Bootstrap4-collapse

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ブートストラップ4-折りたたみ

説明

Collapseコンポーネントは、_。collapse_クラスを使用してコンテンツを表示または非表示にするために使用されます。 _data-toggle = "collapse" _属性のアンカーまたはボタン要素を追加することにより、コンテンツを折りたたむことができます。 これらの要素のIDは、データを折りたたむためにコンテンツのIDを参照します。

リンクを使用して折りたたむ

折りたたむコンテンツのIDのhref値を使用して、<a>タグでコンテンツを折りたたむことができます。

次の例はこれを示しています-

例

<html lang = "en">
   <head>
      <!-- Meta tags -->
      <meta charset = "utf-8">
      <meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">

      <!-- Bootstrap CSS -->
      <link rel = "stylesheet"
         href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
         integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
         crossorigin = "anonymous">

      <title>Bootstrap 4 Example</title>
   </head>

   <body>
      <div class = "container">
         <h2>Collapse with Link</h2>
         <p>
            <a class = "btn btn-info" data-toggle = "collapse"
               href = "#collapsewithlink" role = "button" aria-expanded = "false"
               aria-controls = "collapsewithlink">Click Me</a>
         </p>

         <div class = "collapse" id = "collapsewithlink">
            <div class = "card card-body">
               Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
               tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
               veniam, quis nostrud exercitation.
            </div>
         </div>
      </div>

      <!-- jQuery first, then Popper.js, then Bootstrap JS -->
      <script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
         integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
         crossorigin = "anonymous">
      </script>

      <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
         integrity = "sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
         crossorigin = "anonymous">
      </script>

      <script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
         integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
         crossorigin = "anonymous">
      </script>

   </body>
</html>

それは次の結果を生成します-

出力

ボタンを使用して折りたたむ

折りたたむコンテンツのIDの値で_data-target_属性を使用することにより、<button>タグでコンテンツを折りたたむことができます。

次の例はこれを示しています-

例

<html lang = "en">
   <head>
      <!-- Meta tags -->
      <meta charset = "utf-8">
      <meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">

      <!-- Bootstrap CSS -->
      <link rel = "stylesheet"
         href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
         integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
         crossorigin = "anonymous">
      <title>Bootstrap 4 Example</title>
   </head>

   <body>
      <div class = "container">
         <h2>Collapse with Button</h2>
         <p>
            <button class = "btn btn-indo" type = "button" data-toggle = "collapse"
               data-target = "#collapsewithbutton" aria-expanded = "false"
               aria-controls = "collapsewithbutton">Click Me</button>
         </p>

         <div class = "collapse" id = "collapsewithbutton">
            <div class = "card card-body">
               Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
               tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
               veniam, quis nostrud exercitation.
            </div>
         </div>
      </div>

      <!-- jQuery first, then Popper.js, then Bootstrap JS -->
      <script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
         integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
         crossorigin = "anonymous">
      </script>

      <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
         integrity = "sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
         crossorigin = "anonymous">
      </script>

      <script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
         integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
         crossorigin = "anonymous">
      </script>

   </body>
</html>

それは次の結果を生成します-

出力

アコーディオン

折りたたみ可能なコンテンツを使用して、よくある質問、概要などのコンテンツによく使用される_アコーディオン_を作成できます。

以下の例では、カードコンポーネントを拡張することで簡単なアコーディオンを指定しています-

例

<html lang = "en">
   <head>
      <!-- Meta tags -->
      <meta charset = "utf-8">
      <meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">

      <!-- Bootstrap CSS -->
      <link rel = "stylesheet"
         href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
         integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
         crossorigin = "anonymous">

      <title>Bootstrap 4 Example</title>
   </head>

   <body>
      <div class = "container">
         <h2>Accordion </h2>
         <div id = "accordion">
            <div class = "card">
               <div class = "card-header">
                  <a class = "card-link" data-toggle = "collapse" href = "#collapseOne">
                     Accordion #1
                  </a>
               </div>

               <div id = "collapseOne" class = "collapse show" data-parent = "#accordion">
                  <div class = "card-body">Content for Accordion #1.</div>
               </div>
            </div>

            <div class = "card">
               <div class = "card-header">
                  <a class = "collapsed card-link" data-toggle = "collapse" href = "#collapseTwo">
                     Accordion #2
                  </a>
               </div>

               <div id = "collapseTwo" class = "collapse" data-parent = "#accordion">
                  <div class = "card-body">Content for Accordion #2.</div>
               </div>
            </div>

            <div class = "card">
               <div class = "card-header">
                  <a class = "collapsed card-link" data-toggle = "collapse" href = "#collapseThree">
                     Accordion #3
                  </a>
               </div>

               <div id = "collapseThree" class = "collapse" data-parent = "#accordion">
                  <div class = "card-body"> Content for Accordion #3.</div>
               </div>
            </div>

         </div>
      </div>

      <!-- jQuery first, then Popper.js, then Bootstrap JS -->
      <script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
         integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
         crossorigin = "anonymous">
      </script>

      <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
         integrity = "sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
         crossorigin = "anonymous">
      </script>

      <script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
         integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
         crossorigin = "anonymous">
      </script>

   </body>
</html>

それは次の結果を生成します-

出力

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