互动

文本选择

¥Text selection

更改用户与其交互时选择内容的方式。

¥Change the way in which the content is selected when the user interacts with it.

<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

¥Pointer events

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

¥Bootstrap provides .pe-none and .pe-auto classes to prevent or add element interactions.

<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-events CSS 属性）仅阻止与指针（鼠标、手写笔、触摸）的交互。默认情况下，键盘用户仍然可以对 .pe-none 的链接和控件进行聚焦和操作。为了确保即使对于键盘用户来说它们也被完全中和，你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"（以传达它们被有效禁用辅助技术的事实），并且可能使用 JavaScript 来完全阻止它们可操作。

¥The .pe-none class (and the pointer-events CSS property it sets) only prevents interactions with a pointer (mouse, stylus, touch). Links and controls with .pe-none are, by default, still focusable and actionable for keyboard users. To ensure that they are completely neutralized even for keyboard users, you may need to add further attributes such as tabindex="-1" (to prevent them from receiving keyboard focus) and aria-disabled="true" (to convey the fact they are effectively disabled to assistive technologies), and possibly use JavaScript to completely prevent them from being actionable.

如果可能的话，更简单的解决方案是：

¥If possible, the simpler solution is:

• 对于表单控件，添加 disabled HTML 属性。

  ¥For form controls, add the disabled HTML attribute.

• 对于链接，删除 href 属性，使其成为非交互式锚点或占位符链接。

  ¥For links, remove the href attribute, making it a non-interactive anchor or placeholder link.

CSS

Sass 工具 API

¥Sass utilities API

交互工具在 scss/_utilities.scss 中的工具 API 中声明。Learn how to use the utilities API.

¥Interaction utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.

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