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bootstrap-4 - Bootstrap 4拆分按钮全宽

问题描述

如果您运行此代码片段full page，您将看到下拉菜单与插入符号左对齐并在容器外流血。如果您在屏幕尺寸与容器一样窄的地方运行它，则下拉菜单位于“保存”按钮下方。

问：有没有办法让它始终位于“保存”按钮下方？我不喜欢它离开容器。事实上，我可能应该使用 text-right 作为它的类。如果有的话，我希望它在插入符号的右侧边界处结束。

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<div class="container">
<form class="card">
  <div class="card-header">
    <div class="btn-group float-right">
      <button name="save" class="btn btn-primary">Save</button>
      <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown">
      </button>
      <div class="dropdown-menu">
        <button name="Delete" class="dropdown-item btn btn-outline-danger">Delete</button>
      </div>
    </div>
  </div>
</form>
</div>
<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>

标签： bootstrap-4

解决方案

我认为你只需要将这个类添加到你的下拉菜单引导类中：dropdown-menu-right

我做对了吗？

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<div class="container">
<form class="card">
  <div class="card-header">
    <div class="btn-group float-right">
      <button name="save" class="btn btn-primary">Save</button>
      <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown">
      </button>
      <div class="dropdown-menu dropdown-menu-right">
        <button name="Delete" class="dropdown-item btn btn-outline-danger">Delete</button>
      </div>
    </div>
  </div>
</form>
</div>
<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>

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