jQuery 复杂的隐藏显示子菜单

Question

我想不出一个合适的方法来完成所有需要的逻辑。出于布局目的，子菜单需要位于其菜单链接根目录之外。需要的逻辑是：

何时应该打开子菜单：

1. 在触摸设备中，当用户点击链接
2. 在指针中决定用户何时将鼠标悬停在链接上
3. 打开菜单时，链接和子菜单必须获得“活动”类。

何时关闭子菜单：

1. 单击“关闭”按钮时（位于子菜单内）
2. 当另一个菜单打开时，第一个菜单应该关闭
3. 在触摸设备中，当您点击子菜单外的任意位置时
4. 在指针设备中，当鼠标离开子菜单区域时

---

已编辑：这是 100% 工作的最终代码 在@SilverSurfer awnser 和一些调整之后

---

$(".sub-menu").hide()

$("a.close-bt").click(function(){
    $(this).closest(".sub-menu").hide()
    $(this).closest(".sub-menu").removeClass("active")
    $(this).closest(document).find("a.menu-item").removeClass("active")
});

$(document).on('click mouseover', "ul.menu > a", function () {
    $("ul.menu > a").removeClass("active")
    $(".sub-menu").hide()
    var target = "."+$(this).attr("id")
    $(target).addClass("active")
    $(this).addClass("active")
    $(target).show()
});
$(".sub-menu").mouseleave(function() {
    $(this).hide()
    $(this).removeClass("active")
    $(this).closest(document).find("a.menu-item").removeClass("active")
});

// FUNCTIONAL STYLES

.menu {
	z-index: 2;
}
.menu a {
}
.sub-menu {
	//visibility: hidden;
	//visibility: show;
}
.close-bt {
	
}


// VISUAL STYLES, PLZ IGNORE
.menu {
}
.menu a {
	margin-right: 30px;
	background: green;
	display: inline-block;
	padding: 20px;
	color: white;
}
.menu a.active {
	background: red;
}
.sub-menu {
	width: 100px;
	height: 100px;
	background: lightblue;
	border: 2px solid black;
	z-index: 1;
	position: relative;
}
.sub-menu.active {
	visibility: show;
	background: blue;
}
.close-bt {
	background: red;
	color: white;
	padding: 10px;
	position: absolute;
	right: 10px;
	bottom: 10px;
}
ul { margin: 0; left: 0; padding: 0; }


.container  { position: absolute; top: 50px; left: 0; } 
.item1 { position: absolute; top: 10px; left: 0; }
.item2 { position: absolute; top: 10px; left: 110px; }
.item3 { position: absolute; top: 10px; left: 220px; }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<ul class="menu">
	<a class="menu-item" id="item1" href="javascript:void(0);">Link 1</a>
	<a class="menu-item" id="item2" href="javascript:void(0);">Link 2</a>
	<a class="menu-item" id="item3" href="javascript:void(0);">Link 3</a>
</ul>


<div class="container">
	<div class="sub-menu item1">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 1
	</div>
	<div class="sub-menu item2">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 2
	</div>
	<div class="sub-menu item3">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 2
	</div>
</div>

Answer 1

这就是你要找的东西吗？

$(".sub-menu").hide()

$("a.close-bt").click(function(){
    $(this).closest(".sub-menu").hide()
    $(this).closest(".sub-menu").removeClass("active")
    $(this).closest(document).find("ul").removeClass("active")
});

$(document).on('click mouseover', "ul > a", function () {
    $(".sub-menu").hide()
    var target = "."+$(this).attr("id")
    $(target).addClass("active")
    $(this).closest("ul.menu").addClass("active")
    $(target).show()
});

// FUNCTIONAL STYLES

.menu {
	z-index: 2;
}
.menu a {
}
.sub-menu {
	//visibility: hidden;
	//visibility: show;
}
.close-bt {
	
}


// VISUAL STYLES, PLZ IGNORE
.menu {
}
.menu a {
	margin-right: 30px;
	background: green;
	display: inline-block;
	padding: 20px;
	color: white;
}
.menu a.active {
	background: red;
}
.sub-menu {
	width: 100px;
	height: 100px;
	background: lightblue;
	border: 2px solid black;
	z-index: 1;
	position: relative;
}
.sub-menu.active {
	visibility: show;
	background: blue;
}
.close-bt {
	background: red;
	color: white;
	padding: 10px;
	position: absolute;
	right: 10px;
	bottom: 10px;
}
ul { margin: 0; left: 0; padding: 0; }


.container  { position: absolute; top: 50px; left: 0; } 
.item1 { position: absolute; top: 10px; left: 0; }
.item2 { position: absolute; top: 10px; left: 110px; }
.item3 { position: absolute; top: 10px; left: 220px; }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<ul class="menu">
	<a id="item1" href="javascript:void(0);">Link 1</a>
	<a id="item2" href="javascript:void(0);">Link 2</a>
	<a id="item3" href="javascript:void(0);">Link 3</a>
</ul>


<div class="container">
	<div class="sub-menu item1">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 1
	</div>
	<div class="sub-menu item2">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 2
	</div>
	<div class="sub-menu item3">
    <a class="close-bt" href="javascript:void(0);">Close</a>
		Sub-menu 2
	</div>
</div>