Bootstrap 4中的左右对齐模式页脚按钮

76

Bootstrap 4将flex-box用于其模态页脚。如果我需要两个按钮，一个在左边，一个在右边，如何使其正常工作？

下面的代码尝试使用div.rowwith，col-sm-6但不起作用。

<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">
  Launch demo modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer">
      <div class="row">
        <div class="col-sm-6 text-left">
        <button type="button" class="btn btn-primary">Save changes</button>
        </div>
        <div class="col-sm-6 text-right">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        </div>
      </div>
      </div>
    </div>
  </div>
</div>
展开摘要

twitter-bootstrap  bootstrap-4  twitter-bootstrap-4 
— 肖恩
source

Answers:

166

既然modal-footer在Bootstrap 4中是“ display：flex”，那么使用自动边距将是最简单的。使用mr-auto左边按钮。

<div class="modal-footer">
     <button type="button" class="btn btn-primary mr-auto">Save changes</button>
     <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>

演示版

另请参见：在Bootstrap中的div内左对齐和右对齐

跟进评论“如果我需要右边的按钮来占据所有剩余空间怎么办？” -使用btn-block课程：

<div class="modal-footer">
     <button type="button" class="btn btn-primary text-nowrap">Save changes</button>
     <button type="button" class="btn btn-secondary btn-block ml-1" data-dismiss="modal">Close</button>
</div>
— 齐姆
source
1
谢谢，太好了。最后一件事-如果我fieldset混了怎么办？codeply.com/go/5WyUT4VA4n
— 肖恩
1
然后，我将使用w-100使其全宽并向右浮动：codeply.com/go/Eu0O9Lev5p
— Zim
4
太棒了！您是Bootstrap向导，非常感谢！
— 肖恩
1
mr-auto是解决方案。方便且易于使用的单个类。谢谢！
— 马特·科马尼克
如果我需要右边的按钮来占据剩余的所有空间怎么办？
— 安德列斯·SK
17

该modal-footer是display:flex;。因此，对齐其元素（例如按钮）的更好方法是使用flex规则。 Bootstrap 4提供了新的实用程序类来修改这些弹性规则（例如.justify-content-[modifier]）。因此，我认为一个更好的选择应该如下：

<div class="modal-footer justify-content-between">
  <button type="button" class="btn btn-primary">Save changes</button>
  <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>


<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">
  Launch demo modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer justify-content-between">
        <button type="button" class="btn btn-primary">Save changes</button>
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
      </div>
    </div>
  </div>
</div>
展开摘要

— Jmboiton
source
2
如果问题还涉及使用IE，则这是比其他方法更好的解决方案。
— cristiancajiaos
7

它在IE中的唯一工作方式是使用w-100。mx-auto和mr和ml-auto似乎都溢出了包含元素中的按钮。

<div class="modal-footer">
  <div class="w-100">
    <button type="button" class="btn btn-default">Cancel</button>
    <button type="button" class="btn btn-primary float-right">Save</button>
  </div>
</div>
— 瑞安·M
source
2

对于需要3个按钮的任何人，例如右边2个和左边1个：

<div class="modal-footer justify-content-between">                    
   <button type="submit" class="btn btn-danger">Delete</button>                                    
   <div>
       <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
       <button type="submit" class="btn btn-primary">Save changes</button>
   </div>  
</div>
— 迈克·博丁
source
1 
  <div class="modal-footer justify-content-start">
                    <input type="hidden" value="" name="">
                    <button id="pagePrintBtn" type="button" class="btn btn-primary">Print</button>
                    <button type="button" class="btn btn-secondary ml-auto" data-dismiss="modal">Delete</button>
                    <button type="button" class="btn btn-primary" id=asd>Save</button>
                </div>
— MT513
source
1

对于Bootstrap 4

我们使用Spacing，Bootstrap包括各种缩写和填充的响应余量实用程序类，以修改元素的外观。对于xs，使用{property} {sides- {size}格式，对于sm，md，lg和xl，使用{property} {sides- {breakpoint}-{size}格式命名类。

此处提供更多信息：https : //getbootstrap.com/docs/4.1/utilities/spacing/

<!--Footer-->
<div class="modal-footer">
  <button type="submit" class="btn btn-primary ml-auto">Enviar</button>
  <button type="button" class="btn btn-danger mr-auto" data-dismiss="modal">Cerrar</button>
</div>
— Gonen09
source
1

完全同意@Zim和@jmboiton

如果同时使用这两种方法，它将为所有人（包括IE用户：P）解决此问题。

总体上最好的解决方案是结合这样.justify-content-between的.mr-auto类：

<div class="modal-footer justify-content-between">
  <button type="button" class="btn btn-secondary mr-auto" type="button">Left Button</button>
  <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
  <button type="button" class="btn btn-primary">Save changes</button>
</div>


<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">
  Launch demo modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer justify-content-between">
          <button type="button" class="btn btn-secondary mr-auto" type="button">Left Button</button>
          <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
          <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>
展开摘要

— 克拉克营销传播
source
0

这很简单，对我有帮助 

 <div class="modal-footer">
 <button id="pagePrintBtn" type="button" class="btn btn-primary" style= "float: left;">Print</button>
 </div>
— 金宝片
source
0

对于IE，您可以.justify-content-between为父元素使用辅助类形式的bootstrap。在这种情况下.modal-footer。

例如：

<div class="modal-footer justify-content-between">
     <button type="button" class="btn btn-primary">Save changes</button>
     <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>
— 马库斯·克劳斯（Markus Krause）
source
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