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分頁 (Pagination)
用於指向一系列跨頁面相關內容的分頁之文件和範例。
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概觀
我們在分頁中使用大量的連結,使它們不易遺漏、能輕鬆擴展,同時提供更大的點擊區域。分頁是使用 HTML 中的列表元素,因此螢幕閱讀器可以讀取可用的連結數量。在外層使用 <nav>
元素讓螢幕閱讀器和其他輔助技術用來識別為導航區塊。
此外,網頁中可能會有更多這樣的導航區塊,因此 <nav>
最好提供具描述性的 aria-label
來表示它的目的性。舉例來說,如果分頁元件被用來搜尋結果區塊,則適當的標籤為 aria-label="Search results pages"
.
<nav aria-label="Page navigation example">
<ul class="pagination">
<li class="page-item"><a class="page-link" href="#">Previous</a></li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item"><a class="page-link" href="#">Next</a></li>
</ul>
</nav>
使用 icons
想要在分頁使用 icon 或是符號來取代文字?請確保 aria
的描述可提供給螢幕閱讀器讀取。
<nav aria-label="Page navigation example">
<ul class="pagination">
<li class="page-item">
<a class="page-link" href="#" aria-label="Previous">
<span aria-hidden="true">«</span>
</a>
</li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item">
<a class="page-link" href="#" aria-label="Next">
<span aria-hidden="true">»</span>
</a>
</li>
</ul>
</nav>
禁用和啟用狀態
分頁可針對不同的情況進行客製。使用 .disabled
來顯示禁用狀態、 .active
顯示當前頁數。
雖然 .disabled
這個 class 使用了 pointer-events: none
來 嘗試 禁用 a 連結功能,這個屬性在 CSS 還是未標準化的,因為鍵盤導覽仍不受影響。因此,您應該在禁用的連結增加 tabindex="-1"
,並使用自定義的 JavaScript 來完全的禁用它。
<nav aria-label="...">
<ul class="pagination">
<li class="page-item disabled">
<a class="page-link">Previous</a>
</li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item active" aria-current="page">
<a class="page-link" href="#">2</a>
</li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item">
<a class="page-link" href="#">Next</a>
</li>
</ul>
</nav>
您可以選擇將 active 或 disabled 的錨點改為 <span>
,或是在上一個/下一個箭頭的情況下,省略連結以刪除點擊功能,在保留預期樣式的同時防止鍵盤 focus。
<nav aria-label="...">
<ul class="pagination">
<li class="page-item disabled">
<span class="page-link">Previous</span>
</li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item active" aria-current="page">
<span class="page-link">2</span>
</li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item">
<a class="page-link" href="#">Next</a>
</li>
</ul>
</nav>
尺寸
喜歡更大或更小的分頁? 加上 .pagination-lg
or .pagination-sm
套用其他尺寸。
<nav aria-label="...">
<ul class="pagination pagination-lg">
<li class="page-item active" aria-current="page">
<span class="page-link">1</span>
</li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
</ul>
</nav>
<nav aria-label="...">
<ul class="pagination pagination-sm">
<li class="page-item active" aria-current="page">
<span class="page-link">1</span>
</li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
</ul>
</nav>
對齊
使用 flexbox 通用類別 更改分頁的對齊方式。
<nav aria-label="Page navigation example">
<ul class="pagination justify-content-center">
<li class="page-item disabled">
<a class="page-link">Previous</a>
</li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item">
<a class="page-link" href="#">Next</a>
</li>
</ul>
</nav>
<nav aria-label="Page navigation example">
<ul class="pagination justify-content-end">
<li class="page-item disabled">
<a class="page-link">Previous</a>
</li>
<li class="page-item"><a class="page-link" href="#">1</a></li>
<li class="page-item"><a class="page-link" href="#">2</a></li>
<li class="page-item"><a class="page-link" href="#">3</a></li>
<li class="page-item">
<a class="page-link" href="#">Next</a>
</li>
</ul>
</nav>
Sass
Variables
$pagination-padding-y: .375rem;
$pagination-padding-x: .75rem;
$pagination-padding-y-sm: .25rem;
$pagination-padding-x-sm: .5rem;
$pagination-padding-y-lg: .75rem;
$pagination-padding-x-lg: 1.5rem;
$pagination-color: $link-color;
$pagination-bg: $white;
$pagination-border-width: $border-width;
$pagination-border-radius: $border-radius;
$pagination-margin-start: -$pagination-border-width;
$pagination-border-color: $gray-300;
$pagination-focus-color: $link-hover-color;
$pagination-focus-bg: $gray-200;
$pagination-focus-box-shadow: $input-btn-focus-box-shadow;
$pagination-focus-outline: 0;
$pagination-hover-color: $link-hover-color;
$pagination-hover-bg: $gray-200;
$pagination-hover-border-color: $gray-300;
$pagination-active-color: $component-active-color;
$pagination-active-bg: $component-active-bg;
$pagination-active-border-color: $pagination-active-bg;
$pagination-disabled-color: $gray-600;
$pagination-disabled-bg: $white;
$pagination-disabled-border-color: $gray-300;
$pagination-transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;
$pagination-border-radius-sm: $border-radius-sm;
$pagination-border-radius-lg: $border-radius-lg;
Mixins
@mixin pagination-size($padding-y, $padding-x, $font-size, $border-radius) {
.page-link {
padding: $padding-y $padding-x;
@include font-size($font-size);
}
.page-item {
@if $pagination-margin-start == (-$pagination-border-width) {
&:first-child {
.page-link {
@include border-start-radius($border-radius);
}
}
&:last-child {
.page-link {
@include border-end-radius($border-radius);
}
}
} @else {
//Add border-radius to all pageLinks in case they have left margin
.page-link {
@include border-radius($border-radius);
}
}
}
}