Bootstrap 4.0 - 折叠成一个切换的两个导航栏 [英] Bootstrap 4.0 - Two NavBars that collapse into one toggle

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问题描述

想知道是否可以在桌面上的不同行上显示两个导航栏，但在平板电脑和移动设备上将两个导航栏折叠成一个切换器.

本质上，我希望顶部导航栏包含品牌，然后是四五个菜单项，而第二个导航栏不包含品牌，而是仅包含四五个导航元素.我希望这些导航栏在桌面上显示在自己的行上，但是当视口缩小到平板电脑或移动设备时，这两个导航栏的内容都属于同一个移动导航栏切换器.这可能吗?我看到了很多 Bootstrap 3 的解决方案，但 Bootstrap 4 没有.

<span class="navbar-toggler-icon"></span><div class="collapse navbar-collapse" id="navbarNavAltMarkup"><div class="navbar-nav"><a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a><a class="nav-item nav-link" href="#">功能</a><a class="nav-item nav-link" href="#">定价</a><a class="nav-item nav-link disabled" href="#">Disabled</a>

</nav><nav class="navbar navbar-expand-lg navbar-light bg-light"><a class="navbar-brand" href="#">Navbar</a><button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle导航"><span class="navbar-toggler-icon"></span><div class="collapse navbar-collapse" id="navbarNavAltMarkup"><div class="navbar-nav"><a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a><a class="nav-item nav-link" href="#">功能</a><a class="nav-item nav-link" href="#">定价</a><a class="nav-item nav-link disabled" href="#">Disabled</a>

</nav><script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5Kkn"cross/脚本><script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicFoGinp"crossIp"<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkEk>anJVugt;anJVugt;n</脚本>

解决方案

例如:

序列化目标元素 ID

Wondering if it's possible to have two navigation bars displaying on separate rows on desktop, but have the two navbars collapse into one toggler on tablet and mobile.

Essentially, I want the top navbar to contain the brand, and then four or five menu items, while the second navbar would not contain a brand but instead just four or five more navigation elements. I would like these navigation bars to display on their own rows on desktop, but when the viewport shrinks to tablet or mobile, have the contents of both of these navbars fall under the same mobile navbar toggler. Is this possible? I see a bunch of solutions for Bootstrap 3, but none for Bootstrap 4. 

<head><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous"></head>
<body>

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
    <div class="navbar-nav">
      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
      <a class="nav-item nav-link" href="#">Features</a>
      <a class="nav-item nav-link" href="#">Pricing</a>
      <a class="nav-item nav-link disabled" href="#">Disabled</a>
    </div>
  </div>
</nav>

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
    <div class="navbar-nav">
      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
      <a class="nav-item nav-link" href="#">Features</a>
      <a class="nav-item nav-link" href="#">Pricing</a>
      <a class="nav-item nav-link disabled" href="#">Disabled</a>
    </div>
  </div>
</nav>

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
</body>

解决方案

for example :

<button type="button" class="btn btn-primary dropdown-toggle btn-sm" 
  data-toggle="collapse" data-target="#demo,#demo1,#demo2">Hide them all</button>

you can serialize target elements ids with (,)

这篇关于Bootstrap 4.0 - 折叠成一个切换的两个导航栏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！

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