Bootstrap：选择下拉项目时导航链接不会隐藏

Question

以下是我想要实现的 - 当导航栏中的下拉项目被选中时，完成以下 2 个操作中的 BOTH：

• 转到具有目标 id 的 div
• 将导航栏卷起至初始状态（将其隐藏回完全卷起的状态）

事实证明，我只能做一个或另一个，但不能同时做。有人可以帮助提供有关我如何实现这两点的指导吗？我相信第一个下拉项目锚应该这样做，但是由于某种原因，它在滚动导航栏后不会转到 targetId。仅当我删除第二个锚点显示的 data-toggle="collapse" 和 data-target=".navbar-collapse.show" 时，锚点才会将我带到目标，但导航栏不会卷起。

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

<nav class="navbar navbar-dark bg-dark fixed-top">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

  <div class="collapse navbar-collapse" id="navbarsExampleDefault">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Menu</a>
        <div class="dropdown-menu shadow rounded" aria-labelledby="dropdown01">
          <a class="dropdown-item" href="#targetId" data-toggle="collapse" data-target=".navbar-collapse.show">nav-link does get hidden, but it doesn't hit the target</a>
          <a class="dropdown-item" href="#targetId">Hits the target, but the nav-link does not get hidden</a>
        </div>
      </li>
    </ul>
  </div>
</nav>
<!-- navbar ends here -->
<div id="targetId">Content</div>

<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>

非常感谢您的帮助，非常感谢！

Answer 1

您可以为此使用Javascript。

document.querySelectorAll('.custom_collapse').forEach(cur => {
  cur.addEventListener('click', () => {
    document.querySelector('.navbar_collapse').classList.remove('show');
  });
});

#targetId {
    /* JUST FOR SEE TARGET */
    margin-top: 120vh;
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

<nav class="navbar navbar-dark bg-dark fixed-top">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

  <div class="collapse navbar-collapse navbar_collapse" id="navbarsExampleDefault">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Menu</a>
        <div class="dropdown-menu shadow rounded" aria-labelledby="dropdown01">
          <a class="dropdown-item custom_collapse" href="#targetId">nav-link does get hidden, but it doesn't hit the target</a>
          <a class="dropdown-item custom_collapse" href="#targetId">Hits the target, but the nav-link does not get hidden</a>
        </div>
      </li>
    </ul>
  </div>
</nav>
<!-- navbar ends here -->
<div id="targetId">Content</div>

<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>