切换下一个列表时如何关闭切换

Question

这是一个多子下拉菜单，实际上我正在尝试一次切换一个菜单（即只有选定的菜单会显示其他应该关闭的菜单）。

这是我的代码

HTML

<div class="collapse navbar-collapse pull-left" id="navbar-collapse">
    <ul class="nav navbar-nav">
        <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" data-toggle="dropdown">Master<span class="caret"></span></a>
            <ul class="dropdown-menu">
                <li class="dropdown-submenu">
                    <a class="test" tabindex="-1" href="#">MENU-A<span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a tabindex="-1" href="#">A1-CHILD</a></li>
                        <li><a tabindex="-1" href="#">A2-CHILD</a></li>
                    </ul>
                </li>
                <li class="dropdown-submenu">
                    <a class="test" tabindex="-1" href="#">MENU-B<span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a tabindex="-1" href="#">B1-CHILD</a></li>
                        <li><a tabindex="-1" href="#">B2CHILD</a></li>
                    </ul>
                </li>
                <li class="dropdown-submenu">
                    <a class="test" tabindex="-1" href="#">MENU-C <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li class="dropdown-submenu">
                            <a class="test" href="#">C1-CHILD <span class="caret"></span></a>
                            <ul class="dropdown-menu">
                                <li><a href="/supplier/create">C1-A</a></li>
                                <li><a href="/supplier/index">C1-B</a></li>
                            </ul>
                        </li>
                        <li class="dropdown-submenu">
                            <a class="test" href="#">C2-CHILD <span class="caret"></span></a>
                            <ul class="dropdown-menu">
                                <li><a href="/weight-balance-map/create">C2-A</a></li>
                                <li><a href="/weight-balance-map/create">C2-B</a></li>
                            </ul>
                        </li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>
</div>

JS ：

$(document).ready(function{
  $(".dropdown-submenu a.test").on("click", function(e){
    $(this).next("ul").toggle();
    e.stopPropagation();
    e.preventDefault();
  });
});

CSS：

.dropdown-submenu {
  position: relative;
}

.dropdown-submenu .dropdown-menu {
  top: 0;
  left: 100%;
  margin-top: -1px;
}

这在另一个菜单切换后并没有关闭，并且第三级子菜单对于第一个答案并不灵活。 谢谢，

Answer 1

您需要在发生点击事件的地方获得closest ul，然后使用.not()将其从隐藏中排除，然后只需使用next("ul").toggle(); 显示下拉菜单。

演示代码：

 $(document).ready(function() { $(".dropdown-submenu a.test").on("click", function(e) { //get closest `li`-> ul var selector = $(this).closest(".dropdown-submenu").find("ul"); //hid all other li and ul $(".dropdown-submenu ul").not(selector).not(this.closest('ul')).hide() $(this).next("ul").toggle(); //show this a-> next ul e.stopPropagation(); e.preventDefault(); }); });

 .dropdown-submenu { position: relative; }.dropdown-submenu.dropdown-menu { top: 0; left: 100%; margin-top: -1px; display: none; }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div class="collapse navbar-collapse pull-left" id="navbar-collapse"> <ul class="nav navbar-nav"> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" data-toggle="dropdown">Master<span class="caret"></span></a> <ul class="dropdown-menu"> <li class="dropdown-submenu"> <a class="test" tabindex="-1" href="#">MENU-A<span class="caret"></span></a> <ul class="dropdown-menu"> <li><a tabindex="-1" href="#">A1-CHILD</a></li> <li><a tabindex="-1" href="#">A2-CHILD</a></li> </ul> </li> <li class="dropdown-submenu"> <a class="test" tabindex="-1" href="#">MENU-B<span class="caret"></span></a> <ul class="dropdown-menu"> <li><a tabindex="-1" href="#">B1-CHILD</a></li> <li><a tabindex="-1" href="#">B2CHILD</a></li> </ul> </li> <li class="dropdown-submenu"> <a class="test" tabindex="-1" href="#">MENU-C <span class="caret"></span></a> <ul class="dropdown-menu"> <li class="dropdown-submenu"> <a class="test" href="#">C1-CHILD <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="/supplier/create">C1-A</a></li> <li><a href="/supplier/index">C1-B</a></li> </ul> </li> <li class="dropdown-submenu"> <a class="test" href="#">C2-CHILD <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="/weight-balance-map/create">C2-A</a></li> <li><a href="/weight-balance-map/create">C2-B</a></li> </ul> </li> </ul> </li> </ul> </li> </ul> </div>