互动

更改用户与网站内容交互方式的实用程序类。

文本选择

更改用户与内容交互时选择内容的方式。

This paragraph will be entirely selected when clicked by the user.

This paragraph has default select behavior.

This paragraph will not be selectable when clicked by the user.

HTML

<p class="user-select-all">This paragraph will be entirely selected when clicked by the user.</p>
<p class="user-select-auto">This paragraph has default select behavior.</p>
<p class="user-select-none">This paragraph will not be selectable when clicked by the user.</p>

指针事件

Bootstrap 提供.pe-none和.pe-auto类来防止或添加元素交互。

This link can not be clicked.

This link can be clicked (this is default behavior).

This link can not be clicked because the pointer-events property is inherited from its parent. However, this link has a pe-auto class and can be clicked.

HTML

<p><a href="#" class="pe-none" tabindex="-1" aria-disabled="true">This link</a> can not be clicked.</p>
<p><a href="#" class="pe-auto">This link</a> can be clicked (this is default behavior).</p>
<p class="pe-none"><a href="#" tabindex="-1" aria-disabled="true">This link</a> can not be clicked because the <code>pointer-events</code> property is inherited from its parent. However, <a href="#" class="pe-auto">this link</a> has a <code>pe-auto</code> class and can be clicked.</p>

.pe-none类（及其设置的pointer-eventsCSS 属性）仅防止与指针（鼠标、手写笔、触摸）的交互。默认情况下，链接和控件对于键盘用户来说仍然是可聚焦和可操作的。为了确保它们即使对于键盘用户也能完全中和，您可能需要添加更多属性，例如tabindex="-1"（以防止它们接收键盘焦点）和aria-disabled="true"（向辅助技术传达它们被有效禁用的事实），并可能使用 JavaScript 来完全阻止他们采取行动。

如果可能，更简单的解决方案是：

对于表单控件，添加disabledHTML 属性。
对于链接，删除该href属性，使其成为非交互式锚点或占位符链接。

Sass

实用程序接口

交互实用程序在我们的实用程序 API 中声明scss/_utilities.scss。了解如何使用实用程序 API。

    "user-select": (
      property: user-select,
      values: all auto none
    ),
    "pointer-events": (
      property: pointer-events,
      class: pe,
      values: none auto,
    ),