Bootstrap 4下拉菜单在Laravel-Vue spa中不起作用_Laravel_Vue.js_Bootstrap 4_Popper.js

Bootstrap 4下拉菜单在Laravel-Vue spa中不起作用

laravel vue.js bootstrap-4

Bootstrap 4下拉菜单在Laravel-Vue spa中不起作用,laravel,vue.js,bootstrap-4,popper.js,Laravel,Vue.js,Bootstrap 4,Popper.js,Spa.blade.php文件 <!doctype html> <html lang="{{ str_replace('_', '-', app()->getLocale()) }}"> <head> <title>SPA</title> <link href="https://fonts.googleapis.com/css?family=Lato:300,300i,400,400i,700,700i%7

Spa.blade.php文件

<!doctype html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
    <title>SPA</title>

    <link href="https://fonts.googleapis.com/css?family=Lato:300,300i,400,400i,700,700i%7COpen+Sans:300,300i,400,400i,600,600i,700,700i" rel="stylesheet">

    <!-- Bootstrap 4.4 -->
    <link rel="stylesheet" href="{{ asset('css/app.css') }}">

    <!-- Custom stylesheet -->
    <link rel="stylesheet" href="{{ asset('frontend/style.css') }}">

    <!-- include the site responsive stylesheet -->
    <link rel="stylesheet" href="{{ asset('frontend/css/responsive.css') }}">

</head>
<body>
    <div id="app">
        <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            Dropdown button
        </button>
        <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
            <a class="dropdown-item" href="#">Action</a>
            <a class="dropdown-item" href="#">Another action</a>
            <a class="dropdown-item" href="#">Something else here</a>
        </div>
        </div>
    </div>

<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<script src="{{ asset('js/app.js') }}"></script>
</body>
</html>

有人能建议如何解决这个问题吗？

请仔细研究一下。它正在工作。请检查您正在使用的所有CDN或缺少某些内容。


温泉
下拉按钮

我没有注意到bootstrap.js默认情况下会加载popper和jquery，因此无需再次导入这些CDN链接

/**
 * We'll load jQuery and the Bootstrap jQuery plugin which provides support
 * for JavaScript based Bootstrap features such as modals and tabs. This
 * code may be modified to fit the specific needs of your application.
 */

try {
    window.Popper = require('popper.js').default;
    window.$ = window.jQuery = require('jquery');

    require('bootstrap');
} catch (e) {}

app.js就足够了，它可以加载所有必要的依赖项

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

您是否缺少css表？如果我们删除app.js（Vue实例），它可以工作，但问题是，导入Vue实例时它不工作。

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