具有块级别的Bootstrap下拉按钮？

Question

我正在尝试使用bootstrap 3 下拉列表按钮接受全宽（.btn-block类）属性。使用下拉按钮似乎与使用常规按钮的工作方式不同。这是我目前的代码：

<div class="row">
  <div class="col-md-6 col-sm-6 col-xs-6">
    <!-- Single button -->
    <div class="btn-group">
      <button type="button" class="btn btn-primary btn-block dropdown-toggle" data-toggle="dropdown">
        <span class="glyphicon glyphicon-cog"></span> Dealer Tools  <span class="caret"></span>
      </button>
      <ul class="dropdown-menu" role="menu">
         <li><a href="#"><span class="glyphicon glyphicon-user"></span> Dealer Area</a></li>
         <li class="divider"></li>
         <li><a href="#"><span class="glyphicon glyphicon-phone"></span> App Registration</a></li>   
      </ul>
    </div>
    <!-- Single button -->
  </div>
  <div class="col-md-6 col-sm-6 col-xs-6">
    <a href="http://www.agrigro.com/testarea/contact-us/">
      <button type="button" class="btn btn-primary btn-block">
        <span class="glyphicon glyphicon-envelope"></span>  CONTACT US
      </button>
    </a>
  </div>
</div>

如何让它正常工作，以便下拉按钮占用完整的col-6？

Answer 1

将btn-block同时应用于btn-group和btn

<div class="btn-group btn-block">
  <button type="button" class="btn btn-block btn-primary dropdown-toggle" data-toggle="dropdown"><span class="glyphicon glyphicon-cog"></span> Dealer Tools  <span class="caret"></span>
  </button>
  <ul class="dropdown-menu" role="menu">
 <li><a href="#"><span class="glyphicon glyphicon-user"></span> Dealer Area</a></li>
        <li class="divider"></li>
         <li><a href="#"><span class="glyphicon glyphicon-phone"></span> App Registration</a></li>   
  </ul>
</div>

演示：http://bootply.com/101166

Answer 2

使用下拉菜单时，首先将btn-block应用于btn-group，然后添加col - ？ - ？在按钮的类中控制按钮部分的宽度。方便的小技巧。

 <!-- Split button -->
    <div class="btn-group btn-block">
      <button type="button" class="btn col-lg-10 btn-lg btn-danger">Action</button>
      <button type="button" class="btn col-lg-2 btn-lg btn-danger dropdown-toggle" data-toggle="dropdown">
        <span class="caret"></span>
        <span class="sr-only">Toggle Dropdown</span>
      </button>
      <ul class="dropdown-menu col-lg-12" role="menu">
        <li><a href="#">Action</a></li>
        <li><a href="#">Another action</a></li>
        <li><a href="#">Something else here</a></li>
        <li class="divider"></li>
        <li><a href="#">Separated link</a></li>
      </ul>
    </div>

Answer 3

<div class="btn-group btn-block">
    <button type="button" class="btn btn-default btn-block dropdown-toggle" data-toggle="dropdown">
        <span class="col-lg-10">
            Button dropdown
        </span> 
        <span class="col-lg-2">
            <span class="caret"></span>
        </span>
    </button>
    <ul class="dropdown-menu btn-block" role="menu">
    <li><a href="#">Action</a></li>
    <li><a href="#">Another action</a></li>
    <li><a href="#">Something else here</a></li>
    <li class="divider"></li>
    <li><a href="#">Separated link</a></li>
    </ul>
</div>

Answer 4

单键下拉 @Skelly answer有效。对于拆分按钮下拉列表，我从 Dave Ward Using btn-block with Bootstrap 3 dropdown button groups得到了答案。

他使用col-*-*分割按钮

<div class="col-sm-6">
  <button class="btn btn-block btn-lg btn-success">Approve</button>
</div>

<div class="col-sm-6">
  <div class="btn-group btn-block">
    <button class="col-sm-10 btn btn-lg btn-danger">Deny</button>

    <button class="col-sm-2 btn btn-lg btn-danger dropdown-toggle"
            data-toggle="dropdown">
      <span class="caret"></span>
    </button>

    <ul class="dropdown-menu btn-block">
      <li><a href="#">Reason 1</a></li>
      <li><a href="#">Reason 2</a></li>
      <li><a href="#">Reason 3</a></li>
    </ul>
  </div>
</div>

Answer 5

我有一个不同的设置，但是使用Javascript，React Bootstrap 1.3.0和React 16.9.0对我有用的是将块参数同时应用于Dropdown和Dropdown.Toggle：

import Dropdown from 'react-bootstrap/Dropdown';
import 'bootstrap/dist/css/bootstrap.min.css';

<Dropdown block>
  <Dropdown.Toggle block> Label for the button when collapsed </Dropdown.Toggle>
  <Dropdown.Menu>
    <Dropdown.Item>Option 1</Dropdown.Item>
    <Dropdown.Item>Option 2</Dropdown.Item>
    <Dropdown.Item>Option 3</Dropdown.Item>
  </Dropdown.Menu>
</Dropdown>