切換下一個列表時如何關閉切換

Question

這是一個多子下拉菜單，實際上我正在嘗試一次切換一個菜單（即只有選定的菜單會顯示其他應該關閉的菜單）。

這是我的代碼

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;
}

這在另一個菜單切換后並沒有關閉，並且第三級子菜單對於第一個答案並不靈活。 謝謝，

Answer 1

您需要在發生點擊事件的地方獲得closest ul，然后使用.not()將其從隱藏中排除，然后只需使用next("ul").toggle(); 顯示下拉菜單。

演示代碼：

 $(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>