Question

我将所有CSS和Javascript都放在Django的HTML文件中，如下所示：

 <!doctype html>
    <html lang="en">
      <head>
        <title>Dashboard</title>

    <!-- Required meta tags -->
    <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

<!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

      <script>
          function toggleSidebar(){
              document.getElementsByClassName("sidebar");
          }
      </script>


      <style type="text/css">

          .toggle-btn {
              position:absolute;
              left:180px;
              top:70px
          }

          .toggle-btn span {
              display:block;
              width:30px;
              height:5px;
              background:#000000;
              margin: 5px 0px;
          }

          .sidebar {
              height:100%;
              width:160px;
              position: fixed;
              z-index:1;
              top:0;
              let:0;
              background-color:#111;
              overflow-x: hidden;
              padding-top:70px;                                                  
          }

          .sidebar.active {
              left:0px
          }

          .sidebar a {
              padding:6px 8px 6px 16px;
              text-decoration: none;
              font-size:18px;
              color: #818181;
              display:block;

          }

           .sidebar a:hover {
               color:#ffffff;

          }

      </style>

  </head>


  <body>

<!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <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/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

      <div class="toggle-btn">
          <span></span>
          <span></span>
          <span></span>
      </div>

      <div class="sidebar">


          <a href="/categories">Categories</a>
          <a href="#">Test 1</a>
          <a href="#">Test 2</a>
          <a href="#">Test 3</a>
          <a href="#">Test 4</a>

      </div>


  </body>


<header class="site-header">

  <nav class="navbar navbar-expand-md navbar-dark bg-steel fixed-top">
    <div class="container">


      <a class="navbar-brand mr-4" href="#">Home.com</a>


      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggle" aria-controls="navbarToggle" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarToggle">
        <div class="navbar-nav mr-auto">
        </div>
        <!-- Navbar Right Side -->
        <div class="navbar-nav">
          <a class="nav-item nav-link" href="#">Logout</a>
        </div>
      </div>
    </div>
  </nav>

<section class="hero">
            <div class="hero-inner">
                <h1>Centered Text</h1>

            </div>
        </section>



</header>

</body>    
</html>

我想切换侧边栏，这意味着当某人单击spann标记所指示的汉堡菜单时触发隐藏功能，您可能会通过以下方式得知：

<script>
      function toggleSidebar(){
          document.getElementsByClassName("sidebar");
      }
  </script>

由于我是CSS和Javascript的初学者，因此到目前为止，它尚无法正常工作。如果有人能指出我做错的事情，我将非常感激。

在CodePen

Answer 1

我可以修复切换功能，希望对您有所帮助：

function toggleSidebar() {
  var x = document.getElementsByClassName("sidebar")[0];

  if(x.classList.contains('active')) {
    x.classList.remove('active')
    return;
  }

  x.classList.add('active')
}

如果您检查侧边栏div，您会看到该类已在toogle中添加和删除

Answer 2

您可以使用jQuery's toggle方法。您需要在.toggle-button上创建一个onclick事件，其名称为您的方法的名称（toggleSidebar），这样它就可以在单击时调用它。您还可以在按钮上添加EventListener而不是onclick。

.toggle-btn {
  position: absolute;
  left: 180px;
  top: 70px;
}

.toggle-btn span {
  display: block;
  width: 30px;
  height: 5px;
  background: #000000;
  margin: 5px 0px;
}

.sidebar {
  height: 100%;
  width: 160px;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  padding-top: 70px;
}

.sidebar a {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 18px;
  color: #818181;
  display: block;
}

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
  <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/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

  <script>
    function toggleSidebar() {
      $(".sidebar").toggle();
    }
  </script>
</head>

<body>
  <div class="toggle-btn" onclick="toggleSidebar()">
    <span></span>
    <span></span>
    <span></span>
  </div>
  <div class="sidebar">
    <a href="/categories">Categories</a>
    <a href="#">Test 1</a>
    <a href="#">Test 2</a>
    <a href="#">Test 3</a>
    <a href="#">Test 4</a>
  </div>
</body>

无法使用JS切换侧边栏

2 个答案: