在 GitHub 上檢視
延伸連結
透過 CSS 「延伸」巢狀連結,讓任何 HTML 元素或 Bootstrap 元件都可點擊。
將 .stretched-link
加入連結,讓其 包含區塊 可透過 ::after
偽元素點擊。在大部分情況下,這表示包含具有 .stretched-link
類別連結的 position: relative;
元素可點擊。請注意,由於 CSS position
的運作方式,.stretched-link
無法與大多數表格元素混用。
Bootstrap 中的卡片預設為 position: relative
,因此在這種情況下,您可以安全地將 .stretched-link
類別加入卡片中的連結,而無需其他 HTML 變更。
不建議在延伸連結中使用多個連結和點選目標。不過,如果需要的話,一些 position
和 z-index
樣式可以提供協助。
<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>
媒體物件預設沒有 position: relative
,因此我們需要在此加入 .position-relative
,以防止連結延伸到媒體物件之外。
<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>
預設情況下,欄位是 position: relative
,因此可點擊欄位只需要連結上的 .stretched-link
類別。但是,要將連結延伸至整個 .row
,則需要在欄位上使用 .position-static
,在列上使用 .position-relative
。
<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>
識別包含區塊
如果延伸連結似乎無法正常運作,包含區塊可能是原因。下列 CSS 屬性會讓元素成為包含區塊
position
值為非static
transform
或perspective
值為非none
will-change
值為transform
或perspective
filter
值為非none
或will-change
值為filter
(僅適用於 Firefox)
具有延伸連結的卡片
一些簡短範例文字,用於建立在卡片標題上,並構成卡片內容的大部分。
延伸連結在此無法運作,因為連結已新增 position: relative
此 延伸連結 將僅散佈在 p
標籤上,因為已套用轉換。
<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>