Question

  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
                <a href="index.html" class="navbar-brand display-4">NintendoWorlds</a>
                <button class="navbar-toggler" data-toggle="collapse" data-target="#menu">
                    <span class="navbar-toggler-icon"></span>
                </button>
                <div class="collapse navbar-collapse" id="menu">
                    <ul class="navbar-nav">
                        <li class="nav-item dropdown">
                                <a href="#" class="nav-link" data-toggle="dropdown">Games</a>
                                <ul class="dropdown-menu" >
                                    <li><a href="#" class="dropdown-item">Latest</a></li>
                                    <li><a href="#" class="dropdown-item">Best Selling</a></li>
                                    <li><a href="#" class="dropdown-item">Our Pick</a></li>
                                </ul>
                        </li>
@media all and (min-width:992px){
    .navbar .nav-item .dropdown-menu{display:none;}
    .navbar .nav-item:hover .dropdown-menu{display:block;}
    .navbar .nav-item .dropdown-menu{margin-top:0;}
}
ul.dropdown-menu a.dropdown-item{
    padding: 14px;
    margin: 8px;
}

当我将鼠标悬停在“ Our Pick”上时，我想显示一个菜单。你们能告诉我怎么做吗？

Answer 1

您可以在我们的选择ul中添加嵌套的li元素，并在我们的选择menu上显示我们的选择的子right。

我们可以使用:hover伪类来做到这一点。当您将鼠标从submenu中移出时，Our Pick将隐藏起来

实时工作演示

@media all and (min-width:992px) {
  .navbar .nav-item .dropdown-menu {
    display: none;
  }
  .navbar .nav-item:hover .dropdown-menu {
    display: block;
  }
  .navbar .nav-item .dropdown-menu {
    margin-top: 0;
  }
}

ul.dropdown-menu a.dropdown-item {
  padding: 14px;
  margin: 8px;
}

.our-pick {
  display: none;
  list-style-type: none;
}

.sub-menu:hover .our-pick {
  display: block;
}

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">

<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<!-- Popper JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
  <a href="index.html" class="navbar-brand display-4">NintendoWorlds</a>
  <button class="navbar-toggler" data-toggle="collapse" data-target="#menu">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="menu">
    <ul class="navbar-nav">
      <li class="nav-item dropdown">
        <a href="#" class="nav-link" data-toggle="dropdown">Games</a>
        <ul class="dropdown-menu">
          <li><a href="#" class="dropdown-item">Latest</a></li>
          <li><a href="#" class="dropdown-item">Best Selling</a></li>
          <li class="sub-menu"><a href="#" class="dropdown-item">Our Pick</a>
            <ul class="our-pick">
              <li><a href="#" class="dropdown-item">Our Pick 1</a></li>
              <li><a href="#" class="dropdown-item">Our Pick 2</a></li>
              <li><a href="#" class="dropdown-item">Our Pick 3</a></li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </div>
</nav>

Answer 2

如果菜单直接位于链接之后，例如：

<ul class="dropdown-menu" >
    <li><a href="#" class="dropdown-item">Latest</a></li>
    <li><a href="#" class="dropdown-item">Best Selling</a></li>
    <li>
        <a href="#" class="dropdown-item">Our Pick</a>
        <ul class = "menu">
         // menu
        </ul>
    </li>
</ul>

您可以在CSS中使用+选择器：

.dropdown-item:hover + .menu { display:block; }

菜单内的悬停菜单

2 个答案: