Question

我想要一个Bootstrap 3导航栏，它有两行导航元素，并且navbar-brand跨越两行。在SM +屏幕尺寸上，两行都是可见的。在XS屏幕尺寸上，第二行折叠并显示要打开的图标栏。

SM +

+-------------------------------------------------------------------------------+
|               |                                             Nav-A-1  Nav-A-2  |
|  SITE LOGO    |---------------------------------------------------------------+
|               |  Nav-B-1  Nav-B-2 Nav-B-3 Nav-B-4                 Form-Right  |
+-------------------------------------------------------------------------------+

XS

+-------------------------------------------------------------------------------+
|               |                                             Nav-A-1  Nav-A-2  |
|  SITE LOGO    |---------------------------------------------------------------+
|               |  Nav-Collapsed                                     Hamburger  |
+-------------------------------------------------------------------------------+

如何使用导航栏完成此操作？

Answer 1

您基本上可以使用两个导航栏，然后使用position: absolute作为图像。您可能会使用网格，但您的折叠菜单最不可能在移动设备上实现全宽。

工作示例：

＆＃13;

.navbar-inverse.nav-upper {
  height: 50px;
}
.navbar-inverse.nav-upper ul {
  float: right;
  display: table;
}
.navbar-inverse.nav-upper .navbar-upper > li {
  display: table-cell;
  font-size: 14px;
}
.navbar-inverse.nav-upper .navbar-upper > li > a {
  color: #777;
}
@media (min-width: 768px) {
  .navbar.navbar-lower .navbar-nav {
    margin-left: 100px;
  }
}
.navbar-logo {
  background-image: url('https://lh3.googleusercontent.com/-tw5LsU4Fg28/Umo6BBcoCnI/AAAAAAAAmjE/1iqULsem06E/w896-h896/heisencat.png');
  width: 90px;
  height: 90px;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  position: absolute;
  top: 5px;
  left: 15px;
  z-index: 1051;
}

＆＃13;

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<a class="navbar-logo" href="#"></a>

<nav class="navbar-inverse nav-upper">
  <div class="container-fluid">
    <ul class="nav navbar-upper">
      <li><a href="#">NAV-A-1</a>
      </li>
      <li><a href="#">NAV-A-2</a>
      </li>
    </ul>
  </div>
</nav>

<nav class="navbar navbar-inverse navbar-static-top navbar-lower">
  <div class="container-fluid">

    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false"> <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
    </div>

    <div class="collapse navbar-collapse" id="navbar">
      <ul class="nav navbar-nav">
        <li><a href="#">NAV-B-1</a>
        </li>
        <li><a href="#">NAV-B-2</a>
        </li>
        <li><a href="#">NAV-B-3</a>
        </li>
        <li><a href="#">NAV-B-4</a>
        </li>
      </ul>
      <form class="navbar-form navbar-right" role="search">
        <div class="form-group">
          <div class="input-group">
            <input type="text" class="form-control" placeholder="Search">
            <span class="input-group-btn">
              <button type="submit" class="btn btn-default">Submit</button>
            </span>
          </div>
        </div>
      </form>
    </div>
  </div>
</nav>

＆＃13;

Answer 2

试试这个。在SM +屏幕尺寸上，两行都是可见的。在XS屏幕尺寸上，第二行折叠并显示右侧打开的图标栏。

＆＃13;

.navbar-default.nav-top ul {
  display: inline-block;
  float: right;
}
.navbar-default ul.navbar-top li {
  float: left;
  font-size: 11px;
}
.navbar-brand {
  margin: -40px;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar-default nav-top">
  <div class="container-fluid">
    <ul class="nav navbar-top" >
      <li><a href="#">Nav-A-1</a>

      </li>
      <li><a href="#">Nav-A-2</a>

      </li>
      <li><a href="#">.....</a>

      </li>
    </ul>
  </div>
</nav>
<nav class="navbar navbar-default">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> <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="#">
        <img src="http://placehold.it/100x50/f00/f00">
      </a>

    </div>
    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav " style="margin-left:150px;">
        <li class="active"><a href="#">Nav-B-1<span class="sr-only">(current)</span></a>

        </li>
        <li><a href="#">Nav-B-2</a>

        </li>
        <li><a href="#">Nav-B-3</a>

        </li>
      </ul>
    </div>
  </div>
</nav>

＆＃13;

Answer 3

请查看下面的代码段

strtoupper()

两行

3 个答案: