Bootstrap 5.1 切换打开后不关闭（最新版本）答案

【问题标题】：Bootstrap 5.1 toggle not closing after opening(latest version)Bootstrap 5.1 切换打开后不关闭（最新版本）
【发布时间】：2022-02-08 14:34:56
【问题描述】：

我正在学习 JS 并制作了一个可折叠的导航栏。我得到了菜单单击按钮时打开，但不会关闭。我已经在这个网站上搜索过答案，但我发现的任何东西都是指 Bootstrap。这只是纯JS。我也有花了几个小时检查我的代码，试图发现语法错误或任何可能的错误出错了。任何帮助将不胜感激！我正在开发 5.1 的最新版本的引导程序并面临这个问题。

我无法解决这个问题。导航栏切换器在打开后未关闭。这是我的代码：

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

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

  <!-- Bootstrap CSS -->
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
  <link rel="stylesheet" href="styles.css">

  <title>Hello, world!</title>
</head>

<body>
  <nav class="navbar navbar-expand-lg navbar-dark bg-dark  ">
    <a class="navbar-brand" href="#">tindog</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
      <ul class="navbar-nav ms-auto ">
        <li class="nav-item">
          <a class="nav-link" href="#">Contact</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Pricing</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Download</a>
        </li>
      </ul>
    </div>
  </nav>

  <!-- Optional JavaScript; choose one of the two! -->

  <!-- Option 1: Bootstrap Bundle with Popper -->

  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>

  <!-- Option 2: Separate Popper and Bootstrap JS -->
  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.10.2/dist/umd/popper.min.js" integrity="sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.min.js" integrity="sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13" crossorigin="anonymous"></script>

</body>

</html>

帮助我解决这个问题。我已经包含了 js bootstrap。

【问题讨论】：

标签： bootstrap-5

【解决方案1】：

解决方案 -

注释掉单独的 Popper 和 Bootstrap JS
根据引导站点修改导航条代码结构

参考网址 -

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

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

    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
    <link rel="stylesheet" href="styles.css">

    <title>Hello, world!</title>
</head>

<body>
    <nav class="navbar navbar-dark bg-dark">
        <div class="container-fluid">
            <a class="navbar-brand" href="#">tindog</a>
            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo01"
                aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
        </div>
    </nav>
    <div class="collapse" id="navbarTogglerDemo01">
        <ul class="bg-dark p-4">
            <li class="nav-item">
                <a class="nav-link" href="#">Contact</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Pricing</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#">Download</a>
            </li>
        </ul>
    </div>

    <!-- Optional JavaScript; choose one of the two! -->

    <!-- Option 1: Bootstrap Bundle with Popper -->

    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
        integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
        crossorigin="anonymous"></script>

    <!-- Option 2: Separate Popper and Bootstrap JS -->
    <!-- <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.10.2/dist/umd/popper.min.js"
        integrity="sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB"
        crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.min.js"
        integrity="sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13"
        crossorigin="anonymous"></script> -->

</body>
</html>

【讨论】：

我同意@Pinaki 的观点，即您应该使用 JS Bundle 而不是分别使用 Bootstrap JS 和 Popper JS。因此，您可以从上面的代码中删除选项 2。
非常感谢，现在可以使用了。