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手風琴

結合我們的 Collapse JavaScript 插件構建垂直折疊手風琴。

在本頁面

這個怎麼運作

手風琴在內部使用折疊使其可折疊。要渲染展開的手風琴，請.open在.accordion.

該組件的動畫效果依賴於 prefers-reduced-motion媒體查詢。請參閱 我們可訪問性文檔的減少運動部分。

例子

單擊下面的手風琴展開/折疊手風琴內容。

這是第一個項目的手風琴體。它默認顯示，直到折疊插件添加我們用來設置每個元素樣式的適當類。這些類控制整體外觀，以及通過 CSS 過渡顯示和隱藏。您可以使用自定義 CSS 或覆蓋我們的默認變量來修改其中的任何內容。還值得注意的是，幾乎任何 HTML 都可以進入 .accordion-body.

This is the second item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the third item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.
html 
<div class="accordion" id="accordionExample">
  <div class="accordion-item">
    <h2 class="accordion-header" id="headingOne">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="collapseOne" class="accordion-collapse collapse show" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="collapseTwo" class="accordion-collapse collapse" aria-labelledby="headingTwo" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="headingThree">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="collapseThree" class="accordion-collapse collapse" aria-labelledby="headingThree" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the third item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
</div>

沖洗

添加.accordion-flush以刪除默認值background-color、一些邊框和一些圓角，以使用其父容器邊對邊渲染手風琴。

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the second item's accordion body. Let's imagine this being filled with some actual content.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.
html 
<div class="accordion accordion-flush" id="accordionFlushExample">
  <div class="accordion-item">
    <h2 class="accordion-header" id="flush-headingOne">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseOne" aria-expanded="false" aria-controls="flush-collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="flush-collapseOne" class="accordion-collapse collapse" aria-labelledby="flush-headingOne" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="flush-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseTwo" aria-expanded="false" aria-controls="flush-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="flush-collapseTwo" class="accordion-collapse collapse" aria-labelledby="flush-headingTwo" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the second item's accordion body. Let's imagine this being filled with some actual content.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="flush-headingThree">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseThree" aria-expanded="false" aria-controls="flush-collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="flush-collapseThree" class="accordion-collapse collapse" aria-labelledby="flush-headingThree" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.</div>
    </div>
  </div>
</div>

始終打開

省略data-bs-parent每個屬性.accordion-collapse以使手風琴項在打開另一個項時保持打開狀態。

這是第一個項目的手風琴體。它默認顯示，直到折疊插件添加我們用來設置每個元素樣式的適當類。這些類控制整體外觀，以及通過 CSS 過渡顯示和隱藏。您可以使用自定義 CSS 或覆蓋我們的默認變量來修改其中的任何內容。還值得注意的是，幾乎任何 HTML 都可以進入 .accordion-body.

This is the second item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the third item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.
html 
<div class="accordion" id="accordionPanelsStayOpenExample">
  <div class="accordion-item">
    <h2 class="accordion-header" id="panelsStayOpen-headingOne">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne" aria-expanded="true" aria-controls="panelsStayOpen-collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="panelsStayOpen-collapseOne" class="accordion-collapse collapse show" aria-labelledby="panelsStayOpen-headingOne">
      <div class="accordion-body">
        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="panelsStayOpen-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseTwo" aria-expanded="false" aria-controls="panelsStayOpen-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="panelsStayOpen-collapseTwo" class="accordion-collapse collapse" aria-labelledby="panelsStayOpen-headingTwo">
      <div class="accordion-body">
        <strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="panelsStayOpen-headingThree">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseThree" aria-expanded="false" aria-controls="panelsStayOpen-collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="panelsStayOpen-collapseThree" class="accordion-collapse collapse" aria-labelledby="panelsStayOpen-headingThree">
      <div class="accordion-body">
        <strong>This is the third item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
</div>

可訪問性

請閱讀折疊可訪問性部分以獲取更多信息。

CSS

變量

在 v5.2.0 中添加

作為 Bootstrap 不斷發展的 CSS 變量方法的一部分，手風琴現在使用本地 CSS 變量.accordion來增強實時定制。CSS 變量的值是通過 Sass 設置的，因此仍然支持 Sass 自定義。

  --#{$prefix}accordion-color: #{$accordion-color};
  --#{$prefix}accordion-bg: #{$accordion-bg};
  --#{$prefix}accordion-transition: #{$accordion-transition};
  --#{$prefix}accordion-border-color: #{$accordion-border-color};
  --#{$prefix}accordion-border-width: #{$accordion-border-width};
  --#{$prefix}accordion-border-radius: #{$accordion-border-radius};
  --#{$prefix}accordion-inner-border-radius: #{$accordion-inner-border-radius};
  --#{$prefix}accordion-btn-padding-x: #{$accordion-button-padding-x};
  --#{$prefix}accordion-btn-padding-y: #{$accordion-button-padding-y};
  --#{$prefix}accordion-btn-color: #{$accordion-button-color};
  --#{$prefix}accordion-btn-bg: #{$accordion-button-bg};
  --#{$prefix}accordion-btn-icon: #{escape-svg($accordion-button-icon)};
  --#{$prefix}accordion-btn-icon-width: #{$accordion-icon-width};
  --#{$prefix}accordion-btn-icon-transform: #{$accordion-icon-transform};
  --#{$prefix}accordion-btn-icon-transition: #{$accordion-icon-transition};
  --#{$prefix}accordion-btn-active-icon: #{escape-svg($accordion-button-active-icon)};
  --#{$prefix}accordion-btn-focus-border-color: #{$accordion-button-focus-border-color};
  --#{$prefix}accordion-btn-focus-box-shadow: #{$accordion-button-focus-box-shadow};
  --#{$prefix}accordion-body-padding-x: #{$accordion-body-padding-x};
  --#{$prefix}accordion-body-padding-y: #{$accordion-body-padding-y};
  --#{$prefix}accordion-active-color: #{$accordion-button-active-color};
  --#{$prefix}accordion-active-bg: #{$accordion-button-active-bg};

Sass 變量

$accordion-padding-y:                     1rem;
$accordion-padding-x:                     1.25rem;
$accordion-color:                         var(--#{$prefix}body-color);
$accordion-bg:                            $body-bg;
$accordion-border-width:                  $border-width;
$accordion-border-color:                  var(--#{$prefix}border-color);
$accordion-border-radius:                 $border-radius;
$accordion-inner-border-radius:           subtract($accordion-border-radius, $accordion-border-width);

$accordion-body-padding-y:                $accordion-padding-y;
$accordion-body-padding-x:                $accordion-padding-x;

$accordion-button-padding-y:              $accordion-padding-y;
$accordion-button-padding-x:              $accordion-padding-x;
$accordion-button-color:                  $accordion-color;
$accordion-button-bg:                     var(--#{$prefix}accordion-bg);
$accordion-transition:                    $btn-transition, border-radius .15s ease;
$accordion-button-active-bg:              tint-color($component-active-bg, 90%);
$accordion-button-active-color:           shade-color($primary, 10%);

$accordion-button-focus-border-color:     $input-focus-border-color;
$accordion-button-focus-box-shadow:       $btn-focus-box-shadow;

$accordion-icon-width:                    1.25rem;
$accordion-icon-color:                    $accordion-button-color;
$accordion-icon-active-color:             $accordion-button-active-color;
$accordion-icon-transition:               transform .2s ease-in-out;
$accordion-icon-transform:                rotate(-180deg);

$accordion-button-icon:         url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$accordion-icon-color}'><path fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/></svg>");
$accordion-button-active-icon:  url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$accordion-icon-active-color}'><path fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/></svg>");