|$]]|$1|H|3|I|5|J|7|1H|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1I|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1J|8|@]|D|@$9|1K|A|1L|1|1M]]|E|$]]|$1|R|3|N|5|6|7|1N|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|11|W|12|E|$13|14|15|-4]]]]

<p>With <code>rmarkdown</code> version 2.3</p>
<p>Based on 7hibaut's answer, but not quite the same. Use the option <code>class.source = &quot;fold-show&quot;</code> in the chunk header to show a chunk, when other chunks have been hidden with the <code>code_folding: hide</code> in the YAML, as described on the <a href="https://github.com/rstudio/rmarkdown/pull/1602" rel="nofollow noreferrer">rmarkdown pull request</a>.</p>
<pre class="lang-r prettyprint-override"><code>    ---
    title: &quot;Bohemian Rhapsody&quot;
    output: 
      html_document:
      code_folding: hide
    ---

    ## Question 1

    Are you in love with your car?

    ```{r class.source = NULL, eval = FALSE}
    summary(cars)
    ```

    ## Question 2

    Are you under pressure?

    ```{r class.source = NULL, eval = FALSE}
    plot(pressure)
    ```

    ## Question 3

    suggested code

    ```{r class.source = &quot;fold-show&quot;, eval = FALSE}
    library(dplyr)
    library(magrittr)
 
    a &lt;- dMeasure::dMeasure$new()
    a$open_emr_db()
    ## active patients
    kensington_clinicians &lt;- a$UserConfig %&gt;&gt;%
      filter(
        grepl(
          &quot;Kensington&quot;,
          purrr::map_chr(Location, function(x) paste(x, collapse = &quot;, &quot;))
          # map_chr will create a 'collapsed' version of all the
          # listed locations
        )
    )
    ```
</code></pre>
<p><a href="https://i.stack.imgur.com/rZ9Vs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rZ9Vs.png" alt="enter image description here" /></a></p>


<p>Is there a way to have code folding available for individual chunks in an R Markdown document, but not others (without <a href="https://stackoverflow.com/questions/37755037/how-to-add-code-folding-to-output-chunks-in-rmarkdown-html-documents">writing customized JavaScript</a>)? </p>

<p>I know I can use the <code>code_folding</code> YAML option, but that applies to the whole document. I'd like to enable it for individual chunks, but not all chunks.</p>

<p>[The reason is for writing a lab that contains instructions that should not be hideable, but with questions that have show/hide solutions.]</p>


Code folding for individual chunks in R Markdown?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有没有一种方法可以让代码折叠在R Markdown文档中的单个块中可用，而不是其他块(没有)？我知道我可以使用code_folding YAML选项，但这适用于整个文档。我想为单个块启用它，但不是所有块。原因是要编写一个实验，其中包含不应该隐藏的说明，但具有显示/隐藏解决方案的问题。

问R Markdown中单个块的代码折叠？
EN

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问R Markdown中单个块的代码折叠？EN