移动设备上未显示汉堡菜单

Question

我正在使用 bootstrap 3.4.x，但出于某种原因，我的菜单在移动设备上不可见。我可以在浏览器中调整大小，一切都很好，但在设备上看什么都没有。视口设置在 head 标签中，jquery 在 bootstrap 之前加载。我一辈子都找不到问题所在。？？？下面是想要的结果（站点：site in question）

这是手机的样子：

Menu is missing

<!DOCTYPE html>
<html lang="en">  
<head><meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
    
 </head>
<body>
<form runat="server">
    <asp:ScriptManager runat="server">
        <Scripts>
            <%--To learn more about bundling scripts in ScriptManager see https://go.microsoft.com/fwlink/?LinkID=301884 --%>
            <%--Framework Scripts--%>
            <asp:ScriptReference Name="MsAjaxBundle" />
            <asp:ScriptReference Name="jquery" />
            <asp:ScriptReference Name="bootstrap" />
            <asp:ScriptReference Name="WebForms.js" Assembly="System.Web" Path="~/Scripts/WebForms/WebForms.js" />
            <asp:ScriptReference Name="WebUIValidation.js" Assembly="System.Web" Path="~/Scripts/WebForms/WebUIValidation.js" />
            <asp:ScriptReference Name="MenuStandards.js" Assembly="System.Web" Path="~/Scripts/WebForms/MenuStandards.js" />
            <asp:ScriptReference Name="GridView.js" Assembly="System.Web" Path="~/Scripts/WebForms/GridView.js" />
            <asp:ScriptReference Name="DetailsView.js" Assembly="System.Web" Path="~/Scripts/WebForms/DetailsView.js" />
            <asp:ScriptReference Name="TreeView.js" Assembly="System.Web" Path="~/Scripts/WebForms/TreeView.js" />
            <asp:ScriptReference Name="WebParts.js" Assembly="System.Web" Path="~/Scripts/WebForms/WebParts.js" />
            <asp:ScriptReference Name="Focus.js" Assembly="System.Web" Path="~/Scripts/WebForms/Focus.js" />
            <asp:ScriptReference Name="WebFormsBundle" />
            <%--Site Scripts--%>
        </Scripts>
    </asp:ScriptManager>


 <div class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
          <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#ham-menu">
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" runat="server" href="~/">LOGO Here</a>
            </div>
            <div class="navbar-collapse collapse">
                <ul class="nav navbar-nav" id="ham-menu">
                    <li><a runat="server" href="~/">Home</a></li>
                    <li><a runat="server" href="~/Schedule">Schedule</a></li>
                    <li><a runat="server" href="~/Gallery">Gallery</a></li>
                    <li><a runat="server" href="~/About">About</a></li>
                    <li><a runat="server" href="~/Contact">Contact</a></li>
                </ul>
                <asp:LoginView runat="server" ViewStateMode="Disabled">
                    <AnonymousTemplate>
                        <ul class="nav navbar-nav navbar-right">
                            <li><a runat="server" href="~/Account/Register">Register</a></li>
                            <li><a runat="server" href="~/Account/Login">Log in</a></li>
                        </ul>
                    </AnonymousTemplate>
                    <LoggedInTemplate>
                        <ul class="nav navbar-nav navbar-right">
                            <li>
                                <a runat="server" href="~/Account/Manage" title="Manage your account">Hello, <%: Context.User.Identity.GetUserName()  %>!</a>

                            </li>
                            <li>
                                <asp:LoginStatus runat="server" LogoutAction="Redirect" LogoutText="Log off" LogoutPageUrl="~/" OnLoggingOut="Unnamed_LoggingOut" />
                            </li>
                        </ul>
                    </LoggedInTemplate>
                </asp:LoginView>
            </div>
        </div>
    </div>
</body>
</html>

Answer 1

更新：我查看了您提供的相关网站link。似乎一切都很好。现在你只需要移动 id="ham-menu" 属性。

因此，我将您的代码复制并粘贴到 bootstrap 3.4.x 已正确初始化的页面上。原来你的 HTML 代码没有问题，只有一个问题：

将 id 属性从 <ul> 移到外部 <div>。

<div class="navbar-collapse collapse" id="ham-menu"><!--To Here-->
  <ul class="nav navbar-nav"><!--From Here-->
    <li><a runat="server" href="~/">Home</a></li>
    <li><a runat="server" href="~/Schedule">Schedule</a></li>
    <li><a runat="server" href="~/Gallery">Gallery</a></li>
    <li><a runat="server" href="~/About">About</a></li>
    <li><a runat="server" href="~/Contact">Contact</a></li>
  </ul>
</div>

现在，请确保您已正确初始化 bootstrap。要点：

<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>

Answer 2

我发现这篇文章有效。请务必注意底部的 Olorunfemi Ajibulu 评论。正在重新分级，删除目标位置的其他文件！！

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