导航栏切换器在 Bootstrap 5 中不起作用答案

【问题标题】：Navbar Toggler not Working in Bootstrap 5导航栏切换器在 Bootstrap 5 中不起作用
【发布时间】：2021-09-08 21:57:10
【问题描述】：

我正在使用 Bootstrap 5 设计一个响应式页面，但我首先遇到了导航栏的问题。切换按钮根本不起作用，点击时不显示任何项目。

我已经搜索了官方文档的解决方案，但没有帮助。

    <!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">

    <title>Document</title>
</head>

<body>
    <div class="container bg-dark">
        <nav class="navbar navbar-expand-sm">
            <a href="#" class="navbar-brand">Brand</a>
            <button
                class="navbar-toggler"
                type = "button"
                data-bs-toggle="collapse"
                data-bs-target="#menuItems"
                aria-controls="menuItems"
                aria-expanded="false"
                aria-label="Toggle Navigation"
            >
                <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse">
                <ul class="nav navbar-nav navbar-right">
                    <li class="nav-item">
                        <a href="#" class="nav-link">About</a>
                    </li>
                    <li class="nav-item">
                        <a href="#" class="nav-link">Pricing</a>
                    </li>
                    <li class="nav-item">
                        <a href="#" class="nav-link">Contact</a>
                    </li>
                </ul>
            </div>
        </nav>
    </div>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>

</body>

</html>

【问题讨论】：

导航栏上没有id="menuItems"

标签： css twitter-bootstrap navbar bootstrap-5

【解决方案1】：

您错过了使用 id menuItems 也必须使用 navbar-dark 和 bg-dark

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
    <title>Document</title>
</head>

<body>
    <div class="container bg-dark">
        <nav class="navbar navbar-dark navbar-expand-sm">
            <a href="#" class="navbar-brand">Brand</a>
            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#menuItems" aria-controls="menuItems" aria-expanded="false" aria-label="Toggle Navigation">
            <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="menuItems">
                <ul class="navbar-nav">
                    <li class="nav-item">
                        <a href="#" class="nav-link">About</a>
                    </li>
                    <li class="nav-item">
                        <a href="#" class="nav-link">Pricing</a>
                    </li>
                    <li class="nav-item">
                        <a href="#" class="nav-link">Contact</a>
                    </li>
                </ul>
            </div>
        </nav>
    </div>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>

</body>

</html>

【讨论】：

非常感谢，这是我的错。你能帮我检查一下为什么我的代码中没有显示切换器图标吗？但它适用于您的代码。