Breadcrumb

Indicate the current page’s location within a navigational hierarchy that automatically adds separators via CSS.

Example

Breadcrumb - 图1

  1. <nav aria-label="breadcrumb">
  2. <ol class="breadcrumb">
  3. <li class="breadcrumb-item active" aria-current="page">Home</li>
  4. </ol>
  5. </nav>
  6. <nav aria-label="breadcrumb">
  7. <ol class="breadcrumb">
  8. <li class="breadcrumb-item"><a href="#">Home</a></li>
  9. <li class="breadcrumb-item active" aria-current="page">Library</li>
  10. </ol>
  11. </nav>
  12. <nav aria-label="breadcrumb">
  13. <ol class="breadcrumb">
  14. <li class="breadcrumb-item"><a href="#">Home</a></li>
  15. <li class="breadcrumb-item"><a href="#">Library</a></li>
  16. <li class="breadcrumb-item active" aria-current="page">Data</li>
  17. </ol>
  18. </nav>

Changing the separator

Separators are automatically added in CSS through ::before and content. They can be changed by changing $breadcrumb-divider. The quote function is needed to generate the quotes around a string, so if you want > as separator, you can use this:

  1. $breadcrumb-divider: quote(">");

It’s also possible to use a base64 embedded SVG icon:

  1. $breadcrumb-divider: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI4IiBoZWlnaHQ9IjgiPjxwYXRoIGQ9Ik0yLjUgMEwxIDEuNSAzLjUgNCAxIDYuNSAyLjUgOGw0LTQtNC00eiIgZmlsbD0iY3VycmVudENvbG9yIi8+PC9zdmc+);

The separator can be removed by setting $breadcrumb-divider to none:

  1. $breadcrumb-divider: none;

Accessibility

Since breadcrumbs provide a navigation, it’s a good idea to add a meaningful label such as aria-label="breadcrumb" to describe the type of navigation provided in the <nav> element, as well as applying an aria-current="page" to the last item of the set to indicate that it represents the current page.

For more information, see the WAI-ARIA Authoring Practices for the breadcrumb pattern.