137 lines
412 KiB
HTML
137 lines
412 KiB
HTML
|
<!DOCTYPE html>
|
|||
|
|
<html><head><title>JWT 鉴权</title><meta charSet="utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta property="og:title" content="JWT 鉴权"/><meta property="og:description" content="JWT 鉴权."/><meta property="og:image" content="https://wiki.7wate.com/static/og-image.png"/><meta property="og:width" content="1200"/><meta property="og:height" content="675"/><link rel="icon" href="../../../../static/icon.png"/><meta name="description" content="JWT 鉴权."/><meta name="generator" content="Quartz"/><link rel="preconnect" href="https://fonts.googleapis.com"/><link rel="preconnect" href="https://fonts.gstatic.com"/><script async src="https://umami.7wate.com/script.js" data-website-id="c061efdc-95dd-4d21-9d04-a1ffda0a85b9"></script><script>
|
|||
|
|
var _hmt = _hmt || [];
|
|||
|
|
(function() {
|
|||
|
|
var hm = document.createElement("script");
|
|||
|
|
hm.src = "https://hm.baidu.com/hm.js?94d8ccb156eb7c65abf317e6e01cdba9";
|
|||
|
|
var s = document.getElementsByTagName("script")[0];
|
|||
|
|
s.parentNode.insertBefore(hm, s);
|
|||
|
|
})();
|
|||
|
|
</script><script async src="https://www.googletagmanager.com/gtag/js?id=G-MHMEL0F832"></script><script>
|
|||
|
|
(function() {
|
|||
|
|
window.dataLayer = window.dataLayer || [];
|
|||
|
|
function gtag() {
|
|||
|
|
window.dataLayer.push(arguments);
|
|||
|
|
}
|
|||
|
|
gtag('js', new Date());
|
|||
|
|
gtag('config', 'G-MHMEL0F832');
|
|||
|
|
})();
|
|||
|
|
</script><link href="../../../../index.css" rel="stylesheet" type="text/css" spa-preserve/><link href="https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css" rel="stylesheet" type="text/css" spa-preserve/><link href="https://fonts.googleapis.com/css2?family=IBM Plex Mono&family=Schibsted Grotesk:wght@400;700&family=Source Sans Pro:ital,wght@0,400;0,600;1,400;1,600&display=swap" rel="stylesheet" type="text/css" spa-preserve/><script src="../../../../prescript.js" type="application/javascript" spa-preserve></script><script type="application/javascript" spa-preserve>const fetchData = fetch(`../../../../static/contentIndex.json`).then(data => data.json())</script></head><body data-slug="Tech/computer-security/用户安全/用户鉴权/JWT（JSON-Web-Token）鉴权"><div id="quartz-root" class="page"><div id="quartz-body"><div class="left sidebar"><h1 class="page-title "><a href="../../../..">📚 X·Eden</a></h1><div class="spacer mobile-only"></div><div class="search "><div id="search-icon"><p>Search</p><div></div><svg tabIndex="0" aria-labelledby="title desc" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 19.9 19.7"><title id="title">Search</title><desc id="desc">Search</desc><g class="search-path" fill="none"><path stroke-linecap="square" d="M18.5 18.3l-5.4-5.4"></path><circle cx="8" cy="8" r="7"></circle></g></svg></div><div id="search-container"><div id="search-space"><input autocomplete="off" id="search-bar" name="search" type="text" aria-label="Search for something" placeholder="Search for something"/><div id="results-container"></div></div></div></div><div class="darkmode "><input class="toggle" id="darkmode-toggle" type="checkbox" tabIndex="-1"/><label id="toggle-label-light" for="darkmode-toggle" tabIndex="-1"><svg xmlns="http://www.w3.org/2000/svg" xmlnsXlink="http://www.w3.org/1999/xlink" version="1.1" id="dayIcon" x="0px" y="0px" viewBox="0 0 35 35" style="enable-background:new 0 0 35 35;" xmlSpace="preserve"><title>Light mode</title><path d="M6,17.5C6,16.672,5.328,16,4.5,16h-3C0.672,16,0,16.672,0,17.5 S0.672,19,1.5,19h3C5.328,19,6,18.328,6,17.5z M7.5,26c-0.414,0-0.789,0.168-1.061,0.439l-2,2C4.168,28.711,4,29.086,4,29.5 C4,30.328,4.671,31,5.5,31c0.414,0,0.789-0.168,1.06-0.44l2-2C8.832,28.289,9,27.914,9,27.5C9,26.672,8.329,26,7.5,26z M17.5,6 C18.329,6,19,5.328,19,4.5v-3C19,0.672,18.329,0,17.5,0S16,0.672,16,1.5v3C16,5.328,16.671,6,17.5,6z M27.5,9 c0.414,0,0.789-0.168,1.06-0.439l2-2C30.832,6.289,31,5.914,31,5.5C31,4.672,30.329,4,29.5,4c-0.414,0-0.789,0.168-1.061,0.44 l-2,2C26.168,6.711,26,7.086,26,7.5C26,8.328,26.671,9,27.5,9z M6.439,8.561C6.711,8.832,7.086,9,7.5,9C8.328,9,9,8.328,9,7.5 c0-0.414-0.168-0.789-0.439-1.061l-2-2C6.289,4.168,5.914,4,5.5,4C4.672,4,4,4.672,4,5.5c0,0.414,0.168,0.789,0.439,1.06 L6.439,8.561z M33.5,16h-3c-0.828,0-1.5,0.672-1.5,1.5s0.672,1.5,1.5,1.5h3c0.828,0,1.5-0.672,1.5-1.5S34.328,16,33.5,16z M28.561,26.439C28.289,26.168,27.914,26,27.5,26c-0.828,0-1.5,0.672-1.5,1.5c0,0.414,0.168,0.789,0.439,1.06l2,2 C28.711,30.832,29.086,31,29.5,31c0.828,0,1.5-0.672,1.5-1.5c0-0.414-0.168-0.789-0.439-1.061L28.561,26.439z M17.5,29 c-0.829,0-1.5,0.672-1.5,1.5v3c0,0.828,0.671,1.5,1.5,1.5s1.5-0.672,1.5-1.5v-3C19,29.672,18.329,29,17.5,29z M17.5,7 C11.71,7,7,11.71,7,17.5S11.71,28,17.5,28S28,23.29,28,17.5S23.29,7,17.5,7z M17.5,25c-4.136,0-7.5-3.364-7.5-7.5 c0-4.136,3.364-7.5,7.5-7.5c4.136,0,7.5,3.364,7.5,7.5C25,21.636,21.636,25,17.5,25z"></path></svg></label><label id="toggle-label-dark" for="darkmode-toggle" tabIndex="-1"><svg xmlns="http://www.w3.org/2000/svg" xmlnsXlink="http://www.w3.org/1999/xlink" version="1.1" id="nightIcon" x="0px" y="0px" viewBox="0 0 100 100" style="enable-background='new 0 0 100 100'" xmlSpace="preserve"><title>Dark mode</title><path d="M96.76,66.458c-0.853-0.852-2.15-1.064-3.23-0.534c-6.063,2.991-12.858,4.571-19.655,4.571 C62.022,70.495,50.88,65.88,42.5,57.5C29.043,44.043,25.658,23.536,34.076,6.47c0.532-1.08,0.318-2.379-0.534-3.23 c-0.851-0.852-2.15-1.064-3.23-0.534c-4.918,2.427-9.375,5.619-13.246,9.491c-9.44
|
|||
|
|
<p>通过第三节，我们知道了 Token 的使用方式以及组成，我们不难发现，服务端验证客户端发送过来的 Token 时，还需要查询数据库获取用户基本信息，然后验证 Token 是否有效；这样每次请求验证都要查询数据库，增加了查库带来的延迟等性能消耗。</p>
|
|||
|
|
<p><strong>那么这时候业界常用的 JWT 就应运而生了！！！</strong></p>
|
|||
|
|
<h3 id="jwt-的定义">JWT 的定义<a aria-hidden="true" tabindex="-1" href="#jwt-的定义" class="internal"> §</a></h3>
|
|||
|
|
<p>JWT 是 Auth0 提出的通过对 JSON 进行加密签名来实现授权验证的方案。</p>
|
|||
|
|
<p>就是登录成功后将相关用户信息组成 JSON 对象，然后对这个对象进行某种方式的加密，返回给客户端； 客户端在下次请求时带上这个 Token； 服务端再收到请求时校验 token 合法性，其实也就是在校验请求的合法性。</p>
|
|||
|
|
<h3 id="jwt-的组成">JWT 的组成<a aria-hidden="true" tabindex="-1" href="#jwt-的组成" class="internal"> §</a></h3>
|
|||
|
|
<p>JWT 由三部分组成：<strong>Header 头部</strong>、<strong>Payload 负载</strong>和 <strong>Signature 签名</strong>。它是一个很长的字符串，中间用（ . ）分隔成三个部分。</p>
|
|||
|
|
<div data-rehype-pretty-code-fragment><pre style="background-color:var(--shiki-color-background);" tabindex="0" data-language="text" data-theme="default"><code data-language="text" data-theme="default"><span data-line><span style="color:var(--shiki-color-text);">eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c</span></span></code></pre></div>
|
|||
|
|
<h4 id="header-头部">Header 头部<a aria-hidden="true" tabindex="-1" href="#header-头部" class="internal"> §</a></h4>
|
|||
|
|
<p>在 Header 中通常包含了两部分：</p>
|
|||
|
|
<ul>
|
|||
|
|
<li>typ：代表 Token 的类型，这里使用的是 JWT 类型。</li>
|
|||
|
|
<li>alg：使用的 Hash 算法，例如 HMAC SHA256 或 RSA。</li>
|
|||
|
|
</ul>
|
|||
|
|
<div data-rehype-pretty-code-fragment><pre style="background-color:var(--shiki-color-background);" tabindex="0" data-language="json" data-theme="default"><code data-language="json" data-theme="default"><span data-line><span style="color:var(--shiki-color-text);">{</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-keyword);">"alg"</span><span style="color:var(--shiki-token-punctuation);">:</span><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-string-expression);">"HS256"</span><span style="color:var(--shiki-token-punctuation);">,</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-keyword);">"typ"</span><span style="color:var(--shiki-token-punctuation);">:</span><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-string-expression);">"JWT"</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);">}</span></span></code></pre></div>
|
|||
|
|
<h4 id="payload-负载">Payload 负载<a aria-hidden="true" tabindex="-1" href="#payload-负载" class="internal"> §</a></h4>
|
|||
|
|
<p>它包含一些声明 Claim（实体的描述，通常是一个 User 信息，还包括一些其他的元数据），用来存放实际需要传递的数据，JWT 规定了 7 个官方字段：</p>
|
|||
|
|
<ul>
|
|||
|
|
<li>iss（issuer）：签发人</li>
|
|||
|
|
<li>exp（expiration time）：过期时间</li>
|
|||
|
|
<li>sub（subject）：主题</li>
|
|||
|
|
<li>aud（audience）：受众</li>
|
|||
|
|
<li>nbf（Not Before）：生效时间</li>
|
|||
|
|
<li>iat（Issued At）：签发时间</li>
|
|||
|
|
<li>jti（JWT ID）：编号</li>
|
|||
|
|
</ul>
|
|||
|
|
<p>除了官方字段，你还可以在这个部分定义私有字段，下面就是一个例子。</p>
|
|||
|
|
<div data-rehype-pretty-code-fragment><pre style="background-color:var(--shiki-color-background);" tabindex="0" data-language="json" data-theme="default"><code data-language="json" data-theme="default"><span data-line><span style="color:var(--shiki-color-text);">{</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-keyword);">"sub"</span><span style="color:var(--shiki-token-punctuation);">:</span><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-string-expression);">"1234567890"</span><span style="color:var(--shiki-token-punctuation);">,</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-keyword);">"name"</span><span style="color:var(--shiki-token-punctuation);">:</span><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-string-expression);">"John Doe"</span><span style="color:var(--shiki-token-punctuation);">,</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-keyword);">"admin"</span><span style="color:var(--shiki-token-punctuation);">:</span><span style="color:var(--shiki-color-text);"> </span><span style="color:var(--shiki-token-constant);">true</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-color-text);">}</span></span></code></pre></div>
|
|||
|
|
<h4 id="signature-签名">Signature 签名<a aria-hidden="true" tabindex="-1" href="#signature-签名" class="internal"> §</a></h4>
|
|||
|
|
<p>Signature 部分是对前两部分的签名，防止数据篡改。</p>
|
|||
|
|
<p>首先，需要指定一个密钥（secret）。这个密钥只有服务器才知道，不能泄露给用户。然后，使用 Header 里面指定的签名算法（默认是 HMAC SHA256），按照下面的公式产生签名。</p>
|
|||
|
|
<div data-rehype-pretty-code-fragment><pre style="background-color:var(--shiki-color-background);" tabindex="0" data-language="java" data-theme="default"><code data-language="java" data-theme="default"><span data-line><span style="color:var(--shiki-token-function);">HMACSHA256(</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-token-function);"> base64UrlEncode(header) </span><span style="color:var(--shiki-token-keyword);">+</span><span style="color:var(--shiki-token-function);"> </span><span style="color:var(--shiki-token-string-expression);">"."</span><span style="color:var(--shiki-token-function);"> </span><span style="color:var(--shiki-token-keyword);">+</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-token-function);"> base64UrlEncode(payload)</span><span style="color:var(--shiki-token-punctuation);">,</span></span>
|
|||
|
|
<span data-line><span style="color:var(--shiki-token-function);"> secret)</span></span></code></pre></div>
|
|||
|
|
<h3 id="jwt-的使用方式">JWT 的使用方式<a aria-hidden="true" tabindex="-1" href="#jwt-的使用方式" class="internal"> §</a></h3>
|
|||
|
|
<p>客户端收到服务器返回的 JWT，可以储存在 Cookie 里面，也可以储存在 localStorage。</p>
|
|||
|
|
<p>此后，客户端每次与服务器通信，都要带上这个 JWT。你可以把它放在 Cookie 里面自动发送，但是这样不能跨域，所以更好的做法是放在 HTTP 请求的头信息 Authorization 字段里面。</p>
|
|||
|
|
<div data-rehype-pretty-code-fragment><pre style="background-color:var(--shiki-color-background);" tabindex="0" data-language="http" data-theme="default"><code data-language="http" data-theme="default"><span data-line><span style="color:var(--shiki-color-text);"> Authorization: Bearer <token></span></span></code></pre></div>
|
|||
|
|
<h3 id="jwt-的认证流程图">JWT 的认证流程图<a aria-hidden="true" tabindex="-1" href="#jwt-的认证流程图" class="internal"> §</a></h3>
|
|||
|
|
<p><img src="https://static.7wate.com/img/2022/08/30/d6666d37094db.png" alt="JWT 的认证流程图"/></p>
|
|||
|
|
<h3 id="jwt-的优点">JWT 的优点<a aria-hidden="true" tabindex="-1" href="#jwt-的优点" class="internal"> §</a></h3>
|
|||
|
|
<ul>
|
|||
|
|
<li>不需要在服务端保存会话信息（RESTful API 的原则之一就是无状态），所以易于应用的扩展，即信息不保存在服务端，不会存在 Session 扩展不方便的情况。</li>
|
|||
|
|
<li>JWT 中的 Payload 负载可以存储常用信息，用于信息交换，有效地使用 JWT，可以降低服务端查询数据库的次数。</li>
|
|||
|
|
</ul>
|
|||
|
|
<h3 id="jwt-的缺点">JWT 的缺点<a aria-hidden="true" tabindex="-1" href="#jwt-的缺点" class="internal"> §</a></h3>
|
|||
|
|
<ul>
|
|||
|
|
<li><strong>加密问题：</strong> JWT 默认是不加密，但也是可以加密的；生成原始 Token 以后，可以用密钥再加密一次。</li>
|
|||
|
|
<li><strong>到期问题：</strong> 由于服务器不保存 Session 状态，因此无法在使用过程中废止某个 Token，或者更改 Token 的权限。一旦 JWT 签发了，在到期之前就会始终有效，除非服务器部署额外的逻辑。</li>
|
|||
|
|
</ul></article></div><div class="right sidebar"><div class="graph "><h3>Graph View</h3><div class="graph-outer"><div id="graph-container" data-cfg="{"drag":true,"zoom":true,"depth":1,"scale":1.1,"repelForce":0.5,"centerForce":0.3,"linkDistance":30,"fontSize":0.6,"opacityScale":1,"showTags":true,"removeTags":[]}"></div><svg version="1.1" id="global-graph-icon" xmlns="http://www.w3.org/2000/svg" xmlnsXlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 55 55" fill="currentColor" xmlSpace="preserve"><path d="M49,0c-3.309,0-6,2.691-6,6c0,1.035,0.263,2.009,0.726,2.86l-9.829,9.829C32.542,17.634,30.846,17,29,17
|
|||
|
|
s-3.542,0.634-4.898,1.688l-7.669-7.669C16.785,10.424,17,9.74,17,9c0-2.206-1.794-4-4-4S9,6.794,9,9s1.794,4,4,4
|
|||
|
|
c0.74,0,1.424-0.215,2.019-0.567l7.669,7.669C21.634,21.458,21,23.154,21,25s0.634,3.542,1.688,4.897L10.024,42.562
|
|||
|
|
C8.958,41.595,7.549,41,6,41c-3.309,0-6,2.691-6,6s2.691,6,6,6s6-2.691,6-6c0-1.035-0.263-2.009-0.726-2.86l12.829-12.829
|
|||
|
|
c1.106,0.86,2.44,1.436,3.898,1.619v10.16c-2.833,0.478-5,2.942-5,5.91c0,3.309,2.691,6,6,6s6-2.691,6-6c0-2.967-2.167-5.431-5-5.91
|
|||
|
|
v-10.16c1.458-0.183,2.792-0.759,3.898-1.619l7.669,7.669C41.215,39.576,41,40.26,41,41c0,2.206,1.794,4,4,4s4-1.794,4-4
|
|||
|
|
s-1.794-4-4-4c-0.74,0-1.424,0.215-2.019,0.567l-7.669-7.669C36.366,28.542,37,26.846,37,25s-0.634-3.542-1.688-4.897l9.665-9.665
|
|||
|
|
C46.042,11.405,47.451,12,49,12c3.309,0,6-2.691,6-6S52.309,0,49,0z M11,9c0-1.103,0.897-2,2-2s2,0.897,2,2s-0.897,2-2,2
|
|||
|
|
S11,10.103,11,9z M6,51c-2.206,0-4-1.794-4-4s1.794-4,4-4s4,1.794,4,4S8.206,51,6,51z M33,49c0,2.206-1.794,4-4,4s-4-1.794-4-4
|
|||
|
|
s1.794-4,4-4S33,46.794,33,49z M29,31c-3.309,0-6-2.691-6-6s2.691-6,6-6s6,2.691,6,6S32.309,31,29,31z M47,41c0,1.103-0.897,2-2,2
|
|||
|
|
s-2-0.897-2-2s0.897-2,2-2S47,39.897,47,41z M49,10c-2.206,0-4-1.794-4-4s1.794-4,4-4s4,1.794,4,4S51.206,10,49,10z"></path></svg></div><div id="global-graph-outer"><div id="global-graph-container" data-cfg="{"drag":true,"zoom":true,"depth":-1,"scale":0.9,"repelForce":0.5,"centerForce":0.3,"linkDistance":30,"fontSize":0.6,"opacityScale":1,"showTags":true,"removeTags":[]}"></div></div></div><div class="toc desktop-only"><button type="button" id="toc" class><h3>Table of Contents</h3><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="fold"><polyline points="6 9 12 15 18 9"></polyline></svg></button><div id="toc-content"><ul class="overflow"><li class="depth-0"><a href="#jwtjson-web-token鉴权" data-for="jwtjson-web-token鉴权">JWT（JSON Web Token）鉴权</a></li><li class="depth-1"><a href="#jwt-的定义" data-for="jwt-的定义">JWT 的定义</a></li><li class="depth-1"><a href="#jwt-的组成" data-for="jwt-的组成">JWT 的组成</a></li><li class="depth-1"><a href="#jwt-的使用方式" data-for="jwt-的使用方式">JWT 的使用方式</a></li><li class="depth-1"><a href="#jwt-的认证流程图" data-for="jwt-的认证流程图">JWT 的认证流程图</a></li><li class="depth-1"><a href="#jwt-的优点" data-for="jwt-的优点">JWT 的优点</a></li><li class="depth-1"><a href="#jwt-的缺点" data-for="jwt-的缺点">JWT 的缺点</a></li></ul></div></div><div class="backlinks "><h3>Backlinks</h3><ul class="overflow"><li>No backlinks found</li></ul></div><div class="explorer mobile-only"><button type="button" id="explorer" data-behavior="collapse" data-collapsed="collapsed" data-savestate="true" data-tree="[{"path":"Basics","collapsed":true},{"path":"Basics/english","collapsed":true},{"path":"Blog","collapsed":true},{"path":"Book","collapsed":true},{"path":"Book/个人成长","collapsed":true},{"path":"Book/医学健康","collapsed":true},{"path":"Book/历史","collapsed":true},{"path":"Book/哲学宗教","collapsed":true},{"path":"Book/心理","collapsed":true},{"path":"Book/政治军事","collapsed":true},{"path":"Book/教育学习","collapsed":true},{"path":"Book/文学","collapsed":true},{"path":"Book/生活百科","collapsed":true},{"path":"Book/社会文化","collapsed":true},{"path":"Book/科学技术","collapsed":true},{"path":"Book/经济理财","collapsed":true},{"path":"Book/艺术","collapsed":true},{"path":"Book/计算机","collapsed":true},{"path":"Company","collapsed":true},{"path":"Company/信息化","collapsed":true},{"path":"Company/信息化/规范","collapsed":true},{"path":"Culture","collapsed":true},{"path":"Government","collapsed":true},{"path":"Government/中国","collapsed":true},{"path":"Government/中国/标准","collapsed":true},{"path":"Government/中国/法律","collapsed":true},{"path":"Journal","collapsed":true},{"path":"Journal/2022","collapsed":true},{"path":"Journal/2022/W34","collapsed":true},{"path":"Journal/2022/W35","collapsed":true},{"path"
|
|||
|
|
function toggleCallout() {
|
|||
|
|
const outerBlock = this.parentElement;
|
|||
|
|
outerBlock.classList.toggle(`is-collapsed`);
|
|||
|
|
const collapsed = outerBlock.classList.contains(`is-collapsed`);
|
|||
|
|
const height = collapsed ? this.scrollHeight : outerBlock.scrollHeight;
|
|||
|
|
outerBlock.style.maxHeight = height + `px`;
|
|||
|
|
let current = outerBlock;
|
|||
|
|
let parent = outerBlock.parentElement;
|
|||
|
|
while (parent) {
|
|||
|
|
if (!parent.classList.contains(`callout`)) {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
const collapsed2 = parent.classList.contains(`is-collapsed`);
|
|||
|
|
const height2 = collapsed2 ? parent.scrollHeight : parent.scrollHeight + current.scrollHeight;
|
|||
|
|
parent.style.maxHeight = height2 + `px`;
|
|||
|
|
current = parent;
|
|||
|
|
parent = parent.parentElement;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
function setupCallout() {
|
|||
|
|
const collapsible = document.getElementsByClassName(
|
|||
|
|
`callout is-collapsible`
|
|||
|
|
);
|
|||
|
|
for (const div of collapsible) {
|
|||
|
|
const title = div.firstElementChild;
|
|||
|
|
if (title) {
|
|||
|
|
title.removeEventListener(`click`, toggleCallout);
|
|||
|
|
title.addEventListener(`click`, toggleCallout);
|
|||
|
|
const collapsed = div.classList.contains(`is-collapsed`);
|
|||
|
|
const height = collapsed ? title.scrollHeight : div.scrollHeight;
|
|||
|
|
div.style.maxHeight = height + `px`;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
document.addEventListener(`nav`, setupCallout);
|
|||
|
|
window.addEventListener(`resize`, setupCallout);
|
|||
|
|
</script><script type="module">
|
|||
|
|
import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.esm.min.mjs';
|
|||
|
|
const darkMode = document.documentElement.getAttribute('saved-theme') === 'dark'
|
|||
|
|
mermaid.initialize({
|
|||
|
|
startOnLoad: false,
|
|||
|
|
securityLevel: 'loose',
|
|||
|
|
theme: darkMode ? 'dark' : 'default'
|
|||
|
|
});
|
|||
|
|
document.addEventListener('nav', async () => {
|
|||
|
|
await mermaid.run({
|
|||
|
|
querySelector: '.mermaid'
|
|||
|
|
})
|
|||
|
|
});
|
|||
|
|
</script><script src="https://cdn.jsdelivr.net/npm/katex@0.16.7/dist/contrib/copy-tex.min.js" type="application/javascript"></script><script src="../../../../postscript.js" type="module"></script></html>
|