Question

我一直在为laravel project使用bootstrap 4.3.1，并且一切正常，但是我正在使用的底部导航栏扩展了一次，不想在移动视图中退回。 / p>

单击折叠按钮后，代码将变为折叠状态，然后立即恢复为消耗状态。

这里可能是什么问题？

这是导航栏的代码：

<nav class="navbar fixed-bottom navbar-expand-lg navbar-light">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
        <div class="navbar-nav m-auto">
            <a class="nav-item nav-link active" href="/">Home <span class="sr-only">(current)</span></a>
            <a class="nav-item nav-link" href="/posts">Blog</a>
            <a class="nav-item nav-link" href="/services">Service</a>
            <a class="nav-item nav-link" href="/about">About</a>
        </div>
        <ul class="nav navbar-nav navbar-right">
            <!-- Authentication Links -->
            @guest
            <li class="nav-item">
                <a class="nav-link" href="{{ route('login') }}">{{ __('Login') }}</a>
            </li>
            @if (Route::has('register'))
                <li class="nav-item">
                    <a class="nav-link" href="{{ route('register') }}">{{ __('Register') }}</a>
                </li>
            @endif
        @else
            <li><a href="/posts/create" class="nav-item nav-link">Create Post</a></li>
            <li><a href="/dashboard" class="nav-item nav-link">{{ Auth::user()->name }} <span class="caret"></span></a></li>
            <li>
                <a href="{{ route('logout') }}"
                    onclick="event.preventDefault();
                    document.getElementById('logout-form').submit();" class="nav-item nav-link">
                    {{ __('Logout') }}
                </a>
                <form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;">
                        @csrf
                </form>
            </li>
        @endguest
        </ul>
    </div>
</nav>

以下是浏览器中上述代码的HTML输出：

<nav class="navbar fixed-bottom navbar-expand-lg navbar-light">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
        <div class="navbar-nav m-auto">
            <a class="nav-item nav-link active" href="/">Home <span class="sr-only">(current)</span></a>
            <a class="nav-item nav-link" href="/posts">Blog</a>
            <a class="nav-item nav-link" href="/services">Service</a>
            <a class="nav-item nav-link" href="/about">About</a>
        </div>
        <ul class="nav navbar-nav navbar-right">
            <!-- Authentication Links -->
                        <li class="nav-item">
                <a class="nav-link" href="http://laravel.build/login">Login</a>
            </li>
                            <li class="nav-item">
                    <a class="nav-link" href="http://laravel.build/register">Register</a>
                </li>
                            </ul>
    </div>
</nav>

我的头部标签的内容：

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- CSRF Token -->
    <meta name="csrf-token" content="{{ csrf_token() }}">

    <title>{{ config('app.name', 'Laravel') }}</title>

    <!-- Scripts -->
    <script src="{{ asset('js/app.js') }}" defer></script>

    <!-- Fonts -->
    <link rel="dns-prefetch" href="//fonts.gstatic.com">
    <link href="https://fonts.googleapis.com/css?family=Nunito" rel="stylesheet">

    <!-- Google Material Icons -->
    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">

    <!-- Styles -->
    <link href="{{ asset('css/app.css') }}" rel="stylesheet">
</head>

除了上面的代码，在body标记的末尾附近还有引导相关的脚本：

<!-- Bootstrap JS, Popper.js and jQuery -->
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>

Answer 1

有时，当您两次包含引导程序时，就会发生这种情况。检查引用了bootstrap.js的js文件。或将其全局包含在webpack.mix.js documentation

中

Bootstrap导航栏不会倒退

1 个答案: