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Getting started Accessibility(无障碍) Browsers and devices(浏览器和设备) Build tools(构建工具) Contents(内容) Download(下载) JavaScript Theming Bootstrap(主题Bootstrap) Webpack Components: Alerts Alerts(警报) Components: Badges Badges(徽章) Components: Breadcrumb Breadcrumb Components: Button group Button group(按钮组) Components: Buttons Buttons(按钮) Components: Cards Components: Carousel Cards(卡) Carousel(圆盘传送带) Components: Collapse Collapse(折叠) Components: Dropdowns Dropdowns(下拉菜单) Components: Forms Forms(表单) Components: Input group Input group(输入群组) Components: Input group Jumbotron(广告大屏幕) Components: List group List group(列表组) Components: Modal Modal(互动视窗) Components: Navbar Navbar(导航栏) Components: Navs Navs(导航栏) Components: Pagination Pagination(分页) Components: Popovers Popovers(弹出框) Components: Progress Progress(进度条) Components: Scrollspy Scrollspy(滚动监听) Components: Tooltips Tooltips(提示工具) Content Code(代码) Figures(图片区) Images(图片) Reboot(重置) Tables(表格) Typography(排版) Layout Grid(网格) Layout(布局) Media object(多媒体对象) Utilities for layout(排版通用类别) Migration Migrating to v4(迁移到v4) Utilities Borders(边框) Clearfix(清除浮动) Close icon(关闭图标) Colors(颜色) Display property(显示属性) Embeds(内嵌) Flex(弹性) Float(浮动) Image replacement(图像替换) Position(位置) Screenreaders(荧幕阅读器) Sizing(尺寸) Spacing(间隔) Text(文本) Vertical alignment(垂直对齐) Visibility(能见度)
characters

在通过 CSS 自动添加分隔符的导航层次结构中指示当前页面的位置。

概观

分隔符通过::beforecontent自动添加到CSS中。

<nav aria-label="breadcrumb" role="navigation">  <ol class="breadcrumb">    <li class="breadcrumb-item active" aria-current="page">Home</li>  </ol></nav><nav aria-label="breadcrumb" role="navigation">  <ol class="breadcrumb">    <li class="breadcrumb-item"><a href="#">Home</a></li>    <li class="breadcrumb-item active" aria-current="page">Library</li>  </ol></nav><nav aria-label="breadcrumb" role="navigation">  <ol class="breadcrumb">    <li class="breadcrumb-item"><a href="#">Home</a></li>    <li class="breadcrumb-item"><a href="#">Library</a></li>    <li class="breadcrumb-item active" aria-current="page">Data</li>  </ol></nav>

无障碍

由于breadcrumbs提供导航,因此最好添加一个有意义的标签,例如aria-label="breadcrumb"描述<nav>元素中提供的导航类型,并将该元素应用于aria-current="page"该集合的最后一项,以表示它代表当前页面。

有关更多信息,请参阅 breadcrumb模式WAI-ARIA创作实践。

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