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.
- **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.
- **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.*
- **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.
- **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://)"]`.
- **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"`.
- **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`.
- **uploadImage**: If set to `true`, enables the image upload functionality, which can be triggered by drag&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 image size at server-side). Defaults to `1024*1024*2` (2Mb).
- **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`.
- **imageUploadEndpoint**: The endpoint where the images data will be sent, via an asynchronous *POST* request. The server is supposed to save this image, and if it's successful, return a 200-OK HTTP response containing the relative path of the image. No default value.
- **imageTexts**: Several string literals used in image-upload features:
- **errorImageTooBig**: The error prompted to the user when the size of the image being imported is bigger than the `imageMaxSize`, where `#image_name#`, `#image_size#` and `#image_max_size#` will replaced by their respective values. Defaults to `Image #image_name# is too big (#image_size#).\n' +
'Maximum file size is #image_max_size#.`.
- **sizeUnits**: A comma-separated list of units used to display messages with human-readable file sizes. Defaults to `b,Kb,Mb`.
- **codeSyntaxHighlighting**: If set to `true`, will highlight using [highlight.js](https://github.com/isagalaev/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:<br>`<scriptsrc="https://cdn.jsdelivr.net/highlight.js/latest/highlight.min.js"></script>`<br>`<linkrel="stylesheet"href="https://cdn.jsdelivr.net/highlight.js/latest/styles/github.min.css">`
- **hljs**: An injectible instance of [highlight.js](https://github.com/isagalaev/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](https://marked.js.org/#/USING_ADVANCED.md#options). Other `renderingConfig` options will take precedence.
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 JS. "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)").
EasyMDE comes with an array of predefined keyboard shortcuts, but they can be altered with a configuration option. The list of default ones is as follows:
Shortcuts are automatically converted between platforms. If you define a shortcut as "Cmd-B", on PC that shortcut will be changed to "Ctrl-B". Conversely, a shortcut defined as "Ctrl-B" will become "Cmd-B" for Mac users.
You can revert to the initial text area by calling the `toTextArea` method. Note that this clears up the autosave (if enabled) associated with it. The text area will retain any text from the destroyed EasyMDE instance.
SimpleMDE began as an improvement of [lepture's Editor project](https://github.com/lepture/editor), but has now taken on an identity of its own. It is bundled with [CodeMirror](https://github.com/codemirror/codemirror) and depends on [Font Awesome](http://fontawesome.io).
CodeMirror is the backbone of the project and parses much of the Markdown syntax as it's being written. This allows us to add styles to the Markdown that's being written. Additionally, a toolbar and status bar have been added to the top and bottom, respectively. Previews are rendered by [Marked](https://github.com/chjj/marked) using GFM.
I originally made this fork to implement FontAwesome 5 compatibility into SimpleMDE. When that was done I submitted a [pull request](https://github.com/sparksuite/simplemde-markdown-editor/pull/666), which has not been accepted yet. This, and the project being inactive since May 2017, triggered me to make more changes and try to put new life into the project.
Changes include:
* FontAwesome 5 compatibility
* Guide button works when editor is in preview mode
* Links are now `https://` by default
* Small styling changes
* Support for Node 8 and beyond
* Lots of refactored code
* Links in preview will open in a new tab by default
* Typescript support
My intention is to continue development on this project, improving it and keeping it alive.
You may want to edit this library to adapt its behavior to your needs. This can be done in some quick steps:
1. Follow the [prerequisites](./CONTRIBUTING.md#prerequisites) and [installation](./CONTRIBUTING.md#installation) instructions in the contribution guide;
2. Do your changes;
3. Run `gulp` command, which will generate files: `dist/easymde.min.css` and `dist/easymde.min.js`;
4. Copy-paste those files to your code base, and you are done.