Bootstrap 4 - 如何防止折叠菜单折叠导航中的所有元素

Question

我正在使用 bootstrap 4 导航栏，并且我想防止在单击汉堡菜单时徽标和语言切换与菜单一起移动和折叠。这是我所有的代码。另外，这是我的 codepen 的链接。这可能吗？

https://codepen.io/asizemore/pen/LYEgvOy?editors=1100

CSS

.logo {
  max-width: 130px;
}

.btn {
  font-family: 'Muli', sans-serif;
  font-weight: 900;
}

.btn {
  background: rgb(142, 63, 41);
  color: rgb(202, 171, 159);
}

.active {
  background: rgb(166, 73, 47);
  color: white;
}

HTML

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous">

<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/4.1.1/js/bootstrap.min.js" integrity="sha384-smHYKdLADwkXOn1EmN1qk/HfnUcbVRZyYmZ4qpPea6sjB/pTJ0euyQp0Mk8ck+5T" crossorigin="anonymous"></script>

!--   NAV BAR -->
<nav class="navbar navbar-light fixed-top navbar-expand-lg bg-white">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <a class="navbar-brand mt-lg-0" href="#"><img src="https://via.placeholder.com/200x50" class="logo img-fluid"></a>

  <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
    <ul class="navbar-nav mx-auto mt-2 mt-lg-0">
      <li class="nav-item">
        <a class="nav-link" href="#">PURPOSE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">FAMILY</a>
      </li>
       <li class="nav-item">
        <a class="nav-link" href="#">AGRICULTURE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">ART</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">CONTACT</a>
      </li>

    </ul>

  </div>

<!--   LANGUAGE SWITCH -->

<div class="btn-group btn-toggle lang mr-1"> 
  <input type="button" name="lang" class="btn" value="ENG">

  <input type="button" name="lang" class="btn active" value="SPA">
</div>
</nav>

Answer 1

将您的语言切换放在.navbar-item 中，紧跟在.navbar-brand 之后，并给它一个order: 1（它比0 的默认值大 - 所以它将显示为其父项的最后一项) 在您的 .navbar 未折叠的时间间隔内。由于您使用的是.navbar-expand-lg，因此它将是@media (min-width: 992px)，但如果您使用.navbar-expand-md，它将是min-width: 768px - 或576px 用于-sm。更多关于responsive breakpoints here。

当导航折叠时，您不需要更改顺序，因此语言切换器显示在菜单之前（这就是我们首先将其放在徽标之后的原因）。看到它工作：

.logo {
  max-width: 130px;
}

.btn {
  font-family: 'Muli', sans-serif;
  font-weight: 900;
}

.btn {
  background: rgb(142, 63, 41);
  color: rgb(202, 171, 159);
}

.active {
  background: rgb(166, 73, 47);
  color: white;
}

@media(min-width: 992px) {
  .language-switch {
    order: 1;
  }
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">

<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>

<nav class="navbar navbar-light fixed-top navbar-expand-lg bg-white">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <a class="navbar-brand mt-lg-0" href="#"><img src="https://via.placeholder.com/200x50" class="logo img-fluid"></a>
  <div class="nav-item language-switch">
    <div class="btn-group btn-toggle lang mr-1">
      <input type="button" name="lang" class="btn" value="ENG">
      <input type="button" name="lang" class="btn active" value="SPA">
    </div>
  </div>
  <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
    <ul class="navbar-nav mx-auto mt-2 mt-lg-0">
      <li class="nav-item">
        <a class="nav-link" href="#">PURPOSE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">FAMILY</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">AGRICULTURE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">ART</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">CONTACT</a>
      </li>
    </ul>
  </div>
</nav>

哦，当这三者（徽标、语言切换器和切换器）实际上不适合一行时（比 ~450px 窄的设备），您需要想出一个解决方案。但这基本上是您要求的问题。

注意：如果您希望在导航栏折叠时首先显示徽标，您可以简单地将其放在切换器之前并给切换器 ml-auto mr-3 或 ml-3 mr-auto 以使其粘在右侧或左侧（将其居中会有点奇怪，恕我直言）。示例：

.logo {
  max-width: 130px;
}

.btn {
  font-family: 'Muli', sans-serif;
  font-weight: 900;
}

.btn {
  background: rgb(142, 63, 41);
  color: rgb(202, 171, 159);
}

.active {
  background: rgb(166, 73, 47);
  color: white;
}

@media(min-width: 992px) {
  .language-switch {
    order: 1;
  }
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">

<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>

!-- NAV BAR -->
<nav class="navbar navbar-light fixed-top navbar-expand-lg bg-white">
  <a class="navbar-brand mt-lg-0" href="#"><img src="https://via.placeholder.com/200x50" class="logo img-fluid"></a>
  <button class="navbar-toggler mr-auto" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="nav-item language-switch">
    <div class="btn-group btn-toggle lang mr-1">
      <input type="button" name="lang" class="btn" value="ENG">
      <input type="button" name="lang" class="btn active" value="SPA">
    </div>
  </div>
  <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
    <ul class="navbar-nav mx-auto mt-2 mt-lg-0">
      <li class="nav-item">
        <a class="nav-link" href="#">PURPOSE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">FAMILY</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">AGRICULTURE</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">ART</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">CONTACT</a>
      </li>
    </ul>
  </div>
</nav>

在适当的响应时间间隔（即：在您的情况下，低于991px）在徽标上使用order: -1（无需使用切换器切换其在DOM中的位置）可以实现相同的结果。