使用 Bootstrap 将下拉菜单右对齐

要将下拉菜单右对齐，请将 class .pull-right 添加到 .dropdown-menu。你可以运行以下代码尝试将下拉菜单右对齐

示例

现场演示

<!DOCTYPE html>
<html>
   <head>
      <title>Bootstrap Example</title>
      <link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
      <script src = "/scripts/jquery.min.js"></script>
      <script src = "/bootstrap/js/bootstrap.min.js"></script>
   </head>
   <body>
      <div class = "dropdown">
         <button type = "button" class = "btn dropdown-toggle" id = "dropdownMenu1" data-toggle = "dropdown">
            Cars
            <span class = "caret"></span>
         </button>
         <ul class = "dropdown-menu pull-right" role = "menu" aria-labelledby = "dropdownMenu1">
            <li role = "presentation">
               <a role = "menuitem" tabindex = "-1" href = "#">BMW</a>
            </li>
            <li role = "presentation">
               <a role = "menuitem" tabindex = "-1" href = "#">Audi</a>
            </li>
            <li role = "presentation">
               <a role = "menuitem" tabindex = "-1" href = "#">
                  Hyundai
               </a>
            </li>
            <li role = "presentation">
               <a role = "menuitem" tabindex = "-1" href = "#">
                  Mitsubishi
               </a>
            </li>
            <li role = "presentation">
               <a role = "menuitem" tabindex = "-1" href = "#">
                  Nissan
               </a>
            </li>
         </ul>
      </div>
   </body>
</html>

更新于：12-6-2020

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