Question

所以我已经努力了几个星期，试图了解以下代码的错误之处。就像我想要的那样工作，直到我缩小浏览器，然后无论我单击切换开关多少次，菜单都将保持打开状态。我希望将其作为默认行为关闭并仅在单击切换开关时打开。

我已经完成了数千次，但是这次却行不通！非常感谢任何帮助！

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <title>WEBPAGE</title>
  <!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
  <!-- Font Awesome -->
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <!-- Bootstrap core CSS -->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <!-- Material Design Bootstrap -->
  <link href="css/mdb.min.css" rel="stylesheet">
  <!-- Custom styles -->
  <link href="css/style.css" rel="stylesheet">
  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
  <link rel="icon" href="favicon.ico" type="image/x-icon">
</head>

<body>
    <!--Main Navigation-->
    <header>
      <nav class="navbar fixed-top navbar-expand-lg navbar-dark scrolling-navbar">
        <a class="navbar-brand bg-dark" href="#"><strong>NAME</strong></a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
          aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
          <span class="navbar-toggler-icon"></span>
        </button>
        <div id="navbarSupportedContent" class="navi collapse navbar-collapse d-flex justify-content-between">
            <ul class="navbar-nav navbar-right">
                <li class="nav-item active">
                  <a class="nav-link text-dark" href="#">HOME <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                  <a class="nav-link text-dark active" href="#">OPTION1</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link text-dark" href="#">OPTION2</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link text-dark" href="#">OPTION3</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link text-dark" href="#">OPTION4</a>
                </li>
              <li class="nav-item">
                  <a class="nav-link text-dark" href="#">OPTION5</a>
                </li>
              <li class="nav-item">
                  <a class="nav-link text-dark" href="#">OPTION6</a>
                </li>
        </div>
      </nav>  
    </header>

<!-- SCRIPTS -->
  <!-- JQuery -->
  <script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
  <!-- Bootstrap tooltips -->
  <script type="text/javascript" src="js/popper.min.js"></script>
  <!-- Bootstrap core JavaScript -->
  <script type="text/javascript" src="js/bootstrap.min.js"></script>
  <!-- MDB core JavaScript -->
  <script type="text/javascript" src="js/mdb.min.js"></script>
</body>

Answer 1

这仅仅是因为您要两次导入bootstrap.min.js 都是cdn和本地js。

删除CDN js即可正常工作（并且不要忘记，始终将Jquery放在所有bootsrap js文件的顶部）

还要删除所有重复的css cdn。

Answer 2

仅使用此html代码..........不要检入代码片段..只需复制html cody并检入文件即可。.因为文件路径来自您的文件夹。

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <title>WEBPAGE</title>
  <!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
  <!-- Font Awesome -->
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <!-- Bootstrap core CSS -->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <!-- Material Design Bootstrap -->
  <link href="css/mdb.min.css" rel="stylesheet">
  <!-- Custom styles -->
  <link href="css/style.css" rel="stylesheet">
  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
  <link rel="icon" href="favicon.ico" type="image/x-icon">
</head>

<body>
   <!--Main Navigation-->
      <header>
        
        <nav class="navbar fixed-top navbar-expand-lg navbar-light bg-light">
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
              <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
              <a class="navbar-brand" href="#">Hidden brand</a>
              <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
                  <li class="nav-item active">
                      <a class="nav-link text-dark" href="#">HOME <span class="sr-only">(current)</span></a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link text-dark active" href="#">OPTION1</a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link text-dark" href="#">OPTION2</a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link text-dark" href="#">OPTION3</a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link text-dark" href="#">OPTION4</a>
                    </li>
                  <li class="nav-item">
                      <a class="nav-link text-dark" href="#">OPTION5</a>
                    </li>
                  <li class="nav-item">
                      <a class="nav-link text-dark" href="#">OPTION6</a>
                    </li>
              </ul>
              <form class="form-inline my-2 my-lg-0">
                <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
                <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
              </form>
            </div>
          </nav>

      </header>
<!-- SCRIPTS -->
  <!-- JQuery -->
  <script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
  <!-- Bootstrap tooltips -->
  <script type="text/javascript" src="js/popper.min.js"></script>
  <!-- Bootstrap core JavaScript -->
  <script type="text/javascript" src="js/bootstrap.min.js"></script>
  <!-- MDB core JavaScript -->
  <script type="text/javascript" src="js/mdb.min.js"></script>
</body>

我的Bootstrap Navbar切换未切换

2 个答案: