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<title>Markdown 备忘清单
&#x26; markdown cheatsheet &#x26; Quick Reference</title>
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<meta description="这是 Markdown 语法的快速参考备忘单。
Markdown 快速参考,为开发人员分享快速参考备忘单。">
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</svg><a aria-hidden="true" tabindex="-1" href="#markdown-备忘清单"><span class="icon icon-link"></span></a>Markdown 备忘清单</h1><div class="wrap-body">
<p>这是 Markdown 语法的快速参考备忘单。</p>
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</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#markdown-快速参考">Markdown 快速参考</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#标题-atx-风格">标题 (atx 风格)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#标题-setext-风格">标题 (setext 风格)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#块引用">块引用</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#无序列表">无序列表</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#有序列表">有序列表</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#链接">链接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#强调">强调</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#水平线">水平线</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#换行">换行</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#代码">代码</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#内联代码">内联代码</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#表格">表格</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#脚注-footnotes">脚注 (Footnotes)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#图片">图片</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#带链接的图片">带链接的图片</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#参考风格">参考风格</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#反斜杠转义">反斜杠转义</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#行内-html-元素">行内 HTML 元素</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#github-相关语法">Github 相关语法</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#代码语法高亮">代码语法高亮</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#任务列表">任务列表</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#删除线">删除线</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#自动链接">自动链接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#提及-和-issues-引用">@提及 和 Issues 引用</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#表情符号">表情符号</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#警告框">警告框</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#脚注">脚注</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#数学公式">数学公式</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#折叠块">折叠块</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#代码块中的差异">代码块中的差异</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#创建-mermaid-图表">创建 Mermaid 图表</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#另见">另见</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="markdown-快速参考"><a aria-hidden="true" tabindex="-1" href="#markdown-快速参考"><span class="icon icon-link"></span></a>Markdown 快速参考</h2><div class="wrap-body">
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="标题-atx-风格"><a aria-hidden="true" tabindex="-1" href="#标题-atx-风格"><span class="icon icon-link"></span></a>标题 (atx 风格)</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token title important"><span class="token punctuation">#</span> h1</span>
</span><span class="code-line"><span class="token title important"><span class="token punctuation">##</span> h2</span>
</span><span class="code-line"><span class="token title important"><span class="token punctuation">###</span> h3</span>
</span><span class="code-line"><span class="token title important"><span class="token punctuation">####</span> h4</span>
</span><span class="code-line"><span class="token title important"><span class="token punctuation">#####</span> h5</span>
</span><span class="code-line"><span class="token title important"><span class="token punctuation">######</span> h6</span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="标题-setext-风格"><a aria-hidden="true" tabindex="-1" href="#标题-setext-风格"><span class="icon icon-link"></span></a>标题 (setext 风格)</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token title important">Header 1
</span></span><span class="code-line"><span class="token title important"><span class="token punctuation">========</span></span>
</span></code></pre>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token title important">Header 2
</span></span><span class="code-line"><span class="token title important"><span class="token punctuation">--------</span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="块引用"><a aria-hidden="true" tabindex="-1" href="#块引用"><span class="icon icon-link"></span></a>块引用</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token blockquote punctuation">></span> 这是一个
</span><span class="code-line"><span class="token blockquote punctuation">></span> 块引用
</span><span class="code-line"><span class="token blockquote punctuation">></span>
</span><span class="code-line"><span class="token blockquote punctuation">> ></span> 嵌套
</span><span class="code-line"><span class="token blockquote punctuation">> ></span> 块引用
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist row-span-3"><div class="wrap-header h3wrap"><h3 id="无序列表"><a aria-hidden="true" tabindex="-1" href="#无序列表"><span class="icon icon-link"></span></a>无序列表</h3><div class="wrap-body">
<!--rehype:wrap-class=row-span-3-->
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">*</span> Item 1
</span><span class="code-line"><span class="token list punctuation">*</span> Item 2
</span><span class="code-line"> <span class="token list punctuation">*</span> item 3a
</span><span class="code-line"> <span class="token list punctuation">*</span> item 3b
</span></code></pre>
<p>或者</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">-</span> Item 1
</span><span class="code-line"><span class="token list punctuation">-</span> Item 2
</span></code></pre>
<p>或者</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">+</span> Item 1
</span><span class="code-line"><span class="token list punctuation">+</span> Item 2
</span></code></pre>
<p>或者<strong>任务</strong>列表</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">-</span> [ ] Checkbox off
</span><span class="code-line"><span class="token list punctuation">-</span> [x] Checkbox on
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="有序列表"><a aria-hidden="true" tabindex="-1" href="#有序列表"><span class="icon icon-link"></span></a>有序列表</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">1.</span> Item 1
</span><span class="code-line"><span class="token list punctuation">2.</span> Item 2
</span><span class="code-line"> a. item 3a
</span><span class="code-line"> b. item 3b
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="链接"><a aria-hidden="true" tabindex="-1" href="#链接"><span class="icon icon-link"></span></a>链接</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token url">[<span class="token content">link</span>](<span class="token url">http://google.com</span>)</span>
</span><span class="code-line">
</span><span class="code-line"><span class="token url">[<span class="token content">link</span>][<span class="token variable">google</span>]</span>
</span><span class="code-line"><span class="token url-reference url"><span class="token punctuation">[</span><span class="token variable">google</span><span class="token punctuation">]</span><span class="token punctuation">:</span> http://google.com</span>
</span><span class="code-line">
</span><span class="code-line">&#x3C;http://google.com>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="强调"><a aria-hidden="true" tabindex="-1" href="#强调"><span class="icon icon-link"></span></a>强调</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token italic"><span class="token punctuation">*</span><span class="token content">斜体</span><span class="token punctuation">*</span></span> <span class="token italic"><span class="token punctuation">_</span><span class="token content">斜体</span><span class="token punctuation">_</span></span> <span class="token bold"><span class="token punctuation">**</span><span class="token content">粗体</span><span class="token punctuation">**</span></span> <span class="token bold"><span class="token punctuation">__</span><span class="token content">粗体</span><span class="token punctuation">__</span></span>
</span><span class="code-line">
</span><span class="code-line"><span class="token code-snippet code keyword">`内联代码`</span> <span class="token strike"><span class="token punctuation">~~</span><span class="token content">删除</span><span class="token punctuation">~~</span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist row-span-2"><div class="wrap-header h3wrap"><h3 id="水平线"><a aria-hidden="true" tabindex="-1" href="#水平线"><span class="icon icon-link"></span></a>水平线</h3><div class="wrap-body">
<!--rehype:wrap-class=row-span-2-->
<p>连字符</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token hr punctuation">---</span>
</span></code></pre>
<p>星号</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token hr punctuation">***</span>
</span></code></pre>
<p>下划线</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">___
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="换行"><a aria-hidden="true" tabindex="-1" href="#换行"><span class="icon icon-link"></span></a>换行</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">在当前行的结尾加 2 个空格··
</span><span class="code-line">这行就会新起一行\
</span><span class="code-line">反斜杠也可以换行
</span></code></pre>
<p>尾部添加两个空格,或者添加 <code>\</code> 反斜杠</p>
</div></div></div><div class="wrap h3body-exist"><div class="wrap-header h3wrap"><h3 id="代码"><a aria-hidden="true" tabindex="-1" href="#代码"><span class="icon icon-link"></span></a>代码</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token code"><span class="token punctuation">```</span><span class="token code-language">javascript</span>
</span></span><span class="code-line"><span class="token code"><span class="token code-block language-javascript"><span class="token console class-name">console</span><span class="token punctuation">.</span><span class="token method function property-access">log</span><span class="token punctuation">(</span><span class="token string">"This is a block code"</span><span class="token punctuation">)</span></span>
</span></span><span class="code-line"><span class="token code"><span class="token punctuation">```</span></span>
</span></code></pre>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">~<span class="token strike"><span class="token punctuation">~~</span><span class="token content">css
</span></span></span><span class="code-line"><span class="token strike"><span class="token content">.button { border: none; }
</span></span></span><span class="code-line"><span class="token strike"><span class="token content"></span><span class="token punctuation">~~</span></span>~
</span></code></pre>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"> 4 空格缩进做一个代码块
</span></code></pre>
<h4 id="内联代码"><a aria-hidden="true" tabindex="-1" href="#内联代码"><span class="icon icon-link"></span></a>内联代码</h4>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token code-snippet code keyword">`Inline code`</span> 周围有反引号
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="表格"><a aria-hidden="true" tabindex="-1" href="#表格"><span class="icon icon-link"></span></a>表格</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token table"><span class="token table-header-row"><span class="token punctuation">|</span><span class="token table-header important"> 左栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 中间栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 右栏 </span><span class="token punctuation">|</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-header-row"></span><span class="token table-line"><span class="token punctuation">|</span> <span class="token punctuation">--------</span> <span class="token punctuation">|</span> <span class="token punctuation">--------</span> <span class="token punctuation">|</span> <span class="token punctuation">-----</span> <span class="token punctuation">|</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-line"></span><span class="token table-data-rows"><span class="token punctuation">|</span><span class="token table-data"> 单元格 1 </span><span class="token punctuation">|</span><span class="token table-data"> 居中 </span><span class="token punctuation">|</span><span class="token table-data"> $1600 </span><span class="token punctuation">|</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-data-rows"><span class="token punctuation">|</span><span class="token table-data"> 单元格 2 </span><span class="token punctuation">|</span><span class="token table-data"> 单元格 3 </span><span class="token punctuation">|</span><span class="token table-data"> $12 </span><span class="token punctuation">|</span>
</span></span></span></code></pre>
<p>简单的风格</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token table"><span class="token table-header-row"><span class="token table-header important">左栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 中间栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 右栏 </span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-header-row"></span><span class="token table-line"><span class="token punctuation">--------</span> <span class="token punctuation">|</span> <span class="token punctuation">--------</span> <span class="token punctuation">|</span> <span class="token punctuation">-----</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-line"></span><span class="token table-data-rows"><span class="token table-data">单元格 1 </span><span class="token punctuation">|</span><span class="token table-data"> 居中 </span><span class="token punctuation">|</span><span class="token table-data"> $1600</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-data-rows"><span class="token table-data">单元格 2 </span><span class="token punctuation">|</span><span class="token table-data"> 单元格 3 </span><span class="token punctuation">|</span><span class="token table-data"> $12 </span>
</span></span></span></code></pre>
<p>增加 <code>:</code> 改变文字对齐方式</p>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token table"><span class="token table-header-row"><span class="token table-header important">左栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 中间栏 </span><span class="token punctuation">|</span><span class="token table-header important"> 右栏 </span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-header-row"></span><span class="token table-line"><span class="token punctuation">:-------</span> <span class="token punctuation">|</span> <span class="token punctuation">:------:</span> <span class="token punctuation">|</span> <span class="token punctuation">-----:</span>
</span></span></span><span class="code-line"><span class="token table"><span class="token table-line"></span><span class="token table-data-rows"><span class="token table-data">左对齐 </span><span class="token punctuation">|</span><span class="token table-data"> 居中 </span><span class="token punctuation">|</span><span class="token table-data"> 右对齐</span>
</span></span></span></code></pre>
<p>Markdown 表格生成器:<a href="https://tableconvert.com/">tableconvert.com</a></p>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="脚注-footnotes"><a aria-hidden="true" tabindex="-1" href="#脚注-footnotes"><span class="icon icon-link"></span></a>脚注 (Footnotes)</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">这是一个简单的脚注[^1]。
</span><span class="code-line">
</span><span class="code-line">一个脚注也可以有多行[^2]。
</span><span class="code-line">
</span><span class="code-line">你也可以使用文字,更贴合你的写作风格[^note]。
</span><span class="code-line">
</span><span class="code-line">[^1]:我的参考。
</span><span class="code-line">[^2]:每个新行都应以 2 个空格为前缀。
</span><span class="code-line"> 这允许你有一个多行的脚注。
</span><span class="code-line">[^note]
</span><span class="code-line"> 推荐使用数字命名脚注,但文本更容易识别和链接。
</span><span class="code-line"> 脚注使用了不同的语法,使用 4 个空格作为新行。
</span></code></pre>
</div></div></div><div class="wrap h3body-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="图片"><a aria-hidden="true" tabindex="-1" href="#图片"><span class="icon icon-link"></span></a>图片</h3><div class="wrap-body">
<!--rehype:wrap-class=col-span-2-->
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token url"><span class="token operator">!</span>[<span class="token content">图片名称</span>](<span class="token url">http://图片网址/images/logo.png</span>)</span>
</span><span class="code-line">
</span><span class="code-line"><span class="token url"><span class="token operator">!</span>[<span class="token content">替代文字</span>](<span class="token url">url</span>)</span>
</span></code></pre>
<h4 id="带链接的图片"><a aria-hidden="true" tabindex="-1" href="#带链接的图片"><span class="icon icon-link"></span></a>带链接的图片</h4>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token url">[<span class="token content">![GitHub Logo</span>](<span class="token url">/images/logo.png</span>)</span>](https://github.com/)
</span><span class="code-line">
</span><span class="code-line"><span class="token url">[<span class="token content">![替代文字</span>](<span class="token url">image_url</span>)</span>](link_url)
</span></code></pre>
<h4 id="参考风格"><a aria-hidden="true" tabindex="-1" href="#参考风格"><span class="icon icon-link"></span></a>参考风格</h4>
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token url"><span class="token operator">!</span>[<span class="token content">替代文字</span>][<span class="token variable">logo</span>]</span>
</span><span class="code-line">
</span><span class="code-line"><span class="token url-reference url"><span class="token punctuation">[</span><span class="token variable">logo</span><span class="token punctuation">]</span><span class="token punctuation">:</span> /images/logo.png <span class="token string">"Logo Title"</span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist row-span-2"><div class="wrap-header h3wrap"><h3 id="反斜杠转义"><a aria-hidden="true" tabindex="-1" href="#反斜杠转义"><span class="icon icon-link"></span></a>反斜杠转义</h3><div class="wrap-body">
<!--rehype:wrap-class=row-span-2-->
<table><thead><tr><th>字符</th><th>转义</th><th>描述</th></tr></thead><tbody><tr><td><pur>\</pur></td><td>\\</td><td>backslash 反斜杠</td></tr><tr><td><pur>`</pur></td><td>\`</td><td>backtick 反引号</td></tr><tr><td><pur>*</pur></td><td>\*</td><td>asterisk 星号</td></tr><tr><td><pur>_</pur></td><td>\_</td><td>underscore 下划线</td></tr><tr><td><pur>{}</pur></td><td>\{}</td><td>curly braces 花括号</td></tr><tr><td><pur>[]</pur></td><td>\[]</td><td>square brackets 方括号</td></tr><tr><td><pur>()</pur></td><td>\()</td><td>parentheses 圆括号</td></tr><tr><td><pur>#</pur></td><td>\#</td><td>hash mark 哈希标记</td></tr><tr><td><pur>+</pur></td><td>\+</td><td>plus sign 加号</td></tr><tr><td><pur>-</pur></td><td>\-</td><td>minus sign (hyphen) 减号(连字符)</td></tr><tr><td><pur>.</pur></td><td>\.</td><td>dot 点</td></tr><tr><td><pur>!</pur></td><td>\!</td><td>exclamation mark 感叹号</td></tr></tbody></table>
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="行内-html-元素"><a aria-hidden="true" tabindex="-1" href="#行内-html-元素"><span class="icon icon-link"></span></a>行内 HTML 元素</h3><div class="wrap-body">
<!--rehype:wrap-class=col-span-2-->
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line">目前只支持部分段内 HTML 元素效果,包括 <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>kbd</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>b</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>i</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>em</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>sup</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>sub</span><span class="token punctuation">></span></span>, <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>br</span><span class="token punctuation">></span></span>
</span></code></pre>
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="github-相关语法"><a aria-hidden="true" tabindex="-1" href="#github-相关语法"><span class="icon icon-link"></span></a>Github 相关语法</h2><div class="wrap-body">
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="代码语法高亮"><a aria-hidden="true" tabindex="-1" href="#代码语法高亮"><span class="icon icon-link"></span></a>代码语法高亮</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token code"><span class="token punctuation">```</span><span class="token code-language">javascript</span>
</span></span><span class="code-line"><span class="token code"><span class="token code-block language-javascript"><span class="token keyword">function</span> <span class="token function">hello</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-javascript"> <span class="token console class-name">console</span><span class="token punctuation">.</span><span class="token method function property-access">log</span><span class="token punctuation">(</span><span class="token string">"Hello, GitHub!"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-javascript"><span class="token punctuation">}</span></span>
</span></span><span class="code-line"><span class="token code"><span class="token punctuation">```</span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="任务列表"><a aria-hidden="true" tabindex="-1" href="#任务列表"><span class="icon icon-link"></span></a>任务列表</h3><div class="wrap-body">
<!--rehype:wrap-class=col-span-2-->
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token list punctuation">-</span> [x] 已完成的任务
</span><span class="code-line"><span class="token list punctuation">-</span> [ ] 未完成的任务
</span><span class="code-line"><span class="token list punctuation">-</span> [x] @mentions, #refs, [链接](), <span class="token bold"><span class="token punctuation">**</span><span class="token content">格式</span><span class="token punctuation">**</span></span>, 和 <span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>del</span><span class="token punctuation">></span></span>标签<span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;/</span>del</span><span class="token punctuation">></span></span> 支持
</span><span class="code-line"><span class="token list punctuation">-</span> [x] 列表语法必填 (任何无序或有序列表支持)
</span><span class="code-line"><span class="token list punctuation">-</span> [x] 这是一个完整项目
</span><span class="code-line"><span class="token list punctuation">-</span> [ ] 这是一个未完成项目
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="删除线"><a aria-hidden="true" tabindex="-1" href="#删除线"><span class="icon icon-link"></span></a>删除线</h3><div class="wrap-body">
<pre class="wrap-text"><code class="language-markdown code-highlight"><span class="code-line">任何用两个波浪号包裹的词语 (例如 <span class="token strike"><span class="token punctuation">~~</span><span class="token content">这样</span><span class="token punctuation">~~</span></span>) 都会出现删除线。
</span></code></pre>
<!--rehype:className=wrap-text-->
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="自动链接"><a aria-hidden="true" tabindex="-1" href="#自动链接"><span class="icon icon-link"></span></a>自动链接</h3><div class="wrap-body">
<pre class="wrap-text"><code class="language-markdown code-highlight"><span class="code-line">http://www.github.com/ 和 https://help.github.com/ 会自动转换为链接。
</span></code></pre>
<!--rehype:className=wrap-text-->
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="提及-和-issues-引用"><a aria-hidden="true" tabindex="-1" href="#提及-和-issues-引用"><span class="icon icon-link"></span></a>@提及 和 Issues 引用</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">@username 会通知用户来查看评论
</span><span class="code-line"><span class="token title important"><span class="token punctuation">#</span>123 会引用仓库中的 issue 或 pull request</span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="表情符号"><a aria-hidden="true" tabindex="-1" href="#表情符号"><span class="icon icon-link"></span></a>表情符号</h3><div class="wrap-body">
<pre class="wrap-text"><code class="language-markdown code-highlight"><span class="code-line">GitHub 支持表情符号! :+1: :sparkles: :camel: :tada:
</span><span class="code-line">:rocket: :metal: :octocat:
</span></code></pre>
<!--rehype:className=wrap-text-->
</div></div></div><div class="wrap h3body-not-exist row-span-2"><div class="wrap-header h3wrap"><h3 id="警告框"><a aria-hidden="true" tabindex="-1" href="#警告框"><span class="icon icon-link"></span></a>警告框</h3><div class="wrap-body">
<!--rehype:wrap-class=row-span-2-->
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token blockquote punctuation">></span> [!NOTE]
</span><span class="code-line"><span class="token blockquote punctuation">></span> 有用的信息,用户需要知道,即使浏览时也是如此。
</span><span class="code-line">
</span><span class="code-line"><span class="token blockquote punctuation">></span> [!TIP]
</span><span class="code-line"><span class="token blockquote punctuation">></span> 有用的建议,可以帮助用户做得更好。
</span><span class="code-line">
</span><span class="code-line"><span class="token blockquote punctuation">></span> [!IMPORTANT]
</span><span class="code-line"><span class="token blockquote punctuation">></span> 用户成功所需的关键信息。
</span><span class="code-line">
</span><span class="code-line"><span class="token blockquote punctuation">></span> [!WARNING]
</span><span class="code-line"><span class="token blockquote punctuation">></span> 用户需要立即关注的重要内容,以避免问题。
</span><span class="code-line">
</span><span class="code-line"><span class="token blockquote punctuation">></span> [!CAUTION]
</span><span class="code-line"><span class="token blockquote punctuation">></span> 有关可能有风险或负面结果的行为的建议。
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="脚注"><a aria-hidden="true" tabindex="-1" href="#脚注"><span class="icon icon-link"></span></a>脚注</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">一个简单的脚注[^1],一个更长的脚注[^bignote]。
</span><span class="code-line">
</span><span class="code-line"><span class="token url-reference url"><span class="token punctuation">[</span><span class="token variable">^1</span><span class="token punctuation">]</span><span class="token punctuation">:</span> 这是第一个脚注。</span>
</span><span class="code-line"><span class="token url-reference url"><span class="token punctuation">[</span><span class="token variable">^bignote</span><span class="token punctuation">]</span><span class="token punctuation">:</span> 这里是一个有多行的脚注。</span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="数学公式"><a aria-hidden="true" tabindex="-1" href="#数学公式"><span class="icon icon-link"></span></a>数学公式</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line">行内数学:$\sqrt{3x-1}+(1+x)^2$
</span><span class="code-line">
</span><span class="code-line">块级数学:
</span><span class="code-line">
</span><span class="code-line"><span class="token code"><span class="token punctuation">```</span><span class="token code-language">math</span>
</span></span><span class="code-line"><span class="token code"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><msup><mrow><mo fence="true">(</mo><msubsup><mo></mo><mrow><mi>k</mi><mo>=</mo><mn>1</mn></mrow><mi>n</mi></msubsup><msub><mi>a</mi><mi>k</mi></msub><msub><mi>b</mi><mi>k</mi></msub><mo fence="true">)</mo></mrow><mn>2</mn></msup><mo></mo><mrow><mo fence="true">(</mo><msubsup><mo></mo><mrow><mi>k</mi><mo>=</mo><mn>1</mn></mrow><mi>n</mi></msubsup><msubsup><mi>a</mi><mi>k</mi><mn>2</mn></msubsup><mo fence="true">)</mo></mrow><mrow><mo fence="true">(</mo><msubsup><mo></mo><mrow><mi>k</mi><mo>=</mo><mn>1</mn></mrow><mi>n</mi></msubsup><msubsup><mi>b</mi><mi>k</mi><mn>2</mn></msubsup><mo fence="true">)</mo></mrow></mrow><annotation encoding="application/x-tex">\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1.308em;vertical-align:-0.2997em;"></span><span class="minner"><span class="minner"><span class="mopen delimcenter" style="top:0em;">(</span><span class="mop"><span class="mop op-symbol small-op" style="position:relative;top:0em;"></span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.8043em;"><span style="top:-2.4003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span><span class="mrel mtight">=</span><span class="mord mtight">1</span></span></span></span><span style="top:-3.2029em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight">n</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.2997em;"><span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.1667em;"></span><span class="mord"><span class="mord mathnormal">a</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.3361em;"><span style="top:-2.55em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mord"><span class="mord mathnormal">b</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.3361em;"><span style="top:-2.55em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mclose delimcenter" style="top:0em;">)</span></span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:1.0083em;"><span style="top:-3.2572em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight">2</span></span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel"></span><span class="mspace" style="margin-right:0.2778em;"></span></span><span class="base"><span class="strut" style="height:1.2em;vertical-align:-0.35em;"></span><span class="minner"><span class="mopen delimcenter" style="top:0em;"><span class="delimsizing size1">(</span></span><span class="mop"><span class="mop op-symbol small-op" style="position:relative;top:0em;"></span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.8043em;"><span style="top:-2.4003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span><span class="mrel mtight">=</span><span class="mord mtight">1</span></span></span></span><span style="top:-3.2029em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight">n</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.2997em;"><span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.1667em;"></span><span class="mord"><span class="mord mathnormal">a</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.8141em;"><span style="top:-2.4169em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span></span></span><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight">2</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.2831em;"><span></span></span></span></span></span></span><span class="mclose delimcenter" style="top:0em;"><span class="delimsizing size1">)</span></span></span><span class="mspace" style="margin-right:0.1667em;"></span><span class="minner"><span class="mopen delimcenter" style="top:0em;"><span class="delimsizing size1">(</span></span><span class="mop"><span class="mop op-symbol small-op" style="position:relative;top:0em;"></span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.8043em;"><span style="top:-2.4003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span><span class="mrel mtight">=</span><span class="mord mtight">1</span></span></span></span><span style="top:-3.2029em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight">n</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.2997em;"><span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.1667em;"></span><span class="mord"><span class="mord mathnormal">b</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.8141em;"><span style="top:-2.4169em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight" style="margin-right:0.03148em;">k</span></span></span><span style="top:-3.063em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight">2</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.2831em;"><span></span></span></span></span></span></span><span class="mclose delimcenter" style="top:0em;"><span class="delimsizing size1">)</span></span></span></span></span></span>
</span></span><span class="code-line"><span class="token code"><span class="token punctuation">```</span></span>
</span></code></pre>
<p>GitHub 的数学呈现功能使用 MathJax请参阅 <a href="http://docs.mathjax.org/en/latest/input/tex/index.html#tex-and-latex-support">MathJax</a> 文档和 <a href="https://mathjax.github.io/MathJax-a11y/docs/#reader-guide">MathJax</a> 辅助功能扩展文档。</p>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="折叠块"><a aria-hidden="true" tabindex="-1" href="#折叠块"><span class="icon icon-link"></span></a>折叠块</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>details</span><span class="token punctuation">></span></span>
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;</span>summary</span><span class="token punctuation">></span></span>点击展开更多详情<span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;/</span>summary</span><span class="token punctuation">></span></span>
</span><span class="code-line">
</span><span class="code-line">这是折叠的内容。
</span><span class="code-line">
</span><span class="code-line"><span class="token list punctuation">-</span> 代码块
</span><span class="code-line"><span class="token list punctuation">-</span> 其他任何 Markdown 内容
</span><span class="code-line">
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation">&#x3C;/</span>details</span><span class="token punctuation">></span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="代码块中的差异"><a aria-hidden="true" tabindex="-1" href="#代码块中的差异"><span class="icon icon-link"></span></a>代码块中的差异</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token code"><span class="token punctuation">```</span><span class="token code-language">diff</span>
</span></span><span class="code-line"><span class="token code"><span class="token code-block language-diff">function addTwoNumbers (num1, num2) {
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-diff"><span class="token deleted-sign deleted"><span class="token prefix deleted">-</span><span class="token line"> return 1 + 2
</span></span></span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-diff"><span class="token deleted-sign deleted"><span class="token line"></span></span><span class="token inserted-sign inserted"><span class="token prefix inserted">+</span><span class="token line"> return num1 + num2
</span></span></span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-diff"><span class="token inserted-sign inserted"><span class="token line"></span></span>}</span>
</span></span><span class="code-line"><span class="token code"><span class="token punctuation">```</span></span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="创建-mermaid-图表"><a aria-hidden="true" tabindex="-1" href="#创建-mermaid-图表"><span class="icon icon-link"></span></a>创建 Mermaid 图表</h3><div class="wrap-body">
<pre class="language-markdown"><code class="language-markdown code-highlight"><span class="code-line"><span class="token code"><span class="token punctuation">```</span><span class="token code-language">mermaid</span>
</span></span><span class="code-line"><span class="token code"><span class="token code-block language-mermaid"><span class="token keyword">graph</span> TD<span class="token punctuation">;</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-mermaid"> A<span class="token arrow operator">--></span>B<span class="token punctuation">;</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-mermaid"> A<span class="token arrow operator">--></span>C<span class="token punctuation">;</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-mermaid"> B<span class="token arrow operator">--></span>D<span class="token punctuation">;</span>
</span></span></span><span class="code-line"><span class="token code"><span class="token code-block language-mermaid"> C<span class="token arrow operator">--></span>D<span class="token punctuation">;</span></span>
</span></span><span class="code-line"><span class="token code"><span class="token punctuation">```</span></span>
</span></code></pre>
<p>有关语法文档,请参阅 <a href="https://mermaid.js.org">Mermaid 文档</a></p>
</div></div></div></div></div><div class="wrap h2body-not-exist"><div class="wrap-header h2wrap"><h2 id="另见"><a aria-hidden="true" tabindex="-1" href="#另见"><span class="icon icon-link"></span></a>另见</h2><div class="wrap-body">
<ul>
<li><a href="https://github.github.com/gfm/">GitHub 风格的 Markdown 规范</a> <em>(github.com)</em></li>
<li><a href="https://docs.github.com/zh/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax">GitHub 基本写作和格式语法</a> <em>(docs.github.com)</em></li>
</ul>
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