bootstrap 导航栏下拉菜单

Question

我正在为我的网站制作一个导航栏，但它似乎不起作用。当我点击我制作的下拉菜单的产品选项卡时，它就像死机一样工作 link 并带我到 index.php# 。请帮忙。我附上了它的标记：

<nav class="navbar navbar-default" >
    <div class="container-fluid">

        <ul class="nav navbar-nav">
            <li class="active"><a href="index.php" >HOME</a></li>
            <li><a href="#">CONTACT US</a></li>


            <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">PRODUCTS <span class="caret"></span></a>

                <ul class="dropdown-menu">
                        <li><a href="boys.php">BOYS</a></li>
                        <li><a href="girls.php">GIRLS</a></li>
                </ul>

            </li>
        </ul>

    </div>    
</nav>

Answer 1

您是否添加了来自 bootstrap

的链接

and add jquery and script at bottom wid jquery above javascript
<!-- Latest compiled and minified CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

    <!-- Optional theme -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">




<!-- Bootstrap core JavaScript
    ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="../../dist/js/bootstrap.min.js"></script>
    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
    <script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>

    <!-- Latest compiled and minified JavaScript -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

Answer 2

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
<meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Latest compiled and minified CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

    <!-- Optional theme -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">


<nav class="navbar navbar-default" >
        <div class="container-fluid">
           <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
            <ul class="nav navbar-nav">
                <li class="active"><a href="index.php" >HOME</a></li>
                <li><a href="#">CONTACT US</a></li>


                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">PRODUCTS <span class="caret"></span></a>

                    <ul class="dropdown-menu">
                            <li><a href="boys.php">BOYS</a></li>
                            <li><a href="girls.php">GIRLS</a></li>
                    </ul>

                </li>
            </ul>
            </div>
        </div>    
    </nav>



<!-- Bootstrap core JavaScript
    ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="../../dist/js/bootstrap.min.js"></script>
    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
    <script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>

    <!-- Latest compiled and minified JavaScript -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>

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