javascript - Bootstrap 导航栏以一种奇怪的方式刷新

Question

我正在尝试让我的网站响应
当我在电脑上使用这个导航栏时，我从导航栏上点击一个按钮，每次点击它都会刷新，当我从移动设备上点击时，它没有任何问题

<nav class="navbar navbar-inverse bg-primary">
<div class="container-fluid">
    <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="#">main</a>
    </div>
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
            <li><a href="#/">a</a></li>
            <li><a href="#1">b</a></li>
            <li><a href="#2">c</a></li>
        </ul>
    </div>
</div>
</nav>

现在我添加了一个脚本，可以自动折叠手机中的导航栏，但在 PC 浏览器中它的行为很奇怪:

  <script>
    $('.navbar-collapse a').click(function(e) {
        $('.navbar-collapse').collapse('toggle');
    });

</script>

这是一个 example

Answer 1

您可以根据导航栏展开的事实来调节切换调用。

这是因为在您的情况下，导航栏从未在桌面 View 中展开。

所以基本上这会起作用:

   $('.navbar-collapse a').click(function(e) {
      var $nav =  $('.navbar-collapse'); 

      if($nav.hasClass("in")) // if expanded - collapse
        $('.navbar-collapse').collapse('toggle');
    });

笨蛋:https://plnkr.co/edit/f5ythwhkdTOF6lzdCXqK?p=preview

<!--    jquery-->
<script src="https://code.jquery.com/jquery-3.2.1.min.js" integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4=" crossorigin="anonymous"></script>

<!-- Bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-rtl/3.4.0/css/bootstrap-rtl.css">

<!--Header-->
<div>
  <nav class="navbar navbar-inverse bg-primary">
    <div class="container-fluid">
      <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="#">main</a>
      </div>
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
          <li><a href="#/">a</a></li>
          <li><a href="#1">b</a></li>
          <li><a href="#2">c</a></li>
        </ul>
      </div>
    </div>
  </nav>

</div>

<script>
  $('.navbar-collapse a').click(function(e) {
    var $nav = $('.navbar-collapse');
    if ($nav.hasClass("in"))
      $('.navbar-collapse').collapse('toggle');
  });
</script>