你可以用 script 元素（由我加粗）：

You can do this with the script element (bolded by me):

脚本元素允许作者包含动态脚本和数据块在他们的文件中。

The script element allows authors to include dynamic script and data blocks in their documents.

示例：

<script type="text/plain">
This content has the media type plain/text, so characters reserved in HTML have no special meaning here: <div> ← this will be displayed.
</script>

（请注意脚本的允许内容元素是限制，例如你不能 < / script> 作为文本内容（它将关闭脚本元素）。）

(Note that the allowed content of the script element is restricted, e.g. you can’t have </script> as text content (it would close the script element).)

通常， script 元素在浏览器的CSS中默认为 display：none ，所以你需要在CSS中覆盖它，例如：

Typically, script elements have display:none by default in browser’s CSS, so you’d need to overwrite that in your CSS, e.g.:

script[type="text/plain"] {display:block;}