说明

Examples

It's very easy to make some words **bold** and other words *italic* with Markdown. You can even [link to Google!](http://google.com)

It’s very easy to make some words bold and other words italic with Markdown. You can even link to Google!

Syntax guide

Headers

# This is an <h1> tag
## This is an <h2> tag
###### This is an <h6> tag

Emphasis

*This text will be italic*
_This will also be italic_

**This text will be bold**
__This will also be bold__

_You **can** combine them_

Lists

Unordered
* Item 1
* Item 2
   * Item 2a
   * Item 2b
Ordered
1. Item 1
1. Item 2
1. Item 3
   1. Item 3a
   1. Item 3b

Images

![GitHub Logo](/images/logo.png)
Format: ![Alt Text](url)

Links

http://github.com - automatic!
[GitHub](http://github.com)

Blockquotes

As Kanye West said:

> We're living the future so
> the present is our past.

Inline code

I think you should use an <addr> element here instead.

Footnote

Here is a footnote reference,¹ and another.²

Here is an inline note.^[Inlines notes are easier to write, since you don’t have to pick an identifier and move down to type the note.]

Footnote Syntax

Advantage

KaTeX

Use the katex liquid tag for LaTeX math equations like so:

{ % katex % }
\Gamma(z) = \int_0^1\infty t^{z-1}e^{-t}dt\,.
{ % endkatex % }

$\Gamma(z) = \int_0^1\infty t^{z-1}e^{-t}dt\,.$

If you want the equation to be rendered in display mode (on its own line, centered, large symbols), just pass in the display parameter:

{ % katex display % }
\Gamma(z) = \int_0^1\infty t^{z-1}e^{-t}dt\,.
{ % endkatex % }

More KaTeX examples

{ % katex % }
c = \pm\sqrt{a^2 + b^2}
{ % endkatex % }

$c = \pm\sqrt{a^2 + b^2}$

{ % katex display % }
c = \pm\sqrt{a^2 + b^2}
{ % endkatex % }

$c = \pm\sqrt{a^2 + b^2}$

UML diagram

```mermaid
sequenceDiagram
Alice ->> Bob: Hello Bob, how are you?
Bob-->>John: How about you John?
Bob--x Alice: I am good thanks!
Bob-x John: I am good thanks!
Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.

Bob-->Alice: Checking with John...
Alice->John: Yes... John, how are you?
`` `

sequenceDiagram
Alice ->> Bob: Hello Bob, how are you?
Bob-->>John: How about you John?
Bob--x Alice: I am good thanks!
Bob-x John: I am good thanks!
Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.

Bob-->Alice: Checking with John...
Alice->John: Yes... John, how are you?

Flow chart

```mermaid
graph LR
A[Square Rect] -- Link text --> B((Circle))
A --> C(Round Rect)
B --> D{Rhombus}
C --> D
`` `

graph LR
A[Square Rect] -- Link text --> B((Circle))
A --> C(Round Rect)
B --> D{Rhombus}
C --> D

GitHub Flavored Markdown

GitHub.com uses its own version of the Markdown syntax that provides an additional set of useful features, many of which make it easier to work with content on GitHub.com.

Note that some features of GitHub Flavored Markdown are only available in the descriptions and comments of Issues and Pull Requests. These include @mentions as well as references to SHA-1 hashes, Issues, and Pull Requests. Task Lists are also available in Gist comments and in Gist Markdown files.

Syntax highlighting

Here’s an example of how you can use syntax highlighting with GitHub Flavored Markdown:

```javascript
function fancyAlert(arg) {
  if(arg) {
    $.facebox({div:'#foo'})
  }
}
`` `

You can also simply indent your code by four spaces:

    function fancyAlert(arg) {
      if(arg) {
        $.facebox({div:'#foo'})
      }
    }

Here’s an example of Python code without syntax highlighting:

def foo():
    if not bar:
        return True

Task Lists

- [x] @mentions, #refs, [links](), **formatting**, and <del>tags</del> supported
- [x] list syntax required (any unordered or ordered list supported)
- [x] this is a complete item
- [ ] this is an incomplete item

If you include a task list in the first comment of an Issue, you will get a handy progress indicator in your issue list. It also works in Pull Requests!

Tables

You can create tables by assembling a list of words and dividing them with hyphens - (for the first row), and then separating each column with a pipe |:

First Header | Second Header
------------ | -------------
Content from cell 1 | Content from cell 2
Content in the first column | Content in the second column

SHA references

Any reference to a commit’s SHA-1 hash will be automatically converted into a link to that commit on GitHub.

16c999e8c71134401a78d4d46435517b2271d6ac
mojombo@16c999e8c71134401a78d4d46435517b2271d6ac
mojombo/github-flavored-markdown@16c999e8c71134401a78d4d46435517b2271d6ac

Issue references within a repository

Any number that refers to an Issue or Pull Request will be automatically converted into a link.

#1
mojombo#1
mojombo/github-flavored-markdown#1

Username @mentions

Typing an @ symbol, followed by a username, will notify that person to come and view the comment. This is called an @mention, because you’re mentioning the individual. You can also @mention teams within an organization.

Automatic linking for URLs

Any URL (like http://www.github.com/) will be automatically converted into a clickable link.

Strikethrough

Any word wrapped with two tildes (like ~~this~~ this) will appear crossed out.

Emoji

To see a list of every image we support, check out the Emoji Cheat Sheet.

Resources

• https://mdp.tylingsoft.com/#fnref1
• https://support.typora.io/Draw-Diagrams-With-Markdown/

• http://flowchart.js.org/