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<input class="form-check-input" type="radio" name="site_theme" id="site_theme_7" value="translucent-cyan">
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<input class="form-check-input" type="radio" name="site_theme" id="site_theme_8" value="dark">
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<li class="lyear-skin-title"><p>LOGO</p></li>
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<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_2" value="color_2">
<label class="form-check-label" for="logo_bg_2"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_3" value="color_3">
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_4" value="color_4">
<label class="form-check-label" for="logo_bg_4"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_5" value="color_5">
<label class="form-check-label" for="logo_bg_5"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_6" value="color_6">
<label class="form-check-label" for="logo_bg_6"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_7" value="color_7">
<label class="form-check-label" for="logo_bg_7"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_8" value="color_8">
<label class="form-check-label" for="logo_bg_8"></label>
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<li class="lyear-skin-title"><p>头部</p></li>
<li class="lyear-skin-li clearfix">
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<input class="form-check-input" type="radio" name="header_bg" id="header_bg_1" value="default" checked="checked">
<label class="form-check-label" for="header_bg_1"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="header_bg" id="header_bg_2" value="color_2">
<label class="form-check-label" for="header_bg_2"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="header_bg" id="header_bg_3" value="color_3">
<label class="form-check-label" for="header_bg_3"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="header_bg" id="header_bg_4" value="color_4">
<label class="form-check-label" for="header_bg_4"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="header_bg" id="header_bg_5" value="color_5">
<label class="form-check-label" for="header_bg_5"></label>
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<input class="form-check-input" type="radio" name="header_bg" id="header_bg_6" value="color_6">
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<input class="form-check-input" type="radio" name="header_bg" id="header_bg_7" value="color_7">
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_2" value="color_2">
<label class="form-check-label" for="sidebar_bg_2"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_3" value="color_3">
<label class="form-check-label" for="sidebar_bg_3"></label>
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<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_4" value="color_4">
<label class="form-check-label" for="sidebar_bg_4"></label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_5" value="color_5">
<label class="form-check-label" for="sidebar_bg_5"></label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_6" value="color_6">
<label class="form-check-label" for="sidebar_bg_6"></label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_7" value="color_7">
<label class="form-check-label" for="sidebar_bg_7"></label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_8" value="color_8">
<label class="form-check-label" for="sidebar_bg_8"></label>
</div>
</li>
</ul>
</li>
<!--End 切换主题配色-->
<!--个人头像内容-->
<li class="dropdown">
<a href="javascript:void(0)" data-bs-toggle="dropdown" class="dropdown-toggle">
<img class="avatar-md rounded-circle" src="images/users/avatar.jpg" alt="笔下光年" />
<span style="margin-left: 10px;">笔下光年</span>
</a>
<ul class="dropdown-menu dropdown-menu-end">
<li>
<a class="dropdown-item" href="lyear_pages_profile.html"
href="javascript:void(0)">
<i class="mdi mdi-account"></i>
<span>个人信息</span>
</a>
</li>
<li>
<a class="dropdown-item" href="lyear_pages_edit_pwd.html"
href="javascript:void(0)">
<i class="mdi mdi-lock-outline"></i>
<span>修改密码</span>
</a>
</li>
<li>
<a class="dropdown-item" href="javascript:void(0)">
<i class="mdi mdi-delete"></i>
<span>清空缓存</span>
</a>
</li>
<li class="dropdown-divider"></li>
<li>
<a class="dropdown-item" href="lyear_pages_login_1.html">
<i class="mdi mdi-logout-variant"></i>
<span>退出登录</span>
</a>
</li>
</ul>
</li>
<!--End 个人头像内容-->
</ul>
</nav>
</header>
<!--End 头部信息-->
<!--页面主要内容-->
<main class="lyear-layout-content">
<div class="container-fluid">
<div class="row">
<div class="col-lg-12">
<div class="card">
<header class="card-header"><div class="card-title">滑动容器</div></header>
<div class="card-body">
<p>使用一些类和我们的 JavaScript 插件将隐藏的侧边栏构建到您的项目中，用于导航、购物车等。</p>
<h5>它是如何运作的</h5>
<p>Offcanvas 是一个侧边栏组件，可以通过 JavaScript 切换以从视口的左侧、右侧、顶部或底部边缘显示。 按钮或锚点用作附加到您切换的特定元素的触发器，而 <code>data</code> 属性用于调用我们的 JavaScript。</p>
<ul>
<li>Offcanvas 与 modals 共享一些相同的 JavaScript 代码。 从概念上讲，它们非常相似，但它们是独立的插件。</li>
<li>类似地，一些用于 offcanvas 样式和尺寸的资源 Sass 变量继承自 modal 的变量。</li>
<li>显示时，offcanvas 包含一个默认背景，单击该背景可以隐藏 offcanvas。</li>
<li>与 modals 类似，一次只能显示一个 offcanvas。</li>
</ul>
<p><strong>请注意！</strong>鉴于 CSS 处理动画的方式，您不能在 <code>.offcanvas</code> 元素上使用 <code>margin</code> 或 <code>translate</code>。 相反，将类用作独立的包装元素。</p>
<div class="callout callout-info mb-3">
该组件的动画效果依赖于 <code>prefers-reduced-motion</code> 媒体查询。 请参阅<a href="https://v5.bootcss.com/docs/getting-started/accessibility/#reduced-motion" target="_blank">辅助功能文档的减少运动部分</a>。
</div>
<h5>例子</h5>
<h6>画布外组件</h6>
<p>下面是一个默认显示的 offcanvas 示例（通过 <code>.offcanvas</code> 上的 <code>.show</code>）。 Offcanvas 支持带有关闭按钮的标题和一些初始 <code>padding</code> 的可选正文类。 我们建议您尽可能在关闭操作中包含 offcanvas 标头，或提供明确的关闭操作。</p>
<div class="border-example border-example-offcanvas p-0 bg-light overflow-hidden">
<div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvas" aria-labelledby="offcanvasLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasLabel">《铁崖乐府》</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
中国古籍，杨维桢著作。尤以乐府擅名，号铁崖体，在元季文坛独领风骚40余年。
</div>
</div>
</div>
<pre><div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvas" aria-labelledby="offcanvasLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasLabel">《铁崖乐府》</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
中国古籍，杨维桢著作。尤以乐府擅名，号铁崖体，在元季文坛独领风骚40余年。
</div>
</div></pre>
<h6>现场演示</h6>
<p>使用下面的按钮通过 JavaScript 显示和隐藏 offcanvas 元素，该元素在具有 <code>.offcanvas</code> 类的元素上切换 <code>.show</code> 类。</p>
<ul>
<li><code>.offcanvas</code> 隐藏内容（默认）</li>
<li><code>.offcanvas.show</code> 显示内容</li>
</ul>
<p>您可以使用带有 <code>href</code> 属性的链接，或带有 <code>data-bs-target</code> 属性的按钮。 在这两种情况下，<code>data-bs-toggle=“offcanvas”</code> 都是必需的。</p>
<div class="border-example">
<a class="btn btn-primary" data-bs-toggle="offcanvas" href="#offcanvasExample" role="button" aria-controls="offcanvasExample">
使用链接的href
</a>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasExample" aria-controls="offcanvasExample">
使用按钮的data-bs-target
</button>
<div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvasExample" aria-labelledby="offcanvasExampleLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasExampleLabel">《越绝书》</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<div class="">
以春秋末年至战国初期吴越争霸的历史事实为主干，上溯夏禹，下迄两汉，旁及诸侯列国，对这一历史时期吴越地区的汉民族政治、经济、军事、天文、地理、历法、语言等多有所涉及，被誉为“地方志鼻祖”。
</div>
<div class="dropdown mt-3">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown">
古文典籍
</button>
<ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<li><a class="dropdown-item" href="#">《千字文》</a></li>
<li><a class="dropdown-item" href="#">《孟子》</a></li>
<li><a class="dropdown-item" href="#">《菜根谭》</a></li>
</ul>
</div>
</div>
</div>
</div>
<pre><a class="btn btn-primary" data-bs-toggle="offcanvas" href="#offcanvasExample" role="button" aria-controls="offcanvasExample">
使用链接的href
</a>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasExample" aria-controls="offcanvasExample">
使用按钮的data-bs-target
</button>
<div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvasExample" aria-labelledby="offcanvasExampleLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasExampleLabel">《越绝书》</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<div class="">
以春秋末年至战国初期吴越争霸的历史事实为主干，上溯夏禹，下迄两汉，旁及诸侯列国，对这一历史时期吴越地区的汉民族政治、经济、军事、天文、地理、历法、语言等多有所涉及，被誉为“地方志鼻祖”。
</div>
<div class="dropdown mt-3">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown">
古文典籍
</button>
<ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<li><a class="dropdown-item" href="#">《千字文》</a></li>
<li><a class="dropdown-item" href="#">《孟子》</a></li>
<li><a class="dropdown-item" href="#">《菜根谭》</a></li>
</ul>
</div>
</div>
</div></pre>
<h5>放置方式</h5>
<p>offcanvas 组件没有默认放置，因此您必须添加以下修饰符类之一；</p>
<ul>
<li><code>.offcanvas-start</code> 将 offcanvas 放置在视口的左侧（如上所示）</li>
<li><code>.offcanvas-end</code> 将 offcanvas 放置在视口的右侧</li>
<li><code>.offcanvas-top</code> 将 offcanvas 放置在视口的顶部</li>
<li><code>.offcanvas-bottom</code> 将 offcanvas 放置在视口底部</li>
</ul>
<p>试试下面的顶部、右侧和底部示例。</p>
<div class="border-example">
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasTop" aria-controls="offcanvasTop">切换顶部offcanvas</button>
<div class="offcanvas offcanvas-top" tabindex="-1" id="offcanvasTop" aria-labelledby="offcanvasTopLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasTopLabel">顶部Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
...
</div>
</div>
</div>
<pre><button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasTop" aria-controls="offcanvasTop">切换顶部offcanvas</button>
<div class="offcanvas offcanvas-top" tabindex="-1" id="offcanvasTop" aria-labelledby="offcanvasTopLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasTopLabel">顶部Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
...
</div>
</div></pre>
<div class="border-example">
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasRight" aria-controls="offcanvasRight">切换右侧offcanvas</button>
<div class="offcanvas offcanvas-end" tabindex="-1" id="offcanvasRight" aria-labelledby="offcanvasRightLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasRightLabel">右侧Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
...
</div>
</div>
</div>
<pre><button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasRight" aria-controls="offcanvasRight">切换右侧offcanvas</button>
<div class="offcanvas offcanvas-end" tabindex="-1" id="offcanvasRight" aria-labelledby="offcanvasRightLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasRightLabel">右侧Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
...
</div>
</div></pre>
<div class="border-example">
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasBottom" aria-controls="offcanvasBottom">切换底部offcanvas</button>
<div class="offcanvas offcanvas-bottom" tabindex="-1" id="offcanvasBottom" aria-labelledby="offcanvasBottomLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasBottomLabel">底部Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body small">
...
</div>
</div>
</div>
<pre><button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasBottom" aria-controls="offcanvasBottom">切换底部offcanvas</button>
<div class="offcanvas offcanvas-bottom" tabindex="-1" id="offcanvasBottom" aria-labelledby="offcanvasBottomLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasBottomLabel">底部Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body small">
...
</div>
</div></pre>
<h5>背景</h5>
<p>当 offcanvas 及其背景可见时，滚动 <code><body></code> 元素将被禁用。 使用 <code>data-bs-scroll</code> 属性来切换 <code><body></code> 滚动，使用 <code>data-bs-backdrop</code> 来切换背景。</p>
<div class="border-example">
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasScrolling" aria-controls="offcanvasScrolling">启用正文滚动</button>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasWithBackdrop" aria-controls="offcanvasWithBackdrop">启用背景（默认）</button>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasWithBothOptions" aria-controls="offcanvasWithBothOptions">同时启用滚动和背景</button>
<div class="offcanvas offcanvas-start" data-bs-scroll="true" data-bs-backdrop="false" tabindex="-1" id="offcanvasScrolling" aria-labelledby="offcanvasScrollingLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasScrollingLabel">带正文滚动的 Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>尝试滚动页面的其余部分以查看此选项的实际效果。</p>
</div>
</div>
<div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvasWithBackdrop" aria-labelledby="offcanvasWithBackdropLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasWithBackdropLabel">带背景的 Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>.....</p>
</div>
</div>
<div class="offcanvas offcanvas-start" data-bs-scroll="true" tabindex="-1" id="offcanvasWithBothOptions" aria-labelledby="offcanvasWithBothOptionsLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasWithBothOptionsLabel">带滚动的背景</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>尝试滚动页面的其余部分以查看此选项的实际效果。</p>
</div>
</div>
</div>
<pre><button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasScrolling" aria-controls="offcanvasScrolling">启用正文滚动</button>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasWithBackdrop" aria-controls="offcanvasWithBackdrop">启用背景（默认）</button>
<button class="btn btn-primary" type="button" data-bs-toggle="offcanvas" data-bs-target="#offcanvasWithBothOptions" aria-controls="offcanvasWithBothOptions">同时启用滚动和背景</button>
<div class="offcanvas offcanvas-start" data-bs-scroll="true" data-bs-backdrop="false" tabindex="-1" id="offcanvasScrolling" aria-labelledby="offcanvasScrollingLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasScrollingLabel">带正文滚动的 Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>尝试滚动页面的其余部分以查看此选项的实际效果。</p>
</div>
</div>
<div class="offcanvas offcanvas-start" tabindex="-1" id="offcanvasWithBackdrop" aria-labelledby="offcanvasWithBackdropLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasWithBackdropLabel">带背景的 Offcanvas</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>.....</p>
</div>
</div>
<div class="offcanvas offcanvas-start" data-bs-scroll="true" tabindex="-1" id="offcanvasWithBothOptions" aria-labelledby="offcanvasWithBothOptionsLabel">
<div class="offcanvas-header">
<h5 class="offcanvas-title" id="offcanvasWithBothOptionsLabel">带滚动的背景</h5>
<button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
</div>
<div class="offcanvas-body">
<p>尝试滚动页面的其余部分以查看此选项的实际效果。</p>
</div>
</div></pre>
<h5>可访问性</h5>
<p>由于 offcanvas 面板在概念上是一个模态对话框，因此请务必将 <code>aria-labelledby="..."</code>（引用 offcanvas 标题）添加到 <code>.offcanvas</code>。 请注意，您不需要添加 <code>role="dialog"</code>，因为我们已经通过 JavaScript 添加了它。</p>
<h5>用法</h5>
<p>offcanvas 插件利用一些类和属性来处理繁重的工作：</p>
<ul>
<li><code>.offcanvas</code> 隐藏内容</li>
<li><code>.offcanvas.show</code> 显示内容</li>
<li><code>.offcanvas-start</code> 将 offcanvas 隐藏在左侧</li>
<li><code>.offcanvas-end</code> 将 offcanvas 隐藏在右侧</li>
<li><code>.offcanvas-top</code> 将 offcanvas 隐藏在顶部</li>
<li><code>.offcanvas-bottom</code> 将 offcanvas 隐藏在底部</li>
</ul>
<p>添加一个带有 <code>data-bs-dismiss="offcanvas"</code> 属性的关闭按钮，它会触发 JavaScript 功能。 请务必将 <code><button></code> 元素与它一起使用，以确保在所有设备上都能正常运行。</p>
<h6>通过数据属性</h6>
<strong>Toggle</strong>
<p>将 <code>data-bs-toggle=“offcanvas”</code> 和 <code>data-bs-target</code> 或 <code>href</code> 添加到元素以自动分配控制权 画布外元素。 <code>data-bs-target</code> 属性接受一个 CSS 选择器来应用 offcanvas。 请务必将类 <code>offcanvas</code> 添加到 offcanvas 元素。 如果您希望它默认打开，请添加附加类 <code>show</code>。</p>
<strong>Dismiss</strong>
<p>可以通过 <strong>offcanvas</strong> 内的按钮上的 <code>data</code> 属性来实现解雇，如下所示：</p>
<pre><button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button></pre>
<p>或使用 <code>data-bs-target</code> 在 <strong>offcanvas 之外的按钮</strong> 上，如下所示：</p>
<pre><button type="button" class="btn-close" data-bs-dismiss="offcanvas" data-bs-target="#my-offcanvas" aria-label="Close"></button></pre>
<div class="callout callout-warning mb-3">
虽然支持关闭画布的两种方式，但请记住，从画布外部解除与 <a href="https://www.w3.org/TR/wai-aria-practices-1.1/#dialog_modal" 不匹配 target="_blank">WAI-ARIA 模式对话框设计模式</a>。 这样做需要您自担风险。
</div>
<h6>通过 JavaScript</h6>
<p>手动启用：</p>
<pre>var offcanvasElementList = Array.prototype.slice.call(document.querySelectorAll('.offcanvas'))
var offcanvasList = offcanvasElementList.map(function (offcanvasEl) {
return new bootstrap.Offcanvas(offcanvasEl)
})</pre>
<h3 id="options">选项</h3>
<p>选项可以通过数据属性或 JavaScript 传递。 对于数据属性，将选项名称附加到 <code>data-bs-</code>，如 <code>data-bs-backdrop=""</code>。</p>
<table class="table">
<thead>
<tr>
<th>名称</th>
<th>类型</th>
<th>默认值</th>
<th>描述</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>backdrop</code></td>
<td>boolean</td>
<td><code>true</code></td>
<td>在画布打开时在身体上应用背景</td>
</tr>
<tr>
<td><code>keyboard</code></td>
<td>boolean</td>
<td><code>true</code></td>
<td>按下退出键时关闭画布</td>
</tr>
<tr>
<td><code>scroll</code></td>
<td>boolean</td>
<td><code>false</code></td>
<td>在 offcanvas 打开时允许正文滚动</td>
</tr>
</tbody>
</table>
<h6>方法</h6>
<div class="callout callout-danger mb-3">
<strong>异步方法和转换</strong>
<p>所有 API 方法都是<strong>异步</strong>并启动<strong>transition</strong>。 它们会在过渡开始后但<strong>在过渡结束之前</strong>返回给调用者。 此外，<strong>转换组件上的方法调用将被忽略</strong>。</p>
<p><a href="https://v5.bootcss.com/docs/getting-started/javascript/#asynchronous-functions-and-transitions" target="_blank">查看我们的 JavaScript 文档了解更多信息</a>。</p>
</div>
<p>将您的内容激活为画布元素。 接受可选选项<code>object</code>。</p>
<p>您可以使用构造函数创建一个 offcanvas 实例，例如：</p>
<pre>var myOffcanvas = document.getElementById('myOffcanvas')
var bsOffcanvas = new bootstrap.Offcanvas(myOffcanvas)</pre>
<table class="table">
<thead>
<tr>
<th>方法</th>
<th>描述</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<code>toggle</code>
</td>
<td>
将 offcanvas 元素切换为显示或隐藏。
<strong>在 offcanvas 元素实际显示或隐藏之前返回给调用者</strong>（即在 <code>shown.bs.offcanvas</code> 或 <code>hidden.bs.offcanvas</code>事件发生）。
</td>
</tr>
<tr>
<td>
<code>show</code>
</td>
<td>
显示一个 offcanvas 元素。
<strong>在 offcanvas 元素实际显示之前返回调用者</strong>（即在 <code>shown.bs.offcanvas</code> 事件发生之前）。
</td>
</tr>
<tr>
<td>
<code>hide</code>
</td>
<td>
隐藏 offcanvas 元素。
<strong>在 offcanvas 元素真正被隐藏之前返回给调用者</strong>（即在 <code>hidden.bs.offcanvas</code> 事件发生）。
</td>
</tr>
<tr>
<td>
<code>getInstance</code>
</td>
<td>
<em>static</em>方法，允许您获取与 DOM 元素关联的 offcanvas 实例。
</td>
</tr>
<tr>
<td>
<code>getOrCreateInstance</code>
</td>
<td>
<em>static</em>方法，允许您获取与 DOM 元素关联的 offcanvas 实例，或创建一个新实例以防它未初始化。
</td>
</tr>
</tbody>
</table>
<h6>事件</h6>
<p>Bootstrap 的 offcanvas 类公开了一些用于挂钩到 offcanvas 功能的事件。</p>
<table class="table">
<thead>
<tr>
<th>事件类型</th>
<th>描述</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>show.bs.offcanvas</code></td>
<td>此事件在调用 <code>show</code> 实例方法时立即触发。</td>
</tr>
<tr>
<td><code>shown.bs.offcanvas</code></td>
<td>当 offcanvas 元素对用户可见时触发此事件（将等待 CSS 转换完成）。</td>
</tr>
<tr>
<td><code>hide.bs.offcanvas</code></td>
<td>当调用 <code>hide</code> 方法时，会立即触发此事件。</td>
</tr>
<tr>
<td><code>hidden.bs.offcanvas</code></td>
<td>当一个 offcanvas 元素对用户隐藏时触发此事件（将等待 CSS 转换完成）。</td>
</tr>
</tbody>
</table>
<pre>var myOffcanvas = document.getElementById('myOffcanvas')
myOffcanvas.addEventListener('hidden.bs.offcanvas', function () {
// do something...
})</pre>
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