A drop-in JavaScript text area replacement for writing beautiful and understandable Markdown.
EasyMDE allows users who may be less experienced with Markdown to use familiar toolbar buttons and shortcuts.
In addition, the syntax is rendered while editing to clearly show the expected result. Headings are larger, emphasized words are italicized, links are underlined, etc.
EasyMDE also features both built-in auto saving and spell checking.
The editor is entirely customizable, from theming to toolbar buttons and javascript hooks.
Use easyMDE.value() to get the content of the editor:
<script>easyMDE.value();</script>
Use easyMDE.value(val) to set the content of the editor:
<script>easyMDE.value('New input for **EasyMDE**');</script>
Configuration
Options list
autoDownloadFontAwesome: If set to true, force downloads Font Awesome (used for icons). If set to false, prevents downloading. Defaults to undefined, which will intelligently check whether Font Awesome has already been included, then download accordingly.
autofocus: If set to true, focuses the editor automatically. Defaults to false.
autosave: Saves the text that's being written and will load it back in the future. It will forget the text when the form it's contained in is submitted.
enabled: If set to true, saves the text automatically. Defaults to false.
delay: Delay between saves, in milliseconds. Defaults to 10000 (10 seconds).
submit_delay: Delay before assuming that submit of the form failed and saving the text, in milliseconds. Defaults to autosave.delay or 10000 (10 seconds).
uniqueId: You must set a unique string identifier so that EasyMDE can autosave. Something that separates this from other instances of EasyMDE elsewhere on your website.
timeFormat: Set DateTimeFormat. More information see DateTimeFormat instances. Default locale: en-US, format: hour:minute.
text: Set text for autosave.
autoRefresh: Useful, when initializing the editor in a hidden DOM node. If set to { delay: 300 }, it will check every 300 ms if the editor is visible and if positive, call CodeMirror's refresh().
blockStyles: Customize how certain buttons that style blocks of text behave.
bold: Can be set to ** or __. Defaults to **.
code: Can be set to ``` or ~~~. Defaults to ```.
italic: Can be set to * or _. Defaults to *.
unorderedListStyle: can be *, - or +. Defaults to *.
scrollbarStyle: Chooses a scrollbar implementation. The default is "native", showing native scrollbars. The core library also provides the "null" style, which completely hides the scrollbars. Addons can implement additional scrollbar models.
element: The DOM element for the textarea element to use. Defaults to the first textarea element on the page.
forceSync: If set to true, force text changes made in EasyMDE to be immediately stored in original text area. Defaults to false.
hideIcons: An array of icon names to hide. Can be used to hide specific icons shown by default without completely customizing the toolbar.
indentWithTabs: If set to false, indent using spaces instead of tabs. Defaults to true.
initialValue: If set, will customize the initial value of the editor.
previewImagesInEditor: - EasyMDE will show preview of images, false by default, preview for images will appear only for images on separate lines.
imagesPreviewHandler: - A custom function for handling the preview of images. Takes the parsed string between the parantheses of the image markdown  as argument and returns a string that serves as the src attribute of the <img> tag in the preview. Enables dynamic previewing of images in the frontend without having to upload them to a server, allows copy-pasting of images to the editor with preview.
insertTexts: Customize how certain buttons that insert text behave. Takes an array with two elements. The first element will be the text inserted before the cursor or highlight, and the second element will be inserted after. For example, this is the default link value: ["[", "](http://)"].
horizontalRule
image
link
table
lineNumbers: If set to true, enables line numbers in the editor.
lineWrapping: If set to false, disable line wrapping. Defaults to true.
minHeight: Sets the minimum height for the composition area, before it starts auto-growing. Should be a string containing a valid CSS value like "500px". Defaults to "300px".
maxHeight: Sets fixed height for the composition area. minHeight option will be ignored. Should be a string containing a valid CSS value like "500px". Defaults to undefined.
onToggleFullScreen: A function that gets called when the editor's full screen mode is toggled. The function will be passed a boolean as parameter, true when the editor is currently going into full screen mode, or false.
parsingConfig: Adjust settings for parsing the Markdown during editing (not previewing).
allowAtxHeaderWithoutSpace: If set to true, will render headers without a space after the #. Defaults to false.
strikethrough: If set to false, will not process GFM strikethrough syntax. Defaults to true.
underscoresBreakWords: If set to true, let underscores be a delimiter for separating words. Defaults to false.
overlayMode: Pass a custom codemirror overlay mode to parse and style the Markdown during editing.
mode: A codemirror mode object.
combine: If set to false, will replace CSS classes returned by the default Markdown mode. Otherwise the classes returned by the custom mode will be combined with the classes returned by the default mode. Defaults to true.
placeholder: If set, displays a custom placeholder message.
previewClass: A string or array of strings that will be applied to the preview screen when activated. Defaults to "editor-preview".
previewRender: Custom function for parsing the plaintext Markdown and returning HTML. Used when user previews.
promptURLs: If set to true, a JS alert window appears asking for the link or image URL. Defaults to false.
promptTexts: Customize the text used to prompt for URLs.
image: The text to use when prompting for an image's URL. Defaults to URL of the image:.
link: The text to use when prompting for a link's URL. Defaults to URL for the link:.
iconClassMap: Used to specify the icon class names for the various toolbar buttons.
uploadImage: If set to true, enables the image upload functionality, which can be triggered by drag and drop, copy-paste and through the browse-file window (opened when the user click on the upload-image icon). Defaults to false.
imageMaxSize: Maximum image size in bytes, checked before upload (note: never trust client, always check the image size at server-side). Defaults to 1024 * 1024 * 2 (2 MB).
imageAccept: A comma-separated list of mime-types used to check image type before upload (note: never trust client, always check file types at server-side). Defaults to image/png, image/jpeg.
imageUploadFunction: A custom function for handling the image upload. Using this function will render the options imageMaxSize, imageAccept, imageUploadEndpoint and imageCSRFToken ineffective.
The function gets a file and onSuccess and onError callback functions as parameters. onSuccess(imageUrl: string) and onError(errorMessage: string)
imageUploadEndpoint: The endpoint where the images data will be sent, via an asynchronous POST request. The server is supposed to save this image, and return a JSON response.
if the request was successfully processed (HTTP 200 OK): {"data": {"filePath": "<filePath>"}} where filePath is the path of the image (absolute if imagePathAbsolute is set to true, relative if otherwise);
otherwise: {"error": "<errorCode>"}, where errorCode can be noFileGiven (HTTP 400 Bad Request), typeNotAllowed (HTTP 415 Unsupported Media Type), fileTooLarge (HTTP 413 Payload Too Large) or importError (see errorMessages below). If errorCode is not one of the errorMessages, it is alerted unchanged to the user. This allows for server-side error messages.
No default value.
imagePathAbsolute: If set to true, will treat imageUrl from imageUploadFunction and filePath returned from imageUploadEndpoint as an absolute rather than relative path, i.e. not prepend window.location.origin to it.
imageCSRFToken: CSRF token to include with AJAX call to upload image. For various instances like Django, Spring and Laravel.
imageCSRFName: CSRF token filed name to include with AJAX call to upload image, applied when imageCSRFToken has value, defaults to csrfmiddlewaretoken.
imageCSRFHeader: If set to true, passing CSRF token via header. Defaults to false, which pass CSRF through request body.
imageTexts: Texts displayed to the user (mainly on the status bar) for the import image feature, where #image_name#, #image_size# and #image_max_size# will replaced by their respective values, that can be used for customization or internationalization:
sbInit: Status message displayed initially if uploadImage is set to true. Defaults to Attach files by drag and dropping or pasting from clipboard..
sbOnDragEnter: Status message displayed when the user drags a file to the text area. Defaults to Drop image to upload it..
sbOnDrop: Status message displayed when the user drops a file in the text area. Defaults to Uploading images #images_names#.
sbProgress: Status message displayed to show uploading progress. Defaults to Uploading #file_name#: #progress#%.
sbOnUploaded: Status message displayed when the image has been uploaded. Defaults to Uploaded #image_name#.
sizeUnits: A comma-separated list of units used to display messages with human-readable file sizes. Defaults to B, KB, MB (example: 218 KB). You can use B,KB,MB instead if you prefer without whitespaces (218KB).
errorMessages: Errors displayed to the user, using the errorCallback option, where #image_name#, #image_size# and #image_max_size# will replaced by their respective values, that can be used for customization or internationalization:
noFileGiven: The server did not receive any file from the user. Defaults to You must select a file..
typeNotAllowed: The user send a file type which doesn't match the imageAccept list, or the server returned this error code. Defaults to This image type is not allowed..
fileTooLarge: The size of the image being imported is bigger than the imageMaxSize, or if the server returned this error code. Defaults to Image #image_name# is too big (#image_size#).\nMaximum file size is #image_max_size#..
importError: An unexpected error occurred when uploading the image. Defaults to Something went wrong when uploading the image #image_name#..
errorCallback: A callback function used to define how to display an error message. Defaults to (errorMessage) => alert(errorMessage).
renderingConfig: Adjust settings for parsing the Markdown during previewing (not editing).
codeSyntaxHighlighting: If set to true, will highlight using highlight.js. Defaults to false. To use this feature you must include highlight.js on your page or pass in using the hljs option. For example, include the script and the CSS files like: <script src="https://cdn.jsdelivr.net/highlight.js/latest/highlight.min.js"></script> <link rel="stylesheet" href="https://cdn.jsdelivr.net/highlight.js/latest/styles/github.min.css">
hljs: An injectible instance of highlight.js. If you don't want to rely on the global namespace (window.hljs), you can provide an instance here. Defaults to undefined.
markedOptions: Set the internal Markdown renderer's options. Other renderingConfig options will take precedence.
singleLineBreaks: If set to false, disable parsing GitHub Flavored Markdown (GFM) single line breaks. Defaults to true.
sanitizerFunction: Custom function for sanitizing the HTML output of Markdown renderer.
shortcuts: Keyboard shortcuts associated with this instance. Defaults to the array of shortcuts.
showIcons: An array of icon names to show. Can be used to show specific icons hidden by default without completely customizing the toolbar.
spellChecker: If set to false, disable the spell checker. Defaults to true. Optionally pass a CodeMirrorSpellChecker-compliant function.
inputStyle: textarea or contenteditable. Defaults to textarea for desktop and contenteditable for mobile. contenteditable option is necessary to enable nativeSpellcheck.
nativeSpellcheck: If set to false, disable native spell checker. Defaults to true.
sideBySideFullscreen: If set to false, allows side-by-side editing without going into fullscreen. Defaults to true.
status: If set to false, hide the status bar. Defaults to the array of built-in status bar items.
Optionally, you can set an array of status bar items to include, and in what order. You can even define your own custom status bar items.
styleSelectedText: If set to false, remove the CodeMirror-selectedtext class from selected lines. Defaults to true.
syncSideBySidePreviewScroll: If set to false, disable syncing scroll in side by side mode. Defaults to true.
tabSize: If set, customize the tab size. Defaults to 2.
theme: Override the theme. Defaults to easymde.
toolbar: If set to false, hide the toolbar. Defaults to the array of icons.
toolbarTips: If set to false, disable toolbar button tips. Defaults to true.
direction: rtl or ltr. Changes text direction to support right-to-left languages. Defaults to ltr.
Options example
Most options demonstrate the non-default behavior:
consteditor=newEasyMDE({autofocus: true,autosave: {enabled: true,uniqueId: "MyUniqueID",delay: 1000,submit_delay: 5000,timeFormat: {locale: 'en-US',format: {year: 'numeric',month: 'long',day: '2-digit',hour: '2-digit',minute: '2-digit',},},text: "Autosaved: "},blockStyles: {bold: "__",italic: "_",},unorderedListStyle: "-",element: document.getElementById("MyID"),forceSync: true,hideIcons: ["guide","heading"],indentWithTabs: false,initialValue: "Hello world!",insertTexts: {horizontalRule: ["","\n\n-----\n\n"],image: ["![](http://",")"],link: ["[","](https://)"],table: ["","\n\n| Column 1 | Column 2 | Column 3 |\n| -------- | -------- | -------- |\n| Text | Text | Text |\n\n"],},lineWrapping: false,minHeight: "500px",parsingConfig: {allowAtxHeaderWithoutSpace: true,strikethrough: false,underscoresBreakWords: true,},placeholder: "Type here...",previewClass: "my-custom-styling",previewClass: ["my-custom-styling","more-custom-styling"],previewRender: (plainText)=>customMarkdownParser(plainText),// Returns HTML from a custom parserpreviewRender: (plainText,preview)=>{// Async methodsetTimeout(()=>{preview.innerHTML=customMarkdownParser(plainText);},250);return"Loading...";},promptURLs: true,promptTexts: {image: "Custom prompt for URL:",link: "Custom prompt for URL:",},renderingConfig: {singleLineBreaks: false,codeSyntaxHighlighting: true,sanitizerFunction: (renderedHTML)=>{// Using DOMPurify and only allowing <b> tagsreturnDOMPurify.sanitize(renderedHTML,{ALLOWED_TAGS: ['b']})},},shortcuts: {drawTable: "Cmd-Alt-T"},showIcons: ["code","table"],spellChecker: false,status: false,status: ["autosave","lines","words","cursor"],// Optional usagestatus: ["autosave","lines","words","cursor",{className: "keystrokes",defaultValue: (el)=>{el.setAttribute('data-keystrokes',0);},onUpdate: (el)=>{constkeystrokes=Number(el.getAttribute('data-keystrokes'))+1;el.innerHTML=`${keystrokes} Keystrokes`;el.setAttribute('data-keystrokes',keystrokes);},}],// Another optional usage, with a custom status bar item that counts keystrokesstyleSelectedText: false,sideBySideFullscreen: false,syncSideBySidePreviewScroll: false,tabSize: 4,toolbar: false,toolbarTips: false,});
Toolbar icons
Below are the built-in toolbar icons (only some of which are enabled by default), which can be reorganized however you like. "Name" is the name of the icon, referenced in the JavaScript. "Action" is either a function or a URL to open. "Class" is the class given to the icon. "Tooltip" is the small tooltip that appears via the title="" attribute. Note that shortcut hints are added automatically and reflect the specified action if it has a key bind assigned to it (i.e. with the value of action set to bold and that of tooltip set to Bold, the final text the user will see would be "Bold (Ctrl-B)").
Additionally, you can add a separator between any icons by adding "|" to the toolbar array.
Name
Action
Tooltip Class
bold
toggleBold
Bold fa fa-bold
italic
toggleItalic
Italic fa fa-italic
strikethrough
toggleStrikethrough
Strikethrough fa fa-strikethrough
heading
toggleHeadingSmaller
Heading fa fa-header
heading-smaller
toggleHeadingSmaller
Smaller Heading fa fa-header
heading-bigger
toggleHeadingBigger
Bigger Heading fa fa-lg fa-header
heading-1
toggleHeading1
Big Heading fa fa-header header-1
heading-2
toggleHeading2
Medium Heading fa fa-header header-2
heading-3
toggleHeading3
Small Heading fa fa-header header-3
code
toggleCodeBlock
Code fa fa-code
quote
toggleBlockquote
Quote fa fa-quote-left
unordered-list
toggleUnorderedList
Generic List fa fa-list-ul
ordered-list
toggleOrderedList
Numbered List fa fa-list-ol
clean-block
cleanBlock
Clean block fa fa-eraser
link
drawLink
Create Link fa fa-link
image
drawImage
Insert Image fa fa-picture-o
upload-image
drawUploadedImage
Raise browse-file window fa fa-image
table
drawTable
Insert Table fa fa-table
horizontal-rule
drawHorizontalRule
Insert Horizontal Line fa fa-minus
preview
togglePreview
Toggle Preview fa fa-eye no-disable
side-by-side
toggleSideBySide
Toggle Side by Side fa fa-columns no-disable no-mobile
fullscreen
toggleFullScreen
Toggle Fullscreen fa fa-arrows-alt no-disable no-mobile
consteasyMDE=newEasyMDE({toolbar: [{name: "bold",action: EasyMDE.toggleBold,className: "fa fa-bold",title: "Bold",},"italic",// shortcut to pre-made button{name: "custom",action: (editor)=>{// Add your own code},className: "fa fa-star",text: "Starred",title: "Custom Button",attributes: {// for custom attributesid: "custom-id","data-value": "custom value"// HTML5 data-* attributes need to be enclosed in quotation marks ("") because of the dash (-) in its name.}},"|"// Separator// [, ...]]});
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