javascript - Bootstrap 汉堡包在切换后不显示列表元素

Question

我正在尝试将 Bootstrap 的汉堡菜单合并到页面上，但似乎无法在切换后显示列表元素。

菜单在桌面上加载良好并且确实隐藏了链接，显示了汉堡包。但是，在点击汉堡包图标时，没有任何反应？

示例:

ul {
  list-style-type: none;
}

li {
  padding: 0px 30px;
}

<!-- BOOTSTRAP -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>


<div class="navbar navbar_container">
  <div class="navbar_container-wrapper">

    <nav class="navbar navbar-inverse navbar-static-top" role="navigation">

      <div class="navbar_wrapper-list container">

        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#hamburger">
            <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="hamburger">

          <ul class="navbar_wrapper-ul navbar-nav mr-auto">
            <li id="list-item-1" class="navbar_wrapper-li active nav-item"><a class="active" href="#">Home</a></li>
            <li id="list-item-2" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Blog</a></li>
            <li id="list-item-3" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Portfolio</a></li>
            <li id="list-item-4" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Contact</a></li>
          </ul>

        </div>
      </div>
      <!-- .navbar_wrapper-list end -->
    </nav>
  </div>
  <!-- .navbar_container-wrapper end -->
</div>
<!-- .navbar-container end-->

这个CodePen采用了我的方法.

Answer 1

Actually you need to add "jquery.min.js" before "bootstrap.min.js". Because "bootstrap.min.js" depends on "jquery.min.js"

ul {
  list-style-type: none;
}

li {
  padding: 0px 30px;
}

<!-- BOOTSTRAP -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">



<div class="navbar navbar_container">
  <div class="navbar_container-wrapper">

    <nav class="navbar navbar-inverse navbar-static-top" role="navigation">

      <div class="navbar_wrapper-list container">

        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#hamburger">
            <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="hamburger">

          <ul class="navbar_wrapper-ul navbar-nav mr-auto">
            <li id="list-item-1" class="navbar_wrapper-li active nav-item"><a class="active" href="#">Home</a></li>
            <li id="list-item-2" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Blog</a></li>
            <li id="list-item-3" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Portfolio</a></li>
            <li id="list-item-4" class="navbar_wrapper-li nav-item"><a class="nav-link" href="#">Contact</a></li>
          </ul>

        </div>
      </div>
      <!-- .navbar_wrapper-list end -->
    </nav>
  </div>
  <!-- .navbar_container-wrapper end -->
</div>
<!-- .navbar-container end-->