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Bootstrap4 折疊板

2018-05-30 10:17 更新

折疊板可以實(shí)現(xiàn)內(nèi)容的顯示與隱藏，讓頁(yè)面排版更加簡(jiǎn)潔。那么在Bootstrap4中，如何實(shí)現(xiàn)折疊板功能呢？

簡(jiǎn)單折疊板

.collapse 類用于指定一個(gè)折疊元素 (實(shí)例中的 <div>); 點(diǎn)擊按鈕后會(huì)在隱藏與顯示之間切換。

控制內(nèi)容的隱藏與顯示，需要在 <a> 或 <button> 元素上添加 data-toggle="collapse" 屬性。 data-target="#id" 屬性是對(duì)應(yīng)折疊的內(nèi)容 (<div id="demo">)。

實(shí)例：

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap4 實(shí)例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/popper.js/1.12.5/umd/popper.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/bootstrap/4.1.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>
<div class="container">
  <h2>簡(jiǎn)單的折疊</h2>
  <p>點(diǎn)擊按鈕內(nèi)容會(huì)再顯示與隱藏之間切換。</p>
  <button type="button" class="btn btn-primary" data-toggle="collapse" data-target="#demo">簡(jiǎn)單的折疊</button>
  <div id="demo" class="collapse">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit,
    sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  </div>
</div>
</body>
</html>

注意： <a> 元素上你可以使用 href 屬性來(lái)代替 data-target 屬性:

實(shí)例：

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap4 實(shí)例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/popper.js/1.12.5/umd/popper.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/bootstrap/4.1.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>
<div class="container">
  <h2>簡(jiǎn)單的折疊</h2>
  <a href="#demo" class="btn btn-primary" data-toggle="collapse">簡(jiǎn)單的折疊</a>
  <div id="demo" class="collapse">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit,
    sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  </div>
</div>
</body>
</html>

默認(rèn)顯示內(nèi)容

在Bootstrap4中，折疊的內(nèi)容是默認(rèn)隱藏的，我們可以通過(guò)添加 .show 類讓內(nèi)容默認(rèn)顯示:

實(shí)例：

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap4 實(shí)例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/popper.js/1.12.5/umd/popper.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/bootstrap/4.1.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>
<div class="container">
  <h2>簡(jiǎn)單的折疊</h2>
  <p>你可以添加 .show 類讓內(nèi)容默認(rèn)顯示:</p>
  <button type="button" class="btn btn-primary" data-toggle="collapse" data-target="#demo">簡(jiǎn)單的折疊</button>
  <div id="demo" class="collapse show">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit,
    sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  </div>
</div>
</body>
</html>

手風(fēng)琴實(shí)例

以下實(shí)例通過(guò)擴(kuò)展卡片組件來(lái)顯示簡(jiǎn)單的手風(fēng)琴。

注意: 使用 data-parent 屬性來(lái)確保所有的折疊元素在指定的父元素下，這樣就能實(shí)現(xiàn)在一個(gè)折疊選項(xiàng)顯示時(shí)其他選項(xiàng)就隱藏。

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap4 實(shí)例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/popper.js/1.12.5/umd/popper.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="https://cdn.bootcss.com/bootstrap/4.1.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>
<div class="container">
  <h2>手風(fēng)琴實(shí)例</h2>
  <p><strong>注意:</strong>  使用 data-parent 屬性來(lái)確保所有的折疊元素在指定的父元素下，這樣就能實(shí)現(xiàn)在一個(gè)折疊選項(xiàng)顯示時(shí)其他選項(xiàng)就隱藏。</p>
  <div id="accordion">
    <div class="card">
      <div class="card-header">
        <a class="card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
          Collapsible Group Item #1
        </a>
      </div>
      <div id="collapseOne" class="collapse show">
        <div class="card-block">
          Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
        </div>
      </div>
    </div>
    <div class="card">
      <div class="card-header">
        <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
        Collapsible Group Item #2
      </a>
      </div>
      <div id="collapseTwo" class="collapse">
        <div class="card-block">
          Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
        </div>
      </div>
    </div>
    <div class="card">
      <div class="card-header">
        <a class="collapsed card-link" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
          Collapsible Group Item #3
        </a>
      </div>
      <div id="collapseThree" class="collapse">
        <div class="card-block">
          Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
        </div>
      </div>
    </div>
  </div>
</div>
</body>
</html>

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