in English
拉伸鏈接
通過 CSS“拉伸”嵌套鍊接,使任何 HTML 元素或 Bootstrap 組件可點擊。
添加.stretched-link
到鏈接以使其包含塊可通過::after
偽元素單擊。在大多數情況下,這意味著position: relative;
包含.stretched-link
類鏈接的元素是可點擊的。請注意CSS的position
工作原理,.stretched-link
不能與大多數表格元素混合使用。
Bootstrap 中默認有卡片position: relative
,因此在這種情況下,您可以安全地將.stretched-link
類添加到卡片中的鏈接,而無需任何其他 HTML 更改。
不建議使用拉伸鏈接使用多個鏈接和點擊目標。但是,如果需要,一些position
和z-index
样式可以提供幫助。
<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>
媒體對象默認是沒有position: relative
的,所以我們需要在.position-relative
此處添加,以防止鏈接拉伸到媒體對象之外。
<div class="media position-relative">
<img src="..." class="mr-3" alt="...">
<div class="media-body">
<h5 class="mt-0">Media with stretched link</h5>
<p>This is some placeholder content for the media object. 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>
列是position: relative
默認的,所以可點擊的列只需要.stretched-link
鏈接上的類。但是,將鏈接延伸到整個區域.row
需要.position-static
在列和.position-relative
行上。
<div class="row no-gutters bg-light 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 position-static p-4 pl-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>
識別包含塊
如果拉伸的鏈接似乎不起作用,則可能是包含塊。以下 CSS 屬性將使元素成為包含塊:
- 以外的
position
值static
- A
transform
或perspective
其他值none
will-change
值為transform
或_perspective
- 一個
filter
不同於none
或一個will-change
值filter
(僅適用於 Firefox)
帶有拉伸鏈接的卡片
一些快速的示例文本以卡片標題為基礎,並構成卡片的大部分內容。
拉伸鏈接在這裡不起作用,因為position: relative
被添加到鏈接中
此拉伸鏈接將僅分佈在p
-tag 上,因為對其應用了轉換。
<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-light" 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>