543 lines
14 KiB
Markdown
543 lines
14 KiB
Markdown
Features
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===
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Introduction
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===
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<i class="fa fa-file-text"></i> **HackMD** is a realtime, multiplatform collaborative markdown note editor.
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This means that you can write notes with other people on your **desktop**, **tablet** or even on the **phone**.
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You can sign-in via **Facebook**, **Twitter**, **GitHub**, or **Dropbox** in the [_homepage_](/).
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Note that this service is still in an early stage, and thus still has some [_issues_](https://github.com/hackmdio/hackmd/issues?q=is%3Aopen+is%3Aissue+label%3Abug).
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Please report new issues in [GitHub](https://github.com/hackmdio/hackmd/issues/new).
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If you need instant help, please send us a [Facebook message](https://www.messenger.com/t/hackmdio).
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**Thank you very much!**
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Workspace
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===
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## Modes
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**Desktop & Tablet**
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<i class="fa fa-edit fa-fw"></i> Edit: See only the editor.
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<i class="fa fa-eye fa-fw"></i> View: See only the result.
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<i class="fa fa-columns fa-fw"></i> Both: See both in split view.
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**Mobile**
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<i class="fa fa-toggle-on fa-fw"></i> View: See only the result.
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<i class="fa fa-toggle-off fa-fw"></i> Edit: See only the editor.
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## Image Upload:
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You can upload an image simply by clicking on the camera button <i class="fa fa-camera"></i>.
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Alternatively, you can **drag-n-drop** an image into the editor. Even **pasting** images is possible!
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This will automatically upload the image to **[imgur](http://imgur.com)**, nothing to worry. :tada:
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## Share Notes:
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If you want to share an **editable** note, just copy the URL.
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If you want to share a **read-only** note, simply press publish button <i class="fa fa-share-square-o"></i> and copy the URL.
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## Save a Note:
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Currently, you can save to **Dropbox** <i class="fa fa-dropbox"></i> or save an `.md` file <i class="fa fa-file-text"></i> locally.
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## Import Notes:
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Similarly to the _save_ feature, you can also import an `.md` file from **Dropbox** <i class="fa fa-dropbox"></i>,
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or import content from your **clipboard** <i class="fa fa-clipboard"></i>, and that can parse some **html** which might be useful :smiley:
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## Permissions:
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It is possible to change the access permission to a note through the little button on the top right of the view.
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There are four possible options:
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| |Owner read/write|Signed-in read|Signed-in write|Guest read|Guest write|
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|:-----------------------------|:--------------:|:------------:|:-------------:|:--------:|:---------:|
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|<span class="text-nowrap"><i class="fa fa-leaf fa-fw"></i> **Freely**</span> |✔|✔|✔|✔|✔|
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|<span class="text-nowrap"><i class="fa fa-pencil fa-fw"></i> **Editable**</span> |✔|✔|✔|✔|✖|
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|<span class="text-nowrap"><i class="fa fa-id-card fa-fw"></i> **Limited**</span> |✔|✔|✔|✖|✖|
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|<span class="text-nowrap"><i class="fa fa-lock fa-fw"></i> **Locked**</span> |✔|✔|✖|✔|✖|
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|<span class="text-nowrap"><i class="fa fa-umbrella fa-fw"></i> **Protected**</span> |✔|✔|✖|✖|✖|
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|<span class="text-nowrap"><i class="fa fa-hand-stop-o fa-fw"></i> **Private**</span> |✔|✖|✖|✖|✖|
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**Only the owner of the note can change the note's permissions.**
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## Embed a Note:
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Notes can be embedded as follows:
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```xml
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<iframe width="100%" height="500" src="https://hackmd.io/features" frameborder="0"></iframe>
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```
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## [Slide Mode](./slide-example):
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You can use a special syntax to organize your note into slides.
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After that, you can use the **Slide Mode** <i class="fa fa-tv"></i> to make a presentation.
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Visit the above link for details.
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View
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===
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## Table of Contents:
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You can look at the bottom right section of the view area, there is a _ToC_ button <i class="fa fa-bars"></i>.
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Pressing that button will show you a current _Table of Contents_, and will highlight which section you're at.
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ToCs support up to **three header levels**.
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## Permalink
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Every header will automatically add a permalink on the right side.
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You can hover and click <i class="fa fa-chain"></i> to anchor on it.
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Edit:
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===
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## Shortcut Keys:
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Just like Sublime text, which is pretty quick and convenient.
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> For more infomation, see [here](https://codemirror.net/demo/sublime.html).
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## Auto-Complete:
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This editor provides full auto-complete hints in markdown.
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- Emojis: type `:` to show hints.
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- Code blocks: type ` ``` ` and plus a character to show hint. <i hidden>```</i>
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- Headers: type `#` to show hint.
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- Referrals: type `[]` to show hint.
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- Externals: type `{}` to show hint.
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- Images: type `!` to show hint.
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## Title:
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This will take the first **level 1 header** as the note title.
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## Tags:
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Using tags as follows, the specified tags will show in your **history**.
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###### tags: `features` `cool` `updated`
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## [YAML Metadata](./yaml-metadata)
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You can provide advanced note information to set the browser behavior (visit above link for details):
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- robots: set web robots meta
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- lang: set browser language
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- dir: set text direction
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- breaks: set to use line breaks
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- GA: set to use Google Analytics
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- disqus: set to use Disqus
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- slideOptions: setup slide mode options
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## ToC:
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Use the syntax `[TOC]` to embed table of content into your note.
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[TOC]
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## Emoji
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You can type any emoji like this :smile: :smiley: :cry: :wink:
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> See full emoji list [here](http://www.emoji-cheat-sheet.com/).
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## ToDo List:
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- [ ] ToDos
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- [x] Buy some salad
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- [ ] Brush teeth
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- [x] Drink some water
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## Code Block:
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We support many programming languages, use the auto complete function to see the entire list.
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```javascript=
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var s = "JavaScript syntax highlighting";
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alert(s);
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function $initHighlight(block, cls) {
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try {
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if (cls.search(/\bno\-highlight\b/) != -1)
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return process(block, true, 0x0F) +
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' class=""';
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} catch (e) {
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/* handle exception */
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}
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for (var i = 0 / 2; i < classes.length; i++) {
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if (checkCondition(classes[i]) === undefined)
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return /\d+[\s/]/g;
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}
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}
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```
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> If you want **line numbers**, type `=` after specifying the code block languagues.
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> Also, you can specify the start line number.
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> Like below, the line number starts from 101:
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```javascript=101
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var s = "JavaScript syntax highlighting";
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alert(s);
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function $initHighlight(block, cls) {
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try {
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if (cls.search(/\bno\-highlight\b/) != -1)
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return process(block, true, 0x0F) +
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' class=""';
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} catch (e) {
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/* handle exception */
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}
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for (var i = 0 / 2; i < classes.length; i++) {
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if (checkCondition(classes[i]) === undefined)
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return /\d+[\s/]/g;
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}
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}
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```
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> Or you might want to continue the previous code block's line number, use `=+`
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```javascript=+
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var s = "JavaScript syntax highlighting";
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alert(s);
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```
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> Somtimes you have a super long text without breaks. It's time to use `!` to wrap your code.
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```!
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When you’re a carpenter making a beautiful chest of drawers, you’re not going to use a piece of plywood on the back.
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```
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### Blockquote Tags:
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> Using the syntax below to specifiy your **name, time and color** to vary the blockquotes.
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> [name=ChengHan Wu] [time=Sun, Jun 28, 2015 9:59 PM] [color=#907bf7]
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> > Even support the nest blockquotes!
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> > [name=ChengHan Wu] [time=Sun, Jun 28, 2015 10:00 PM] [color=red]
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## Externals
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### YouTube
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{%youtube 1G4isv_Fylg %}
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### Vimeo
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{%vimeo 124148255 %}
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### Gist
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{%gist schacon/4277%}
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### SlideShare
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{%slideshare briansolis/26-disruptive-technology-trends-2016-2018-56796196 %}
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### Speakerdeck
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{%speakerdeck sugarenia/xxlcss-how-to-scale-css-and-keep-your-sanity %}
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### PDF
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**Caution: this might be blocked by your browser if not using an `https` URL.**
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{%pdf https://papers.nips.cc/paper/5346-sequence-to-sequence-learning-with-neural-networks.pdf %}
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## MathJax
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You can render *LaTeX* mathematical expressions using **MathJax**, as on [math.stackexchange.com](http://math.stackexchange.com/):
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The *Gamma function* satisfying $\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N$ is via the Euler integral
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$$
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x = {-b \pm \sqrt{b^2-4ac} \over 2a}.
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$$
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$$
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\Gamma(z) = \int_0^\infty t^{z-1}e^{-t}dt\,.
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$$
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> More information about **LaTeX** mathematical expressions [here](http://meta.math.stackexchange.com/questions/5020/mathjax-basic-tutorial-and-quick-reference).
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## UML Diagrams
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### Sequence Diagrams
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You can render sequence diagrams like this:
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```sequence
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Alice->Bob: Hello Bob, how are you?
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Note right of Bob: Bob thinks
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Bob-->Alice: I am good thanks!
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Note left of Alice: Alice responds
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Alice->Bob: Where have you been?
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```
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### Flow Charts
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Flow charts can be specified like this:
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```flow
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st=>start: Start
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e=>end: End
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op=>operation: My Operation
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op2=>operation: lalala
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cond=>condition: Yes or No?
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st->op->op2->cond
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cond(yes)->e
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cond(no)->op2
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```
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### Graphviz
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```graphviz
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digraph hierarchy {
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nodesep=1.0 // increases the separation between nodes
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node [color=Red,fontname=Courier,shape=box] //All nodes will this shape and colour
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edge [color=Blue, style=dashed] //All the lines look like this
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Headteacher->{Deputy1 Deputy2 BusinessManager}
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Deputy1->{Teacher1 Teacher2}
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BusinessManager->ITManager
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{rank=same;ITManager Teacher1 Teacher2} // Put them on the same level
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}
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```
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### Mermaid
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```mermaid
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gantt
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title A Gantt Diagram
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section Section
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A task :a1, 2014-01-01, 30d
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Another task :after a1 , 20d
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section Another
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Task in sec :2014-01-12 , 12d
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anther task : 24d
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```
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### Abc
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```abc
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X:1
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T:Speed the Plough
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M:4/4
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C:Trad.
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K:G
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|:GABc dedB|dedB dedB|c2ec B2dB|c2A2 A2BA|
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GABc dedB|dedB dedB|c2ec B2dB|A2F2 G4:|
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|:g2gf gdBd|g2f2 e2d2|c2ec B2dB|c2A2 A2df|
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g2gf g2Bd|g2f2 e2d2|c2ec B2dB|A2F2 G4:|
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```
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> More information about **sequence diagrams** syntax [here](http://bramp.github.io/js-sequence-diagrams/).
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> More information about **flow charts** syntax [here](http://adrai.github.io/flowchart.js/).
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> More information about **graphviz** syntax [here](http://www.tonyballantyne.com/graphs.html)
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> More information about **mermaid** syntax [here](http://knsv.github.io/mermaid)
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> More information about **abc** syntax [here](http://abcnotation.com/learn)
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Alert Area
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---
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:::success
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Yes :tada:
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:::
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:::info
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This is a message :mega:
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:::
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:::warning
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Watch out :zap:
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:::
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:::danger
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Oh No! :fire:
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:::
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## Typography
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### Headers
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```
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# h1 Heading
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## h2 Heading
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### h3 Heading
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#### h4 Heading
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##### h5 Heading
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###### h6 Heading
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```
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### Horizontal Rules
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___
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---
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***
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### Typographic Replacements
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Enable typographer option to see result.
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(c) (C) (r) (R) (tm) (TM) (p) (P) +-
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test.. test... test..... test?..... test!....
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!!!!!! ???? ,,
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Remarkable -- awesome
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"Smartypants, double quotes"
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'Smartypants, single quotes'
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### Emphasis
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**This is bold text**
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__This is bold text__
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*This is italic text*
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_This is italic text_
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~~Deleted text~~
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lu~lala~
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Superscript: 19^th^
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Subscript: H~2~O
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++Inserted text++
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==Marked text==
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### Blockquotes
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> Blockquotes can also be nested...
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>> ...by using additional greater-than signs right next to each other...
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> > > ...or with spaces between arrows.
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### Lists
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#### Unordered
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+ Create a list by starting a line with `+`, `-`, or `*`
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+ Sub-lists are made by indenting 2 spaces:
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- Marker character change forces new list start:
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* Ac tristique libero volutpat at
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+ Facilisis in pretium nisl aliquet
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- Nulla volutpat aliquam velit
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+ Very easy!
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#### Ordered
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1. Lorem ipsum dolor sit amet
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2. Consectetur adipiscing elit
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3. Integer molestie lorem at massa
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1. You can use sequential numbers...
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1. ...or keep all the numbers as `1.`
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1. feafw
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2. 332
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3. 242
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4. 2552
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1. e2
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Start numbering with offset:
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57. foo
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1. bar
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### Code
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Inline `code`
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Indented code
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// Some comments
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line 1 of code
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line 2 of code
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line 3 of code
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Block code "fences"
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```
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Sample text here...
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```
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Syntax highlighting
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``` js
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var foo = function (bar) {
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return bar++;
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};
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console.log(foo(5));
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```
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### Tables
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| Option | Description |
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| ------ | ----------- |
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| data | path to data files to supply the data that will be passed into templates. |
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| engine | engine to be used for processing templates. Handlebars is the default. |
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| ext | extension to be used for dest files. |
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Right aligned columns
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| Option | Description |
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| ------:| -----------:|
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| data | path to data files to supply the data that will be passed into templates. |
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| engine | engine to be used for processing templates. Handlebars is the default. |
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| ext | extension to be used for dest files. |
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Left aligned columns
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| Option | Description |
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|:------ |:----------- |
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| data | path to data files to supply the data that will be passed into templates. |
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| engine | engine to be used for processing templates. Handlebars is the default. |
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| ext | extension to be used for dest files. |
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Center aligned columns
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|
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| Option | Description |
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|:------:|:-----------:|
|
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| data | path to data files to supply the data that will be passed into templates. |
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| engine | engine to be used for processing templates. Handlebars is the default. |
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| ext | extension to be used for dest files. |
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### Links
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[link text](http://dev.nodeca.com)
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[link with title](http://nodeca.github.io/pica/demo/ "title text!")
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Autoconverted link https://github.com/nodeca/pica
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### Images
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Like links, Images also have a footnote style syntax
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![Alt text][id]
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With a reference later in the document defining the URL location:
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[id]: https://octodex.github.com/images/dojocat.jpg "The Dojocat"
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Show the image with given size
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### Footnotes
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Footnote 1 link[^first].
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Footnote 2 link[^second].
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Inline footnote^[Text of inline footnote] definition.
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Duplicated footnote reference[^second].
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[^first]: Footnote **can have markup**
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and multiple paragraphs.
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[^second]: Footnote text.
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### Definition Lists
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Term 1
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: Definition 1
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with lazy continuation.
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Term 2 with *inline markup*
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: Definition 2
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{ some code, part of Definition 2 }
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Third paragraph of definition 2.
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_Compact style:_
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Term 1
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~ Definition 1
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Term 2
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~ Definition 2a
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~ Definition 2b
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|
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### Abbreviations
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||
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This is an HTML abbreviation example.
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It converts "HTML", but keeps intact partial entries like "xxxHTMLyyy" and so on.
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*[HTML]: Hyper Text Markup Language
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