Question

我正在制作一个ASP.NET网页，其中包含使用引导程序4的导航栏。当屏幕较小时，出现切换按钮，但是单击时什么也没发生，看起来它试图显示菜单选项，但是什么也没发生。导航器位于form标记内，如果我将导航栏放在form标记外，一切正常。

有人可以告诉我这里发生了什么吗，我现在不知道了，谢谢

<head runat="server">
    <title>Inicio</title>
     <!-- Required meta tags -->
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
    <script src="Scripts/jquery-3.0.0.min.js"></script>
     <script src="Scripts/umd/popper.min.js"></script>
    <script src="Scripts/bootstrap.min.js"></script> 
    <link href="Content/bootstrap.min.css" rel="stylesheet" />
    <link href="css/Custom.css" rel="stylesheet" />
</head>
<body>
<form id="form1" runat="server">
        <div>
    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
        <a href="#" class="navbar-brand">Title</a>
        <button class="navbar-toggler" data-toggle="collapse" data-target="#navbarMenu">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarMenu">
            <ul class="navbar-nav">
                <li class="nav-item"><a href="#" class="nav-link">Home</a></li>
                <li class="nav-item"><a href="#" class="nav-link">Contact</a></li>
                <li class="nav-item float-right"><a href="#" class="nav-link">Register</a></li>
                <li class="nav-item"><a href="#" class="nav-link">LogIn</a></li>
            </ul>
        </div>
    </nav> 

        </div>
    </form>
</body>

Answer 1

我认为您缺少在顶部正确链接JavaScript库的功能。请检查一下。

fact(3) = if (3 == 1) 1 else 3 * fact(3 - 1) // replace n in the block.
fact(3) = 3 * fact(2) // reduce the if and the subtraction.
fact(3) = 3 * (if (2 == 1) 1 else 2 * fact(2 - 1)) // expand the fact definition.
fact(3) = 3 * (2 * fact(1)) // reduce the if and the subtraction.
fact(3) = 3 * (2 * (if (1 == 1) 1 else 1 * fact(1 - 1))) // expand the fact definition.
fact(3) = 3 * (2 * (1)) // reduce the if.
fact(3) = 6 // reduce the multiplications.

实时链接： https://codepen.io/tayyabrana101/pen/VwwPmLO

Navbar无法在asp.NET网络表单中崩溃

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