拉伸链接
通过 CSS “拉伸”嵌套链接,让任何 HTML 元素或 Bootstrap 组件可点击。
将 .stretched-link
添加到链接,使其 包含块 可通过 ::after
伪元素点击。在大多数情况下,这意味着包含具有 .stretched-link
类的链接的元素 position: relative;
可点击。请注意,鉴于 CSS position
的工作原理,.stretched-link
不能与大多数表格元素混合使用。
在 Bootstrap 中,卡片默认具有 position: relative
,因此在这种情况下,你可以安全地将 .stretched-link
类添加到卡片中的链接,而无需任何其他 HTML 更改。
不建议在拉伸链接中使用多个链接和点击目标。但是,如果需要,一些 position
和 z-index
样式可以提供帮助。
<div class="card" style="width: 18rem;">
<img src="..." class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">Card with stretched link</h5>
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
<a href="#" class="btn btn-primary stretched-link">Go somewhere</a>
</div>
</div>
大多数自定义组件默认没有 position: relative
,因此我们需要在此处添加 .position-relative
以防止链接超出父元素进行拉伸。
<div class="d-flex position-relative">
<img src="..." class="flex-shrink-0 me-3" alt="...">
<div>
<h5 class="mt-0">Custom component with stretched link</h5>
<p>This is some placeholder content for the custom component. It is intended to mimic what some real-world content would look like, and we're using it here to give the component a bit of body and size.</p>
<a href="#" class="stretched-link">Go somewhere</a>
</div>
</div>
<div class="row g-0 bg-body-secondary position-relative">
<div class="col-md-6 mb-md-0 p-md-4">
<img src="..." class="w-100" alt="...">
</div>
<div class="col-md-6 p-4 ps-md-0">
<h5 class="mt-0">Columns with stretched link</h5>
<p>Another instance of placeholder content for this other custom component. It is intended to mimic what some real-world content would look like, and we're using it here to give the component a bit of body and size.</p>
<a href="#" class="stretched-link">Go somewhere</a>
</div>
</div>
识别包含块
如果拉伸链接似乎不起作用,则 包含块 可能就是原因。以下 CSS 属性将使元素成为包含块
- 除
static
之外的position
值 - 除
none
之外的transform
或perspective
值 transform
或perspective
的will-change
值- 除
none
之外的filter
值或filter
的will-change
值(仅在 Firefox 中有效)
带有拉伸链接的卡片
一些快速示例文本,以构建在卡片标题上并构成卡片内容的大部分。
拉伸链接在这里不起作用,因为 position: relative
已添加到链接中
此 拉伸链接 将仅分布在 p
标记上,因为已对其应用了变换。
<div class="card" style="width: 18rem;">
<img src="..." class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">Card with stretched links</h5>
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
<p class="card-text">
<a href="#" class="stretched-link text-danger" style="position: relative;">Stretched link will not work here, because <code>position: relative</code> is added to the link</a>
</p>
<p class="card-text bg-body-tertiary" style="transform: rotate(0);">
This <a href="#" class="text-warning stretched-link">stretched link</a> will only be spread over the <code>p</code>-tag, because a transform is applied to it.
</p>
</div>
</div>