文章标题

代码块

代码块语法遵循标准markdown代码，例如：

@requires_authorization
def somefunc(param1='', param2=0):
    '''A docstring'''
    if param1 > param2: # interesting
        print 'Greater'
    return (param2 - param1 + 1) or None
class SomeClass:
    pass
>>> message = '''interpreter
... prompt'''

脚注

生成一个脚注1.

目录

用 [TOC]来生成目录：

• • • 代码块
    • 脚注
    • 目录
    • 数学公式
    • UML 图
  • 离线写博客
  • 浏览器兼容

数学公式

使用MathJax渲染LaTex 数学公式，详见math.stackexchange.com.

• 行内公式，数学公式为：<nobr><span class="math" id="MathJax-Span-1" style="width: 13.35em; display: inline-block;"><span style="display: inline-block; position: relative; width: 10.84em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.581em, 1000em, 2.906em, -0.463em); top: -2.493em; left: 0em;"><span class="mrow" id="MathJax-Span-2"><span class="mi" id="MathJax-Span-3" style="font-family: MathJax_Main;">Γ</span><span class="mo" id="MathJax-Span-4" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-5" style="font-family: MathJax_Math; font-style: italic;">n</span><span class="mo" id="MathJax-Span-6" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-7" style="font-family: MathJax_Main; padding-left: 0.278em;">=</span><span class="mo" id="MathJax-Span-8" style="font-family: MathJax_Main; padding-left: 0.278em;">(</span><span class="mi" id="MathJax-Span-9" style="font-family: MathJax_Math; font-style: italic;">n</span><span class="mo" id="MathJax-Span-10" style="font-family: MathJax_Main; padding-left: 0.222em;">−</span><span class="mn" id="MathJax-Span-11" style="font-family: MathJax_Main; padding-left: 0.222em;">1</span><span class="mo" id="MathJax-Span-12" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-13" style="font-family: MathJax_Main;">!</span><span class="mspace" id="MathJax-Span-14" style="height: 0em; vertical-align: 0em; width: 1em; display: inline-block; overflow: hidden;"></span><span class="mi" id="MathJax-Span-15" style="font-family: MathJax_Main;">∀</span><span class="mi" id="MathJax-Span-16" style="font-family: MathJax_Math; font-style: italic;">n</span><span class="mo" id="MathJax-Span-17" style="font-family: MathJax_Main; padding-left: 0.278em;">∈</span><span class="texatom" id="MathJax-Span-18" style="padding-left: 0.278em;"><span class="mrow" id="MathJax-Span-19"><span class="mi" id="MathJax-Span-20" style="font-family: MathJax_AMS;">N</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.493em;"></span></span></span><span style="border-left: 0em solid; display: inline-block; overflow: hidden; width: 0px; height: 1.363em; vertical-align: -0.374em;"></span></span></nobr><script type="math/tex" id="MathJax-Element-1">\Gamma(n) = (n-1)!\quad\forall n\in\mathbb N</script>。
• 块级公式：

<nobr><span class="math" id="MathJax-Span-21" style="width: 11.35em; display: inline-block;"><span style="display: inline-block; position: relative; width: 9.214em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(0.442em, 1000em, 3.189em, -0.453em); top: -2.331em; left: 0em;"><span class="mrow" id="MathJax-Span-22"><span class="mi" id="MathJax-Span-23" style="font-family: MathJax_Math; font-style: italic;">x</span><span class="mo" id="MathJax-Span-24" style="font-family: MathJax_Main; padding-left: 0.278em;">=</span><span class="mstyle" id="MathJax-Span-25" style="padding-left: 0.278em;"><span class="mrow" id="MathJax-Span-26"><span class="mfrac" id="MathJax-Span-27"><span style="display: inline-block; position: relative; width: 7.058em; height: 0px; margin-right: 0.12em; margin-left: 0.12em;"><span style="position: absolute; clip: rect(1.118em, 1000em, 2.644em, -0.404em); top: -3.007em; left: 50%; margin-left: -3.469em;"><span class="mrow" id="MathJax-Span-28"><span class="mo" id="MathJax-Span-29" style="font-family: MathJax_Main;">−</span><span class="mi" id="MathJax-Span-30" style="font-family: MathJax_Math; font-style: italic;">b</span><span class="mo" id="MathJax-Span-31" style="font-family: MathJax_Main; padding-left: 0.222em;">±</span><span class="msqrt" id="MathJax-Span-32" style="padding-left: 0.222em;"><span style="display: inline-block; position: relative; width: 4.524em; height: 0px;"><span style="position: absolute; clip: rect(1.276em, 1000em, 2.504em, -0.448em); top: -2.331em; left: 0.976em;"><span class="mrow" id="MathJax-Span-33"><span class="msubsup" id="MathJax-Span-34"><span style="display: inline-block; position: relative; width: 0.834em; height: 0px;"><span style="position: absolute; clip: rect(1.474em, 1000em, 2.504em, -0.448em); top: -2.331em; left: 0em;"><span class="mi" id="MathJax-Span-35" style="font-family: MathJax_Math; font-style: italic;">b</span><span style="display: inline-block; width: 0px; height: 2.331em;"></span></span><span style="position: absolute; top: -2.697em; left: 0.434em;"><span class="mn" id="MathJax-Span-36" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.276em;"></span></span></span></span><span class="mo" id="MathJax-Span-37" style="font-family: MathJax_Main; padding-left: 0.222em;">−</span><span class="mn" id="MathJax-Span-38" style="font-family: MathJax_Main; padding-left: 0.222em;">4</span><span class="mi" id="MathJax-Span-39" style="font-family: MathJax_Math; font-style: italic;">a</span><span class="mi" id="MathJax-Span-40" style="font-family: MathJax_Math; font-style: italic;">c</span></span><span style="display: inline-block; width: 0px; height: 2.331em;"></span></span><span style="position: absolute; clip: rect(3.578em, 1000em, 4.043em, -0.488em); top: -4.79em; left: 0.976em;"><span style="display: inline-block; position: relative; width: 3.548em; height: 0px;"><span style="position: absolute; font-family: MathJax_Main; top: -4.011em; left: -0.084em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="position: absolute; font-family: MathJax_Main; top: -4.011em; left: 2.854em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.011em; left: 0.385em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.011em; left: 0.879em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.011em; left: 1.373em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.011em; left: 1.866em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.011em; left: 2.36em;">−<span style="display: inline-block; width: 0px; height: 4.011em;"></span></span></span><span style="display: inline-block; width: 0px; height: 4.011em;"></span></span><span style="position: absolute; clip: rect(2.998em, 1000em, 4.523em, -0.377em); top: -4.21em; left: 0em;"><span style="font-family: MathJax_Size1;">√</span><span style="display: inline-block; width: 0px; height: 4.011em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.331em;"></span></span><span style="position: absolute; clip: rect(1.502em, 1000em, 2.503em, -0.438em); top: -1.645em; left: 50%; margin-left: -0.515em;"><span class="mrow" id="MathJax-Span-41"><span class="mn" id="MathJax-Span-42" style="font-family: MathJax_Main;">2</span><span class="mi" id="MathJax-Span-43" style="font-family: MathJax_Math; font-style: italic;">a</span></span><span style="display: inline-block; width: 0px; height: 2.331em;"></span></span><span style="position: absolute; clip: rect(0.854em, 1000em, 1.247em, -0.488em); top: -1.304em; left: 0em;"><span style="border-left: 7.058em solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0em;"></span><span style="display: inline-block; width: 0px; height: 1.084em;"></span></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.331em;"></span></span></span><span style="border-left: 0em solid; display: inline-block; overflow: hidden; width: 0px; height: 3.113em; vertical-align: -0.923em;"></span></span></nobr>

<script type="math/tex; mode=display" id="MathJax-Element-2"> x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} </script>

更多LaTex语法请参考 这儿.

UML 图:

可以渲染序列图：

Created with Raphaël 2.1.0张三张三李四李四嘿，小四儿, 写博客了没?李四愣了一下，说：忙得吐血，哪有时间写。

或者流程图：

Created with Raphaël 2.1.0开始我的操作确认？结束yesno

• 关于 序列图 语法，参考 这儿,
• 关于 流程图 语法，参考 这儿.

离线写博客

即使用户在没有网络的情况下，也可以通过本编辑器离线写博客（直接在曾经使用过的浏览器中输入write.blog.csdn.net/mdeditor即可。Markdown编辑器使用浏览器离线存储将内容保存在本地。

用户写博客的过程中，内容实时保存在浏览器缓存中，在用户关闭浏览器或者其它异常情况下，内容不会丢失。用户再次打开浏览器时，会显示上次用户正在编辑的没有发表的内容。

博客发表后，本地缓存将被删除。　

用户可以选择 把正在写的博客保存到服务器草稿箱，即使换浏览器或者清除缓存，内容也不会丢失。

注意：虽然浏览器存储大部分时候都比较可靠，但为了您的数据安全，在联网后，请务必及时发表或者保存到服务器草稿箱。

浏览器兼容

1. 目前，本编辑器对Chrome浏览器支持最为完整。建议大家使用较新版本的Chrome。
2. IE９以下不支持
3. IE９，１０，１１存在以下问题
   
   1. 不支持离线功能
   2. IE9不支持文件导入导出
   3. IE10不支持拖拽文件导入

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1. 这里是 脚注 的 内容. ↩

<script type="text/javascript"> $(function () { $('pre.prettyprint code').each(function () { var lines = $(this).text().split('\n').length; var $numbering = $('<ul/>').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i <= lines; i++) { $numbering.append($('<li/>').text(i)); }; $numbering.fadeIn(1700); }); }); </script>