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199 lines
14 KiB
HTML
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<title>Liquid 模板语言简介 | LiquidJS</title>
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<a href="/zh-cn/" id="logo">LiquidJS</a>
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<a href="setup.html" class="main-nav-link">教程</a><a href="../tags/overview.html" class="main-nav-link">标签</a><a href="../filters/overview.html" class="main-nav-link">过滤器</a><a href="../playground.html" class="main-nav-link">演示</a><a href="../api/classes/liquid_.liquid.html" class="main-nav-link">API</a>
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<strong class="sidebar-title">开始使用</strong><a href="intro-to-liquid.html" class="sidebar-link current">Liquid 简介</a><a href="setup.html" class="sidebar-link">安装</a><a href="options.html" class="sidebar-link">选项</a><a href="render-file.html" class="sidebar-link">文件渲染</a><a href="partials-and-layouts.html" class="sidebar-link">引用/继承</a><a href="use-in-expressjs.html" class="sidebar-link">Express.js 中使用</a><strong class="sidebar-title">高级主题</strong><a href="caching.html" class="sidebar-link">缓存</a><a href="register-filters-tags.html" class="sidebar-link">注册标签/过滤器</a><a href="whitespace-control.html" class="sidebar-link">换行和缩进</a><a href="plugins.html" class="sidebar-link">插件</a><a href="operators.html" class="sidebar-link">运算符</a><a href="truthy-and-falsy.html" class="sidebar-link">真和假</a><strong class="sidebar-title">其他</strong><a href="migrate-to-9.html" class="sidebar-link">迁移到 LiquidJS 9</a><a href="changelog.html" class="sidebar-link">更新日志</a><a href="differences.html" class="sidebar-link">与 Shopify/liquid 的不同</a><a href="contribution-guidelines.html" class="sidebar-link">贡献指南</a>
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<article class="article-container" itemscope itemtype="http://schema.org/Article">
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<div class="article">
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<div class="inner">
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<header class="article-header">
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<h1 class="article-title" itemprop="name">Liquid 模板语言简介</h1>
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<a target="_blank" rel="noopener external nofollow noreferrer" href="https://github.com/harttle/liquidjs/edit/master/docs/source/zh-cn/tutorials/intro-to-liquid.md" class="article-edit-link" title="改进这篇文档"><i class="icon-pencil"></i></a>
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</header>
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<div class="article-content" itemprop="articleBody">
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<p>LiquidJS 是一个简单的、安全的、兼容 Shopify 的、纯 JavaScript 编写的模板引擎。这个项目的目的是为 JavaScript 社区提供一个 Liquid 模板引擎的实现。Liquid 最初用 Ruby 实现并用于 Github Pages, Jekyll 和 Shopify，参考 <a href="./differences.html">和 Shopify/liquid 的区别</a>。</p>
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<p>LiquidJS 语法相对简单。LiquidJS 中有两种标记：</p>
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<ul>
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<li><strong>标签</strong>。标签由标签名和参数构成，由 <code>{%</code> 和 <code>%}</code> 包裹。</li>
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<li><strong>输出</strong>。输出由一个值和一组可选的过滤器构成，由 <code>{{` 和 `}}</code> 包裹。</li>
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</ul>
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<h2 id="输出" class="article-heading"><a href="#输出" class="headerlink" title="输出"></a>输出<a class="article-anchor" href="#输出" aria-hidden="true"></a></h2><p><strong>输出</strong> 用于转换和输出变量到 HTMl。下面的模板将会把 <code>username</code> 的值插入到 input 的 <code>value</code>：</p>
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<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line"><input type="text" name="user" value="{{username}}"></span><br></pre></td></tr></table></figure>
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<p><em>输出</em> 里的值可以在输出之前经过若干个 <strong>过滤器</strong> 的转换。比如在变量后面追加一个字符串：</p>
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<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">{{ username | append: ", welcome to LiquidJS!" }}</span><br></pre></td></tr></table></figure>
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<p>过滤器可以级联，用起来像管道一样：</p>
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<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">{{ username | append: ", welcome to LiquidJS!" | capitalize }}</span><br></pre></td></tr></table></figure>
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<p><a href="../filters/overview.html">这里</a> 是 LiquidJS 支持的完整的过滤器列表。</p>
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<h2 id="标签" class="article-heading"><a href="#标签" class="headerlink" title="标签"></a>标签<a class="article-anchor" href="#标签" aria-hidden="true"></a></h2><p><strong>标签</strong> 用于控制模板渲染过程，操作模板变量，和其他模板交互等。例如 <code>assign</code> 可以用来定义一个模板中可以使用的变量：</p>
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<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">{% assign foo = "FOO" %}</span><br></pre></td></tr></table></figure>
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<p>一般标签成对地出现，一个开始标签和一个对应的结束标签，比如：</p>
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<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">{% if foo == "FOO" %}</span><br><span class="line"> Variable `foo` equals "FOO"</span><br><span class="line">{% else %}</span><br><span class="line"> Variable `foo` not equals "FOO"</span><br><span class="line">{% endif %}</span><br></pre></td></tr></table></figure>
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<p><a href="../tags/overview.html">这里</a> 是 LiquidJS 支持的完整的标签列表。</p>
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</div>
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<footer class="article-footer">
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<time class="article-footer-updated" datetime="2021-10-03T14:40:08.801Z" itemprop="dateModified">上次更新：2021-10-03</time>
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<a href="setup.html" class="article-footer-next" title="安装"><span>下一页</span><i class="icon-chevron-right"></i></a>
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<strong class="sidebar-title">目录</strong>
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<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#%E8%BE%93%E5%87%BA"><span class="toc-text">输出</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E6%A0%87%E7%AD%BE"><span class="toc-text">标签</span></a></li></ol>
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© 2021 <a href="https://github.com/harttle/liquidjs/graphs/contributors" rel="external nofollow noreferrer" target="_blank">Harttle</a><br>
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本文档通过 <a href="http://creativecommons.org/licenses/by/4.0/" rel="external nofollow noreferrer" target="_blank">CC BY 4.0</a> 授权。
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<strong class="mobile-nav-title">开始使用</strong><a href="intro-to-liquid.html" class="mobile-nav-link current">Liquid 简介</a><a href="setup.html" class="mobile-nav-link">安装</a><a href="options.html" class="mobile-nav-link">选项</a><a href="render-file.html" class="mobile-nav-link">文件渲染</a><a href="partials-and-layouts.html" class="mobile-nav-link">引用/继承</a><a href="use-in-expressjs.html" class="mobile-nav-link">Express.js 中使用</a><strong class="mobile-nav-title">高级主题</strong><a href="caching.html" class="mobile-nav-link">缓存</a><a href="register-filters-tags.html" class="mobile-nav-link">注册标签/过滤器</a><a href="whitespace-control.html" class="mobile-nav-link">换行和缩进</a><a href="plugins.html" class="mobile-nav-link">插件</a><a href="operators.html" class="mobile-nav-link">运算符</a><a href="truthy-and-falsy.html" class="mobile-nav-link">真和假</a><strong class="mobile-nav-title">其他</strong><a href="migrate-to-9.html" class="mobile-nav-link">迁移到 LiquidJS 9</a><a href="changelog.html" class="mobile-nav-link">更新日志</a><a href="differences.html" class="mobile-nav-link">与 Shopify/liquid 的不同</a><a href="contribution-guidelines.html" class="mobile-nav-link">贡献指南</a>
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