Bootstrap4-dropdowns

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ブートストラップ4-ドロップダウン

説明

ドロップダウンメニューは、リスト形式でリンクを表示するための切り替え可能なコンテキストメニューです。

ドロップダウンを使用するには、ドロップダウンメニューを_.dropdown_クラス内にラップするだけです。 次の例は、基本的なドロップダウンメニューを示しています-

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>Basic Dropdown</h2>
         <div class = "row">
            <div class = "dropdown">
               <button class = "btn btn-info dropdown-toggle" type = "button"
                  id = "dropdownMenuButton" data-toggle = "dropdown" aria-haspopup = "true"
                  aria-expanded = "false">Dropdown button</button>

               <div class = "dropdown-menu" aria-labelledby = "dropdownMenuButton">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </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

分割ボタン付きのドロップダウン

。dropdown-toggle-splitclassを使用して、分割ボタンドロップダウンを作成できます。これにより、ドロップダウンキャレットとボタンの周りにスペースが提供されます。

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>Dropdown with Split Buttons</h2>
         <div class = "row">
            <div class = "btn-group">
               <button type = "button" class = "btn btn-primary">Primary</button>
               <button type = "button" class = "btn btn-primary
                  dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>

               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group">
               <button type = "button" class = "btn btn-secondary">Secondary</button>
               <button type = "button" class = "btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>

               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group">
               <button type =" button" class = "btn btn-success">Success</button>
               <button type = "button" class = "btn btn-success dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group">
               <button type = "button" class = "btn btn-info">Info</button>
               <button type = "button" class = "btn btn-info dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group">
               <button type = "button" class = "btn btn-warning">Warning</button>
               <button type = "button" class = "btn btn-warning dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group">
               <button type = "button" class = "btn btn-danger">Danger</button>
               <button type = "button" class = "btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle = "dropdown">
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </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

ドロップダウンサイズと分割ボタン

ドロップダウンボタンを含む_btn-lg_および_btn-sm_クラスを使用して、ドロップダウンボタンを大きいサイズと小さいサイズで表示できます。

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>Dropdown Sizes and Split Buttons</h2>
         <div class = "btn-group">
            <button class = "btn btn-info btn-lg dropdown-toggle" type = "button"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">

               Large button
            </button>
            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item" href =" #">Contact Us</a>
            </div>
         </div>

         <div class = "btn-group">
            <button class = "btn btn-info btn-lg" type = "button">
               Large split button
            </button>

            <button type = "button" class = "btn btn-lg btn-info dropdown-toggle dropdown-toggle-split"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">
               <span class = "sr-only">Toggle Dropdown</span>
            </button>

            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item" href = "#">Contact Us</a>
            </div>
         </div>
         <br>
         <br>

         <div class = "btn-group">
            <button class = "btn btn-info btn-sm dropdown-toggle" type = "button"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">

               Small button
            </button>
            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item" href = "#">Contact Us</a>
            </div>
         </div>

         <div class = "btn-group">
            <button class = "btn btn-info btn-sm" type = "button">
               Small split button
            </button>
            <button type = "button" class = "btn btn-sm btn-info dropdown-toggle dropdown-toggle-split"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">
               <span class = "sr-only">Toggle Dropdown</span>
            </button>

            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item" href = "#">Contact Us</a>
            </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

ドロップダウンの方向

クラス_.dropup_を使用してドロップダウンメニューを上に展開し、。dropright_または.dropleft_クラスを使用してドロップダウンメニューを左右に配置することもできます。 次の例は、ドロップダウンメニューの方向を示しています-

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">
         <br>
         <br>

         <h2>Dropdown Directions</h2>
         <br>
         <br>

         <div class = "row">
            <div class = "btn-group dropright">
               <button type = "button" class = "btn btn-info dropdown-toggle"
                  data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">
                  Dropright
               </button>

               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group dropup">
               <button type = "button" class = "btn btn-info dropdown-toggle"
                  data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">
                  Dropup
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </div>
            </div>
             

            <div class = "btn-group dropleft">
               <button type = "button" class = "btn btn-info dropdown-toggle"
                  data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">

                  Dropleft
               </button>
               <div class = "dropdown-menu">
                  <a class = "dropdown-item" href = "#">Home</a>
                  <a class = "dropdown-item" href = "#">About Us</a>
                  <a class = "dropdown-item" href = "#">Contact Us</a>
               </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

ヘッダー、ディバイダー、テキスト

.dropdown-header_クラスを使用してドロップダウンメニュー内にヘッダーを追加し、。dropdown-divider_クラスは細い水平の境界線でドロップダウンメニューに仕切りを追加し、_。dropdown-item-text_クラスを使用してテキストを配置しますドロップダウンメニュー。

次の例は、上記のクラスを使用して、ヘッダー、ディバイダー、テキストの作成を示しています-

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>Headers</h2>
         <div class = "btn-group dropright">
            <button type = "button" class = "btn btn-info dropdown-toggle"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">

               Headers Example
            </button>
            <div class = "dropdown-menu p-4 text-muted">
               <h6 class = "dropdown-header">This is Header</h6>
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item" href = "#">Contact Us</a>
            </div>
         </div>
         <br>
         <br>

         <h2>Dividers</h2>
         <div class = "btn-group dropright">
            <button type = "button" class = "btn btn-info dropdown-toggle"
               data-toggle = "dropdown" aria-haspopup = "true" aria-expanded = "false">

               Dividers Example
            </button>
            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <div class = "dropdown-divider"></div>
               <a class = "dropdown-item" href = "#">Contact Us</a>
            </div>
         </div>
         <br>
         <br>

         <h2>Text</h2>
         <div class = "dropdown">
            <button type = "button" class = "btn btn-info dropdown-toggle" data-toggle = "dropdown">
               Dropdown button
            </button>
            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item" href = "#">About Us</a>
               <a class = "dropdown-item-text" href = "#">This is Text Link</a>
               <span class = "dropdown-item-text" href = "#">Thi is just Text</span>
            </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

アクティブおよび無効なアイテム

.active_クラスをドロップダウンメニューのアイテムに追加し、。disabled_クラスを使用してドロップダウンメニューのアイテムを無効にすることで、アイテムをアクティブにできます。

次の例は、ドロップダウンメニューのアクティブなアイテムと無効なアイテムを示しています-

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>Active and Disabled item</h2>
         <div class = "dropdown">
            <button type = "button" class = "btn btn-info dropdown-toggle"
               data-toggle = "dropdown">

               Dropdown button
            </button>

            <div class = "dropdown-menu">
               <a class = "dropdown-item" href = "#">Home</a>
               <a class = "dropdown-item active" href = "#">About Us - Active Item</a>
               <a class = "dropdown-item disabled" href = "#">Contct Us - Disabled Item</a>
            </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

「https://www.finddevguides.com/index.php?title=Bootstrap4-dropdowns&oldid=7374」から取得
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