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
这将隐藏下拉列表和它们的插入符号，如果它们比平板电脑小。
@media (max-width: 768px) {
.navbar ul.dropdown-menu, .navbar li.dropdown b.caret {
display: none;
}
}
其他回答
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);
});
以下是我的技巧，它在你停止在菜单或切换按钮上悬停后，在菜单关闭之前添加了轻微的延迟。你通常点击来显示导航菜单的<按钮>是#nav_dropdown。
$(function() {
var delay_close_it, nav_menu_timeout, open_it;
nav_menu_timeout = void 0;
open_it = function() {
if (nav_menu_timeout) {
clearTimeout(nav_menu_timeout);
nav_menu_timeout = null;
}
return $('.navbar .dropdown').addClass('open');
};
delay_close_it = function() {
var close_it;
close_it = function() {
return $('.navbar .dropdown').removeClass('open');
};
return nav_menu_timeout = setTimeout(close_it, 500);
};
$('body').on('mouseover', '#nav_dropdown, #nav_dropdown *', open_it).on('mouseout', '#nav_dropdown', delay_close_it);
return $('body').on('mouseover', '.navbar .dropdown .dropdown-menu', open_it).on('mouseout', '.navbar .dropdown .dropdown-menu', delay_close_it);
});
这招对我很管用:
.dropdown:hover .dropdown-menu {
display: block;
}
这将隐藏下拉列表和它们的插入符号，如果它们比平板电脑小。
@media (max-width: 768px) {
.navbar ul.dropdown-menu, .navbar li.dropdown b.caret {
display: none;
}
}
<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>
<script>
$('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);
});
</script>
