使用 jQuery 单击后台容器时隐藏项目
Hide item when background container is clicked using jQuery
我正在创建的这个菜单一切都很完美，除了一件事。当单击主导航项并且子菜单打开时，关闭子菜单的唯一方法是再次单击相同的主导航项。我想这样做，以便如果用户单击主弹出窗口中的其他任何位置，子菜单将关闭。
请参阅下面的代码片段了解我的确切代码：
<!doctype html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang=""> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang=""> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9" lang=""> <![endif]-->
<!--[if gt IE 8]><!-->
<html class="no-js" lang="">
<!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title></title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="apple-touch-icon" href="apple-touch-icon.png">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<style>
body {
padding-top: 50px;
padding-bottom: 20px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
</head>
<body>
<!--[if lt IE 8]>
<p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
<![endif]-->
<!--MAIN CONTENT GOES HERE -->
<style>
/* main menu */
.mainNav {
margin: 0;
padding: 0;
min-height: 100px;
text-align: left;
white-space: normal;
width: 368px;
display: block;
cursor: default;
}
.mainNav-item {
display: inline-block;
vertical-align: top;
}
.mainNav-item a {
text-decoration: none;
color: black;
}
.mainNav-item a:hover {
text-decoration: none;
color: black;
}
.mainNav-item-tile {
display: block;
margin: 6px 5px 6px 5px;
padding: 0;
text-align: center;
line-height: normal;
position: relative;
text-decoration: none;
width: 110px;
height: 110px;
background: transparent;
border-width: 0;
font-size: 14px;
outline-color: #e7e7e7;
background-color: #e7e7e7;
}
.mainNav-item-tile:hover {
outline-color: #ccc;
background-color: #ccc;
}
.mainNav-item-tile-img {
display: block;
padding: 15px;
margin-left: auto;
margin-right: auto;
}
.popover {
max-width: 600px;
width: auto;
}
/* The container <div> - needed to position the dropdown content */
.dropdown {
position: relative;
display: inline-block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1000;
left: 80px;
top: 20px;
}
/* Links inside the dropdown */
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
/* Change color of dropdown links on hover */
.dropdown-content a:hover {
background-color: #f1f1f1
}
</style>
<div style="float: left; cursor: pointer; margin: 13px 15px 0 0">
<img data-toggle="popover" data-placement="bottom" onmouseover="this.src='http://placehold.it/32x32'" onmousedown="this.src='http://placehold.it/32x32'" onmouseout="this.src='http://placehold.it/32x32'" src="http://placehold.it/32x32" />
<div id="popover_content_wrapper" style="display: none;">
<div>
<ul class="mainNav">
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem1</span>
</a>
<div id='content1' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem2</span>
</a>
<div id='content2' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem3</span>
</a>
<div id='content3' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem4</span>
</a>
<div id='content4' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem5</span>
</a>
<div id='content5' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
</ul>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('[data-toggle="popover"]').popover({
html: true,
content: function () {
return $('#popover_content_wrapper').html();
}
});
$('html').on('click', function (e) {
$('[data-toggle="popover"]').each(function () {
//the 'is' for buttons that trigger popups
//the 'has' for icons within a button that triggers a popup
if (!$(this).is(e.target) && $(this).has(e.target).length === 0 && $('.popover').has(e.target).length === 0) {
$(this).popover('hide');
}
});
});
$("html").on("click", ".dropdown", function (e) {
var $this = $(this).children(".dropdown-content");
if ($this.find("a").length > 0) {
e.preventDefault();
$(".dropdown-content:visible").not($this).slideToggle(200); //Close submenu already opened
$this.slideToggle(200); //Open the new submenu
}
});
});
</script>
</body>
</html>单击时将关闭事件添加到父级，并在单击子级时停止事件传播。
将此添加到您的代码中：
$('html').on('click', ".mainNav", function(e) {
$(".dropdown-content:visible").slideToggle(200);
});
并在以下下添加e.stopPropagation();：
$("html").on("click", ".dropdown", function(e) {
这是JSFiddle演示
您可以添加额外的if来处理此问题。
if(!$(e.target).parents('.dropdown').length){
$('.dropdown-content').hide();
}
这说，"如果被点击的东西的父级有一个dropdown类，那么隐藏任何.dropdown-content"。
您可以将hide更改为slideUp，或任何您喜欢的内容。
您发布的代码可以进行优化。将事件挂接到$(document)或<html>是一种不好的做法 - 您应该将其附加到您知道将存在的最低级别元素。对你来说，这至少可能是ul.mainNav.
<!doctype html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang=""> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang=""> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9" lang=""> <![endif]-->
<!--[if gt IE 8]><!-->
<html class="no-js" lang="">
<!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title></title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="apple-touch-icon" href="apple-touch-icon.png">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<style>
body {
padding-top: 50px;
padding-bottom: 20px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
</head>
<body>
<!--[if lt IE 8]>
<p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
<![endif]-->
<!--MAIN CONTENT GOES HERE -->
<style>
/* main menu */
.mainNav {
margin: 0;
padding: 0;
min-height: 100px;
text-align: left;
white-space: normal;
width: 368px;
display: block;
cursor: default;
}
.mainNav-item {
display: inline-block;
vertical-align: top;
}
.mainNav-item a {
text-decoration: none;
color: black;
}
.mainNav-item a:hover {
text-decoration: none;
color: black;
}
.mainNav-item-tile {
display: block;
margin: 6px 5px 6px 5px;
padding: 0;
text-align: center;
line-height: normal;
position: relative;
text-decoration: none;
width: 110px;
height: 110px;
background: transparent;
border-width: 0;
font-size: 14px;
outline-color: #e7e7e7;
background-color: #e7e7e7;
}
.mainNav-item-tile:hover {
outline-color: #ccc;
background-color: #ccc;
}
.mainNav-item-tile-img {
display: block;
padding: 15px;
margin-left: auto;
margin-right: auto;
}
.popover {
max-width: 600px;
width: auto;
}
/* The container <div> - needed to position the dropdown content */
.dropdown {
position: relative;
display: inline-block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1000;
left: 80px;
top: 20px;
}
/* Links inside the dropdown */
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
/* Change color of dropdown links on hover */
.dropdown-content a:hover {
background-color: #f1f1f1
}
</style>
<div style="float: left; cursor: pointer; margin: 13px 15px 0 0">
<img data-toggle="popover" data-placement="bottom" onmouseover="this.src='http://placehold.it/32x32'" onmousedown="this.src='http://placehold.it/32x32'" onmouseout="this.src='http://placehold.it/32x32'" src="http://placehold.it/32x32" />
<div id="popover_content_wrapper" style="display: none;">
<div>
<ul class="mainNav">
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem1</span>
</a>
<div id='content1' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem2</span>
</a>
<div id='content2' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem3</span>
</a>
<div id='content3' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem4</span>
</a>
<div id='content4' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
<li class="mainNav-item dropdown" data-toggle="popover" data-placement="bottom">
<a ID="navItem" runat="server" class="mainNav-item-tile">
<img width="64" height="64" src="http://placehold.it/64x64" class="mainNav-item-tile-img" />
<span>MainMenuItem5</span>
</a>
<div id='content5' class='dropdown-content'>
<a href='#'>SubMenuItem1</a>
<a href='#'>SubMenuItem2</a>
</div>
</li>
</ul>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('[data-toggle="popover"]').popover({
html: true,
content: function () {
return $('#popover_content_wrapper').html();
}
});
$('html').on('click', function (e) {
if(!$(e.target).parents('.dropdown').length){
$('.dropdown-content').hide();
}
$('[data-toggle="popover"]').each(function () {
//the 'is' for buttons that trigger popups
//the 'has' for icons within a button that triggers a popup
if (!$(this).is(e.target) && $(this).has(e.target).length === 0 && $('.popover').has(e.target).length === 0) {
$(this).popover('hide');
}
});
});
$("html").on("click", ".dropdown", function (e) {
var $this = $(this).children(".dropdown-content");
if ($this.find("a").length > 0) {
e.preventDefault();
$(".dropdown-content:visible").not($this).slideToggle(200); //Close submenu already opened
$this.slideToggle(200); //Open the new submenu
}
});
});
</script>
</body>
</html>将其添加到 $（document）.ready（） 中的 JavaScript 代码中
$("html").on("click", ".mainNav", function (e) {
if(e.target.className == "mainNav"){
$(".dropdown-content:visible").slideToggle(200);
}
});
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