如何左对齐引导3下拉菜单？ [英] How to left align bootstrap 3 dropdown menu?

问题描述

>

上面的图像MenuItems对齐到MyMenu的右边，我需要左对齐MyMenu的MenuItem（我的意思是它必须对齐到MyMenu的左边缘），我尝试使用拉左和拉右类像< ul class =dropdown-menu pull-leftrole =menu>

 <$ c $ 
 
 
 
这是我的代码
 c><！ -  Static navbar  - > 
< nav class =navbar navbar-inverserole =navigation> 
< div class =container-fluid> 
< div class =navbar-header> 
< button type =buttonclass =navbar-toggle collapseddata-toggle =collapsedata-target =＃navbararia-expanded =falsearia-controls =navbar ; 
< span class =sr-only>切换导航< / span> 
< span class =icon-bar>< / span> 
< span class =icon-bar>< / span> 
< span class =icon-bar>< / span> 
< / button> 
< a class =navbar-brandhref =＃>< / a> 
< / div> 
< div id =navbarclass =navbar-collapse collapse> 
 
< ul class =nav navbar-nav navbar-right text-uppercase> 
< li>< a id =首页href =index.html>首页< / a>< / li> 
<！ -  Visa drapdown  - > 
< li class =dropdown> 
< a href =＃class =dropdown-toggledata-toggle =dropdown>我的菜单< span class =caret>< / span>< / a> 
 
< ul class =dropdown-menu pull-leftrole =menu> 
< li>< a href =＃>菜单项01< / a>< / li> 
< li>< a href =＃>菜单项01< / a>< / li> 
< li>< a href =＃>菜单项02< / a>< / li> 
< li>< a href =＃>菜单项03< / a>< / li> 
< li>< a href =＃>菜单项04< / a>< / li> 
< li>< a href =＃>< / a>< / li> 
 
< / ul> 
 
< / li> 
 
< / div><！ -  /。nav-collapse  - > 
< / div><！ -  /。container-fluid  - > 
< / nav> 
  

解决方案

将此样式元素添加到下拉菜单< ul> 会将下拉列表对齐到菜单项的左侧：

  left：0; 
  

查看此 Bootply ，其定位 .dropdown-menu.pull-left 并添加 left：0; 。
这应该可以解决你的问题。

---

更新
$ b

我看到Bootstrap有弃用 pull-right和pull-left作为Bootstrap 3.1.0。使用 dropdown-menu-left 类来使用内置的Bootstrap css来对齐左边缘的下拉菜单，这样就不需要额外的CSS。查看此更新的 Bootply

In the above image MenuItems are align to right side of the MyMenu, I needed to left align the MenuItems of MyMenu (I mean it must aligned to left edge of MyMenu), I try to use pull-left and pull-right class like <ul class="dropdown-menu pull-left" role="menu"> with my code, but it doesn't work. anyone has an idea how to do this ?

Here is my code

<!-- Static navbar -->
    <nav class="navbar navbar-inverse" role="navigation">
      <div class="container-fluid">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#"></a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">

              <ul class="nav navbar-nav navbar-right text-uppercase">
                <li><a id="Home" href="index.html">Home</a></li>
                <!-- Visa drapdown-->
                <li class="dropdown">
                  <a href="#" class="dropdown-toggle" data-toggle="dropdown"> My Menu <span class="caret"></span></a>

                  <ul class="dropdown-menu pull-left" role="menu">
                    <li><a href="#">Menu Item 01</a></li>
                      <li><a href="#">Menu Item 01</a></li>
                      <li><a href="#">Menu Item 02</a></li>
                      <li><a href="#">Menu Item 03</a></li>
                      <li><a href="#">Menu Item 04</a></li>
                      <li><a href="#"></a></li>

                    </ul>

                  </li>

            </div><!--/.nav-collapse -->
          </div><!--/.container-fluid -->
        </nav>

解决方案

Adding this style element to the dropdown <ul> will align the dropdown to the left side of the menu item:

left:0;

See this Bootply which targets the .dropdown-menu.pull-left and adds a left:0;. This should solve your problem.

---

Update

I see that Bootstrap has deprecated pull-right and pull-left as of Bootstrap 3.1.0. Use dropdown-menu-left class to use built-in Bootstrap css to align the dropdown on the left edge so you don't need extra CSS. See this updated Bootply

这篇关于如何左对齐引导3下拉菜单？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！