我想有我的引导菜单自动下拉悬停,而不是必须点击菜单标题。我还想去掉菜单标题旁边的小箭头。
当前回答
jQuery的解决方案是好的,但它将需要处理点击事件(移动或平板电脑)悬停将无法正常工作…也许可以做一些窗口重新大小检测?
安德烈斯·伊里奇的回答似乎很有效,但它应该被包装在一个媒体问题中:
@media (min-width: 980px) {
.dropdown-menu .sub-menu {
left: 100%;
position: absolute;
top: 0;
visibility: hidden;
margin-top: -1px;
}
.dropdown-menu li:hover .sub-menu {
visibility: visible;
}
.dropdown:hover .dropdown-menu {
display: block;
}
.nav-tabs .dropdown-menu, .nav-pills .dropdown-menu, .navbar .dropdown-menu {
margin-top: 0;
}
.navbar .sub-menu:before {
border-bottom: 7px solid transparent;
border-left: none;
border-right: 7px solid rgba(0, 0, 0, 0.2);
border-top: 7px solid transparent;
left: -7px;
top: 10px;
}
.navbar .sub-menu:after {
border-top: 6px solid transparent;
border-left: none;
border-right: 6px solid #fff;
border-bottom: 6px solid transparent;
left: 10px;
top: 11px;
left: -6px;
}
}
其他回答
这适用于Bootstrap V4
JS:
<script>
$(function() {
$('.dropdown-hover').hover(
function() { $(this).addClass('show'); $(this).find('[data-toggle="dropdown"]').attr('aria-expanded', true); $(this).find('.dropdown-menu').addClass('show'); },
function() { $(this).removeClass('show'); $(this).find('[data-toggle="dropdown"]').attr('aria-expanded',false); $(this).find('.dropdown-menu').removeClass('show'); }
);
});
</script>
Vanilla Bootstrap 4下拉式HTML,除了添加了下拉式悬停类:
<div class="dropdown dropdown-hover">
<button class="btn btn-text dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
ABOUT
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
如果你不想通过使用.dropdown-hover类来选择性地启用悬停功能,那么只需将jquery的选择器从.dropdown-hover更改为.dropdown。
这里是JSFiddle -> https://jsfiddle.net/PRkonsult/mn31qf0p/1/
底部的JavaScript部分是真正起作用的部分。
HTML
<!--http://getbootstrap.com/components/#navbar-->
<div class="body-wrap">
<div class="container">
<nav class="navbar navbar-inverse" role="navigation">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
<li class="divider"></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
</div>
</div>
CSS
/* Bootstrap dropdown hover menu */
body {
font-family: 'PT Sans', sans-serif;
font-size: 13px;
font-weight: 400;
color: #4f5d6e;
position: relative;
background: rgb(26, 49, 95);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(26, 49, 95, 1)), color-stop(10%, rgba(26, 49, 95, 1)), color-stop(24%, rgba(29, 108, 141, 1)), color-stop(37%, rgba(41, 136, 151, 1)), color-stop(77%, rgba(39, 45, 100, 1)), color-stop(90%, rgba(26, 49, 95, 1)), color-stop(100%, rgba(26, 49, 95, 1)));
filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#1a315f', endColorstr='#1a315f', GradientType=0);
}
.body-wrap {
min-height: 700px;
}
.body-wrap {
position: relative;
z-index: 0;
}
.body-wrap: before,
.body-wrap: after {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
z-index: -1;
height: 260px;
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(26, 49, 95, 1)), color-stop(100%, rgba(26, 49, 95, 0)));
background: linear-gradient(to bottom, rgba(26, 49, 95, 1) 0%, rgba(26, 49, 95, 0) 100%);
filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#1a315f', endColorstr='#001a315f', GradientType=0);
}
.body-wrap:after {
top: auto;
bottom: 0;
background: linear-gradient(to bottom, rgba(26, 49, 95, 0) 0%, rgba(26, 49, 95, 1) 100%);
filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#001a315f', endColorstr='#1a315f', GradientType=0);
}
nav {
margin-top: 60px;
box-shadow: 5px 4px 5px #000;
}
JavaScript代码的重要部分:
$('ul.nav li.dropdown').hover(function() {
$(this).find('.dropdown-menu').stop(true, true).delay(200).fadeIn(500);
}, function() {
$(this).find('.dropdown-menu').stop(true, true).delay(200).fadeOut(500);
});
这适用于WordPress Bootstrap:
.navbar .nav > li > .dropdown-menu:after,
.navbar .nav > li > .dropdown-menu:before {
content: none;
}
这样就把上面的隐藏起来了
.navbar .dropdown-menu:before {
display:none;
}
.navbar .dropdown-menu:after {
display:none;
}
使用以下代码在鼠标悬停时打开子菜单(仅适用于桌面):
$('ul.nav li.dropdown').hover(function () {
if ($(window).width() > 767) {
$(this).find('.dropdown-menu').show();
}
}, function () {
if ($(window).width() > 767) {
$(this).find('.dropdown-menu').hide().css('display','');
}
});
如果你想让第一关菜单是可点击的,甚至在手机上也可以添加这个:
$('.dropdown-toggle').click(function() {
if ($(this).next('.dropdown-menu').is(':visible')) {
window.location = $(this).attr('href');
}
});
子菜单(下拉菜单)将打开鼠标悬停在桌面上,点击/触摸移动和平板电脑。 一旦子菜单打开,第二次单击将让您打开链接。 多亏了if ($(window).width() > 767),子菜单将在移动设备上采用全屏宽度。