md-editor-v3-modified

🎄 md-editor-v3

English | 中文

Markdown editor for vue3, developed in jsx and typescript.

• Documentation and example: Go

• Use it online: Go

• The same series editor for react: md-editor-rt

⭐️ Features

• Toolbar, screenfull or screenfull in web pages and so on.
• Themes, Built-in default and dark themes.
• Shortcut key for editor.
• Beautify your content by prettier(only for markdown content, not the code and other text).
• Multi-language, build-in Chinese and English(default: Chinese).
• Upload picture, paste or clip the picture and upload it.
• Render article directly(no editor, no event listener, only preview of content).
• Theme of preview, default, vuepress, github, cyanosis, mk-cute, smart-blue styles(not identical). It can be customized also(Refer to example page).
• mermaid(>=1.8.0), katex mathematical formula(>=1.9.0).
• Customize the toolbar as you like.
• On-demand Import(>=4.0.0).

📦 Install

yarn add md-editor-v3

Use existing extension of language and theme, such as Japanese

yarn add @vavt/cm-extension

Use existing components of toolbar, such as exporting content as PDF

yarn add @vavt/v3-extension

For more ways to use or contribute, please refer to: md-editor-extension

💡 Usage

When using server-side rendering, make sure to set editorId to a constant value.

Starting from 4.0.0, internal components can be imported on-demand.

✍🏻 Display Editor

<template>
  <MdEditor v-model="text" />
</template>

<script setup>
import { ref } from 'vue';
import { MdEditor } from 'md-editor-v3';
import 'md-editor-v3/lib/style.css';

const text = ref('# Hello Editor');
</script>

📖 Preview Only

<template>
  <MdPreview :editorId="id" :modelValue="text" />
  <MdCatalog :editorId="id" :scrollElement="scrollElement" />
</template>

<script setup>
import { ref } from 'vue';
import { MdPreview, MdCatalog } from 'md-editor-v3';
import 'md-editor-v3/lib/preview.css';

const id = 'preview-only';
const text = ref('# Hello Editor');
const scrollElement = document.documentElement;
</script>

When using server-side rendering, scrollElement should be of string type, eg: body, #id, .class.

🗺 Preview

Default theme	Dark theme	Preview only

Inputing prompt and mark, emoji extensions

🎁 Apis

🔖 MdPreivew Props

name	type	default	description
modelValue	string	''	Markdown content, use v-model in vue template
theme	'light' | 'dark'	'light'	Editor theme
class	string	''
style	string | CSSProperties	{}	Inline style
language	string	'zh-CN'	Build-in language('zh-CN','en-US')
editorId	string	'md-editor-v3_[\d]'	Editor's id, default incrementing by number. When using server-side rendering, make sure to set this attribute to a constant value
showCodeRowNumber	boolean	true	Show row number for code block or not
previewTheme	'default' | 'github' | 'vuepress' | 'mk-cute' | 'smart-blue' | 'cyanosis'	'default'	Theme of preview, can be customized
noMermaid	boolean	false	Use mermaid or not
noKatex	boolean	false	Use katex or not
codeTheme	'atom' | 'a11y' | 'github' | 'gradient' | 'kimbie' | 'paraiso' | 'qtcreator' | 'stackoverflow'	'atom'	Highlight code style, can be customized also
mdHeadingId	(text: string, level: number, index: number) => string	(text) => text	H1-H6 ID generator
sanitize	(html: string) => string	(html) => html	This attribute is used to alter the compiled HTML content
noIconfont	boolean	false	Not append iconfont script, you can get the latest link here
formatCopiedText	(text: string) => string	(text: string) => text	Format copied code
codeStyleReverse	boolean	true	Code style will be reversed to dark while code block of the theme has a dark background
codeStyleReverseList	Array<string>	['default', 'mk-cute']	Themes to be reversed
noHighlight	boolean	false	Highlight code or not
noImgZoomIn	boolean	false	Enable the function of enlarging images
customIcon	CustomIcon	{}	Customized icons
sanitizeMermaid	(h: string) => Promise<string>	(h: string) => Promise.resolve(h)	Convert the generated mermaid code
codeFoldable	boolean	true	Whether to enable code folding feature
autoFoldThreshold	number	30	Threshold for triggering automatic code folding by line count

🔩 MdEditor Props

Except for the same as MdPreview:

name	type	default	description
pageFullscreen	boolean	false	Screenfull in web page
preview	boolean	true	Preview content in editor
htmlPreview	boolean	false	Preview html in editor(If true, preview must be false)
toolbars	Array<ToolbarNames | number>	[toolbars]	Show contents of toolbar, all keyssee toolbars below
toolbarsExclude	Array<ToolbarNames | number>	[]	Don't show contents of toolbar, all keystoolbars
noPrettier	boolean	false	Use prettier to beautify content or not
tabWidth	number	2	One tab eq some spaces
tableShape	[number, number] | [number, number, number, number]	[6, 4]	Preset the size of the table, [columns, rows, Maximum number of columns, Maximum number of rows]
placeholder	string	''
footers	Array<'markdownTotal' | '=' | 'scrollSwitch' | number>	['markdownTotal', '=', 'scrollSwitch']	Show contents of footer, they are divided by '='. Set it to [] to hidden footer
scrollAuto	boolean	true	Scroll default setting
noUploadImg	boolean	false	Not show the entrance to upload pictures
autoFocus	boolean	false	same as autofocus in native textarea
disabled	boolean	false	same as disabled in native textarea
readOnly	boolean	false	same as readonly in native textarea
maxLength	number		same as maxlength in native textarea
autoDetectCode	boolean	false	auto detect the type of pasted code, only support that copied from vscode
completions	Array<CompletionSource>	[]	@codemirror/autocomplete List of function to match keywords
showToolbarName	boolean	false	Show toolbar name or not
inputBoxWitdh	string	'50%'	Default width of input box
transformImgUrl	(imgUrl: string) => string | Promise<string>	t => t	Transform image links

『toolbars』

[
  'bold',
  'underline',
  'italic',
  '-',
  'strikeThrough',
  'title',
  'sub',
  'sup',
  'quote',
  'unorderedList',
  'orderedList',
  'task', // ^2.4.0
  '-',
  'codeRow',
  'code',
  'link',
  'image',
  'table',
  'mermaid',
  'katex',
  '-',
  'revoke',
  'next',
  'save',
  '=',
  'pageFullscreen',
  'fullscreen',
  'preview',
  'previewOnly',
  'htmlPreview',
  'catalog',
  'github'
];

You can sort the toolbar as you like, split tools by '-', the left and right toolbars are divided by '='！

You can customize the toolbar. To display them, put index of defToolbars into toolbars(this is not standard), for more usage, please refer to docs.

『StaticTextDefaultValue』

Expand language, you need to replace all the content here:

export interface ToolbarTips {
  bold?: string;
  underline?: string;
  italic?: string;
  strikeThrough?: string;
  title?: string;
  sub?: string;
  sup?: string;
  quote?: string;
  unorderedList?: string;
  orderedList?: string;
  task?: string; // ^2.4.0
  codeRow?: string;
  code?: string;
  link?: string;
  image?: string;
  table?: string;
  mermaid?: string;
  katex?: string;
  revoke?: string;
  next?: string;
  save?: string;
  prettier?: string;
  pageFullscreen?: string;
  fullscreen?: string;
  catalog?: string;
  preview?: string;
  previewOnly?: string;
  htmlPreview?: string;
  github?: string;
  '-'?: string;
  '='?: string;
}

export interface StaticTextDefaultValue {
  // Toolbar hover tips(html title)
  toolbarTips?: ToolbarTips;
  // H1-H6 dropdown menu item
  titleItem?: {
    h1?: string;
    h2?: string;
    h3?: string;
    h4?: string;
    h5?: string;
    h6?: string;
  };
  imgTitleItem?: {
    link: string;
    upload: string;
    clip2upload: string;
  };
  // The modal tips of add link or upload picture
  linkModalTips?: {
    linkTitle?: string;
    imageTitle?: string;
    descLabel?: string;
    descLabelPlaceHolder?: string;
    urlLabel?: string;
    urlLabelPlaceHolder?: string;
    buttonOK?: string;
  };
  // The modal tips of clip the picture, v1.2.0
  clipModalTips?: {
    title?: string;
    buttonUpload?: string;
  };
  copyCode?: {
    text?: string;
    successTips?: string;
    failTips?: string;
  };
  mermaid?: {
    flow?: string;
    sequence?: string;
    gantt?: string;
    class?: string;
    state?: string;
    pie?: string;
    relationship?: string;
    journey?: string;
  };
  katex?: {
    // formula inline
    inline: string;
    // formula block
    block: string;
  };
  footer?: {
    markdownTotal: string;
    scrollAuto: string;
  };
}

🧵 MdPreview Events

name	type	description
onChange	value: string	Content changed(bind to oninput of textarea)
onHtmlChanged	html: string	Compile markdown successful event, you can use it to get the html code
onGetCatalog	list: Array<HeadList>	Get catalog of article

🪢 MdEditor Events

Except for the same as MdPreview:

name	type	description
onSave	value: string, html: Promise<string>	Saving content, ctrl+s and clicking button will trigger it
onUploadImg	files: Array<File>, callback: (urls: string[] | { url: string; alt: string; title: string }[]) => void	Uploading picture, when picture is uploading the modal will not close, please provide right urls to the callback function
onError	err: { name: 'Cropper' | 'fullscreen' | 'prettier' | 'overlength'; message: string }	Catch run-time error, Cropper, fullscreen and prettier are used when they are not loaded. And content exceeds the length limit error
onBlur	event: FocusEvent	Textarea has lost focus
onFocus	event: FocusEvent	Textarea has received focus
onInput	event: Event	Element gets input
onDrop	event: DragEvent	Selection is being dragged
onInputBoxWitdhChange	(width: string) => void	Width of input box has been changed

🎍 Slots

name	type	default	description
defToolbars	Array<DropdownToolbar | NormalToolbar | ModalToolbar>	null	Custom toolbar in DropdownToolbar, NormalToolbar or ModalToolbar
defFooters	Array<string | VNode | JSX.Element>	null	Custom footer

NormalToolbar example:

<template>
  <MdEditor>
    <template #defToolbars>
      <NormalToolbar title="mark" @onClick="handler">
        <template #trigger>
          <svg class="md-editor-icon" aria-hidden="true">
            <use xlink:href="#md-editor-icon-mark"></use>
          </svg>
        </template>
      </NormalToolbar>
    </template>
  </MdEditor>
</template>

<script setup lang="ts">
import { MdEditor, NormalToolbar } from 'md-editor-v3';
import 'md-editor-v3/lib/style.css';

const handler = () => {
  console.log('NormalToolbar clicked!');
};
</script>

🤱🏼 Expose

After 2.5.0, Editor exposes several methods on the instance, used to get or change the internal status of the editor.

<template>
  <MdEditor ref="editorRef" />
</template>

<script setup lang="ts">
import { ref, onMounted } from 'vue';
import { MdEditor } from 'md-editor-v3';
import type { ExposeParam } from 'md-editor-v3';
import 'md-editor-v3/lib/style.css';

const editorRef = ref<ExposeParam>();

onMounted(() => {
  editorRef.value?.on('catalog', console.log);
  editorRef.value?.toggleCatalog(true);
});
</script>

Switched to the opposite status, if toggle without input parameter.

👂🏼 on

Get the internal state of the editor, including pageFullscreen, fullscreen, preview, htmlPreview, catalog, etc.

• pageFullscreen

  editorRef.value?.on('pageFullscreen', (status) => console.log(status));

• fullscreen

  editorRef.value?.on('fullscreen', (status) => console.log(status));

• preview

  editorRef.value?.on('preview', (status) => console.log(status));

• previewOnly

  editorRef.value?.on('previewOnly', (status) => console.log(status));

• htmlPreview

  editorRef.value?.on('htmlPreview', (status) => console.log(status));

• catalog

  editorRef.value?.on('catalog', (status) => console.log(status));

💻 togglePageFullscreen

Toggle status of fullscreen within the page.

editorRef.value?.togglePageFullscreen(true);

🖥 toggleFullscreen

Toggle status of fullscreen widthin browser.

editorRef.value?.toggleFullscreen(true);

📖 togglePreview

Toggle status of preview.

editorRef.value?.togglePreview(true);

📖 togglePreviewOnly

Toggle into Preview Only Mode.

editorRef.value?.togglePreviewOnly(true);

📼 toggleHtmlPreview

Toggle status of htmlPreview.

editorRef.value?.toggleHtmlPreview(true);

🧬 toggleCatalog

Toggle status of catalog.

editorRef.value?.toggleCatalog(true);

💾 triggerSave

editorRef.value?.triggerSave();

💉 insert

Manually insert content into textarea.

/**
 * @params selectedText
 */
editorRef.value?.insert((selectedText) => {
  /**
   * @return targetValue    Content to be inserted
   * @return select         Automatically select content, default: true
   * @return deviationStart Start position of the selected content, default: 0
   * @return deviationEnd   End position of the selected content, default: 0
   */
  return {
    targetValue: `${selectedText}`,
    select: true,
    deviationStart: 0,
    deviationEnd: 0
  };
});

For more examples, refer to source code of extension component

🎯 focus

Focus on textarea.

import type { FocusOption } from 'md-editor-v3';

const option: FocusOption | undefined = 'start';

// Cursor position when focusing on textarea, default: position when it last lost focus
editorRef.value?.focus(option);

✒️ rerender

Re render the content.

editorRef.value?.rerender();

🔍 getSelectedText

Get the currently selected text.

console.log(editorRef.value?.getSelectedText());

🗑 resetHistory

Clear current history.

🎛 domEventHandlers

Supports listening to all DOM events.

editorRef.value?.domEventHandlers({
  compositionstart: () => {
    console.log('compositionstart');
  }
});

🎛 execCommand

Insert content into the editor via trigger.

editorRef.value?.execCommand('bold');

💴 Config Editor

Use config(option: ConfigOption) to reconfigure markdown-it and so on.

[!WARNING]

We recommend configuring it at the project entry point, such as in main.js for projects created with Vite. Avoid calling config within components!

codeMirrorExtensions

Customize new extensions based on theme and default extensions f codeMirror.

Example: Editor does not render the line number of textarea by default, this extension needs to be manually added

import { config } from 'md-editor-v3';
import { lineNumbers } from '@codemirror/view';

config({
  codeMirrorExtensions(_theme, extensions) {
    return [...extensions, lineNumbers()];
  }
});

markdownItConfig

Customize extensions, attributes of markdown-it, etc.

type MarkdownItConfig = (
  md: markdownit,
  options: {
    editorId: string;
  }
) => void;

Example: Use markdown-it-anchor to render a hyperlink symbol to the right of the title

import { config } from 'md-editor-v3';
import ancher from 'markdown-it-anchor';

config({
  markdownItConfig(mdit) {
    mdit.use(ancher, {
      permalink: true
    });
  }
});

markdownItPlugins

Select and add built-in plugins to markdown-it.

type MarkdownItPlugins = (
  plugins: Array<MarkdownItConfigPlugin>,
  options: {
    editorId: string;
  }
) => Array<MarkdownItConfigPlugin>;

Example: Modify the class name of the image.

import { config } from 'md-editor-v3';

config({
  markdownItPlugins(plugins) {
    return plugins.map((p) => {
      if (p.type === 'image') {
        return {
          ...p,
          options: {
            ...p.options,
            classes: 'my-class'
          }
        };
      }

      return p;
    });
  }
});

editorConfig

Add more languages, reset mermaid template or delay rendering time:

import { config } from 'md-editor-v3';

config({
  editorConfig: {
    languageUserDefined: { lang: StaticTextDefaultValue },
    mermaidTemplate: {
      flow: `flow tempalte`,
      ...more
    },
    // Default 500ms. It is set to 0ms when preview only and not set.
    renderDelay: 500,
    // for modal component
    zIndex: 2000
  }
});

editorExtensions

Config some dependency libraries, like highlight..

import { config } from 'md-editor-v3';

config({
  editorExtensions: { iconfont: 'https://xxx.cc' }
});

『EditorExtensions』

export interface EditorExtensions {
  highlight?: {
    instance?: any;
    js?: string;
    css?: {
      [key: string]: {
        light: string;
        dark: string;
      };
    };
  };
  prettier?: {
    standaloneJs?: string;
    parserMarkdownJs?: string;
  };
  cropper?: {
    instance?: any;
    js?: string;
    css?: string;
  };
  iconfont?: string;
  screenfull?: {
    instance?: any;
    js?: string;
  };
  mermaid?: {
    instance?: any;
    js?: string;
  };
  katex?: {
    instance?: any;
    js?: string;
    css?: string;
  };
}

editorExtensionsAttrs

Synchronously add attributes to the CDN link tags, consistent with the type of editorExtensions, with a value type of HTMLElementTagNameMap['tagName'].

import { config, editorExtensionsAttrs } from 'md-editor-v3';

config({
  editorExtensionsAttrs
});

Do not attempt to define the src \ onload \ id of the script and rel \ href \ id of the link in editorExtensionsAttrs, as they will be overwritten by default values

🫨 iconfontType

Set the way to display icons:

• svg: with symbol
• class: with font-class

If the icon is customized through the attribute customIcon, the customized icon will be used first.

🎨 mermaidConfig

Configure mermaid, Details

import { config } from 'md-editor-v3';

config({
  mermaidConfig(base: any) {
    return {
      ...base,
      logLevel: 'error'
    };
  }
});

🪡 Shortcut Key

Pay attention: shortcut keys are only available when the textarea has received focus!

key	function	description
TAB	insert space	Insert space, the length eq tabWidth, default: 2, support multiline
SHIFT + TAB	delete space, setting is the same as Tab
CTRL + C	copy	When selected, copy the selected content. When not selected, copy the content of the current line
CTRL + X	shear	When selected, cut the selected content. When not selected, cut the current line
CTRL + D	delete	When selected, delete the selected content. When not selected, delete the current line
CTRL + S	save	Trigger onSave event
CTRL + B	bold text	**bold**
CTRL + U	underline	<u>underline</u>
CTRL + I	italic	*italic*
CTRL + 1-6	h1-h6	# title
CTRL + ↑	superscript	<sup>superscript</sup>
CTRL + ↓	subscript	<sub>subscript</sub>
CTRL + O	ordered list	1. ordered list
CTRL + L	link	[link](https://github.com/imzbf/md-editor-v3)
CTRL + Z	withdraw	Withdraw history in editor, not the function of system
CTRL + SHIFT + S	line-through	~line-through~
CTRL + SHIFT + U	unordered list	- unordered list
CTRL + SHIFT + C	code block
CTRL + SHIFT + I	picture	
CTRL + SHIFT + Z	forward	Forward history in editor, not the function of system
CTRL + SHIFT + F	Beautify
CTRL + ALT + C	code row
CTRL + SHIFT + ALT + T	table	|table|

🪤 Internal Components

<script lang="ts" setup>
import { NormalToolbar } from 'md-editor-v3';
</script>

On-demand import. For more examples, refer to document.

🐣 NormalToolbar

NormalToolbar

• props

  • title: string, not necessary, title of toolbar.

• events

  • onClick: (e: MouseEvent) => void, necessary.

• slots

  • trigger: VNode | JSX.Element, necessary, it is usually an icon, which is displayed on the toolbar.

🐼 DropdownToolbar

DropdownToolbar

• props

  • title: string, not necessary, title of toolbar.
  • visible: boolean, necessary.

• events

  • onChange: (visible: boolean) => void, necessary.

• slots

  • trigger: VNode | JSX.Element, necessary, it is usually an icon, which is displayed on the toolbar.
  • overlay: VNode | JSX.Element, necessary, content of dropdown box.

🦉 ModalToolbar

ModalToolbar

• props

  • title: string, not necessary, title of toolbar.
  • modalTitle: string, not necessary, title of the Modal.
  • visible: boolean, necessary, visibility of Modal.
  • width: string, not necessary, width of Modal, default auto.
  • height: string, same as width.
  • showAdjust: boolean, not necessary, visibility of fullscreen button.
  • isFullscreen: boolean, necessary when showAdjust = true, status of fullscreen.
  • class: string, not necessary.
  • style: CSSProperties | string, not necessary.
  • showMask: boolean, not necessary, whether to display the mask layer, default true.

• events

  • onClick: () => void, necessary.
  • onClose: () => void, necessary, closed event.
  • onAdjust: (val: boolean) => void, fullscreen button was clicked.

• slots

  • trigger: VNode | JSX.Element, necessary, it is usually an icon, which is displayed on the toolbar.
  • default: VNode | JSX.Element, necessary, content of Modal.

🐻 MdCatalog

MdCatalog

• props

  • editorId: string, necessary, same as editor's editorId, used to register listening events.
  • class: string, not necessary.
  • mdHeadingId: MdHeadingId, not necessary, same as editor.
  • scrollElement: string | HTMLElement, not necessary, it is an element selector when its type is string. When previewOnly eq true, it is usually set to document.documentElement.
  • theme: 'light' | 'dark', not necessary, provide it when you want to change theme online, it is the same as Editor theme.
  • offsetTop: number, not necessary, highlight current item of catalogs when title is offsetTop pixels from the top, default 20.
  • scrollElementOffsetTop: number, not necessary, offsetTop of the scroll container，default 0.

• events

  • onClick: (e: MouseEvent, t: TocItem) => void, not necessary, heading was clicked.
  • onActive: (heading: HeadList | undefined) => void, not necessary, heading was highlighted.

🛸 MdModal

MdModal

• props

  • title: string, not necessary, title of Modal.
  • visible: boolean, necessary, visibility of Modal.
  • width: string, not necessary, width of Modal, default auto.
  • height: string, same as width.
  • showAdjust: boolean, not necessary, visibility of fullscreen button.
  • isFullscreen: boolean, necessary when showAdjust = true, status of fullscreen.
  • class: string, not necessary.
  • style: CSSProperties | string, not necessary.
  • showMask: boolean, not necessary, whether to display the mask layer, default true.

• events

  • onClose: () => void, necessary, closed event.
  • onAdjust: (val: boolean) => void, fullscreen button was clicked.

• slots

  • default: VNode | JSX.Element, necessary, content of Modal.

🪤 Internal Configuration

import {
  iconfontClassUrl,
  iconfontSvgUrl,
  allToolbar,
  allFooter,
  zh_CN,
  en_US
} from 'md-editor-v3';

console.log(iconfontClassUrl, iconfontSvgUrl, allToolbar, allFooter, zh_CN, en_US);

🗂 Examples

🎸 Jsx Template

import { defineComponent, reactive } from 'vue';
import { MdEditor } from 'md-editor-v3';
import 'md-editor-v3/lib/style.css';

export default defineComponent({
  setup() {
    const md = reactive({
      text: '# Hello Editor'
    });
    return () => (
      <MdEditor modelValue={md.text} onChange={(value) => (md.text = value)} />
    );
  }
});

🥹 Upload Picture

Tips: When you paste and upload GIF, it will upload a static picture. So you should upload it by file system!

<template>
  <MdEditor v-model="text" @onUploadImg="onUploadImg" />
</template>

<script setup>
import { ref } from 'vue';
import axios from 'axios';
import { MdEditor } from 'md-editor-v3';
import 'md-editor-v3/lib/style.css';

const text = ref('# Hello Editor');

const onUploadImg = async (files, callback) => {
  const res = await Promise.all(
    files.map((file) => {
      return new Promise((rev, rej) => {
        const form = new FormData();
        form.append('file', file);

        axios
          .post('/api/img/upload', form, {
            headers: {
              'Content-Type': 'multipart/form-data'
            }
          })
          .then((res) => rev(res))
          .catch((error) => rej(error));
      });
    })
  );

  // Approach 1
  callback(res.map((item) => item.data.url));

  // Approach 2
  // callback(
  //   res.map((item: any) => ({
  //     url: item.data.url,
  //     alt: 'alt',
  //     title: 'title'
  //   }))
  // );
};
</script>

🧙‍♂️ Change Styles

.css-vars(@isDark) {
  --md-color: if(@isDark, #999, #222);
  --md-hover-color: if(@isDark, #bbb, #000);
  --md-bk-color: if(@isDark, #000, #fff);
  --md-bk-color-outstand: if(@isDark, #111, #f6f6f6);
  --md-bk-hover-color: if(@isDark, #1b1a1a, #f5f7fa);
  --md-border-color: if(@isDark, #2d2d2d, #e6e6e6);
  --md-border-hover-color: if(@isDark, #636262, #b9b9b9);
  --md-border-active-color: if(@isDark, #777, #999);
  --md-modal-mask: #00000073;
  --md-modal-shadow: if(@isDark, 0px 6px 24px 2px #00000066, 0px 6px 24px 2px #00000019);
  --md-scrollbar-bg-color: if(@isDark, #0f0f0f, #e2e2e2);
  --md-scrollbar-thumb-color: if(@isDark, #2d2d2d, #0000004d);
  --md-scrollbar-thumb-hover-color: if(@isDark, #3a3a3a, #00000059);
  --md-scrollbar-thumb-active-color: if(@isDark, #3a3a3a, #00000061);
}

.md-editor {
  .css-vars(false);
}

.md-editor-dark {
  .css-vars(true);
}

Change background color in dark mode:

.md-editor-dark {
  --md-bk-color: #333 !important;
}