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
对于插入符号…我还没见过有人指定简单的CSS完全阻止插入符号。
给你:
.caret {
display: none !important;
}
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); $(this).find('.dropdown-menu').removeClass('show'); }
);
});
</script>
Vanilla Bootstrap 4下拉式HTML，除了添加了下拉式悬停类:
<div class="dropdown dropdown-hover">
<button class="btn btn-text dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
ABOUT
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
如果你不想通过使用.dropdown-hover类来选择性地启用悬停功能，那么只需将jquery的选择器从.dropdown-hover更改为.dropdown。
使用jQuery会更好:
jQuery('ul.nav li.dropdown').hover(function() {
jQuery(this).find('.dropdown-menu').stop(true, true).show();
jQuery(this).addClass('open');
}, function() {
jQuery(this).find('.dropdown-menu').stop(true, true).hide();
jQuery(this).removeClass('open');
});
我们看到，除了“My Head Hurts”的答案，“Cory Price”还发现了两个问题:
问题1:单击下拉链接将打开下拉菜单。它会一直打开，除非用户点击某个地方 或者返回到它上面，创建一个尴尬的UI。 解决方案:从导航链接中删除“class”和“data-toggle”元素
这个解决方案近乎完美，但这里的问题是，当涉及到移动设备和平板电脑时，它就行不通了!
我使用了一些jQuery代码来修复这个问题..
if ($(window).width() > 769) {
$('.dropdown-toggle').removeAttr('data-toggle');
$('.dropdown-menu').removeAttr('style');
$('.dropdown').removeClass('open');
}
$(window).resize(function () {
if ($(window).width() > 769) {
$('.dropdown-toggle').removeAttr('data-toggle');
$('.dropdown-menu').removeAttr('style');
$('.dropdown').removeClass('open');
}
else {
$('.dropdown-toggle').attr("data-toggle", "dropdown");
}
});
注意:这里我们假设移动设备和平板电脑的折痕从768px开始。
我希望这能有所帮助。查看链接https://jsfiddle.net/awb7gfb1/
<nav>
<div id="menubar" class=" collapse navbar-collapse row">
<ul id="dropdownNavbar" class="nav navbar-nav">
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn"><span class="glyphicon glyphicon-time"></span>
Time Card
<span class="caret"></span></button>
<div class="dropdown-content">
<a id="showTimeCard" href="#">My Time Card</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
<a href="#">Sub Menu 4</a>
<a href="#">Sub Menu 5</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn"><span class="glyphicon glyphicon-stats"></span>
Project
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn"><span class="glyphicon glyphicon-user"></span>
HR Links
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn">
<span class="glyphicon glyphicon-screenshot"></span>
Leave Tracker
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
<a href="#">Sub Menu 4</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn">
<span class="glyphicon glyphicon-briefcase"></span>
Accounts
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
<a href="#">Sub Menu 4</a>
<a href="#">Sub Menu 5</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn">
<span class="glyphicon glyphicon-headphones"></span>
Service Desk
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
<a href="#">Sub Menu 4</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn">
<span class="glyphicon glyphicon-file"></span>
Reports
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
<a href="#">Sub Menu 4</a>
<a href="#">Sub Menu 5</a>
</div>
</li>
<li class="dropdown">
<button type="button" class="btn btn-primary dropbtn">
<span class="glyphicon glyphicon-cog"></span>
Settings
<span class="caret"></span></button>
<div class="dropdown-content">
<a href="#">Sub Menu 1</a>
<a href="#">Sub Menu 2</a>
<a href="#">Sub Menu 3</a>
</div>
</li>
</ul>
</div>
</nav>
还有CSS
.dropdown {
float: left;
padding-right: 1px;
}
.dropbtn{
border: 0px;
height: 30px;
border-radius: 0px 10px;
}
li button, .dropbtn {
display: inline-block;
color: white;
text-align: center;
}
li button:hover, .dropdown:hover .dropbtn {
background-color: #12A5F4;
}
.dropbtn.active {
background: #12A5F4;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #e8f3f4;
min-width: 100%;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.1);
z-index: 10;
}
.navbar-header{
overflow: visible;
z-index: 1;
}
.dropdown-content a {
color: black;
padding: 5px 10px;
display: block;
text-align: left;
}
.dropdown-content a:hover {
background-color: #d8dee2
}
.dropdown:hover .dropdown-content {
display: block;
}
#menubar{
padding-top: 5px;
overflow: visible;
z-index: 10;
padding-left: 0px;
padding-right: 0px;
margin: 0px;
}
#dropdownNavbar{
margin: 0px;
}
.navbar-toggle{
background-color: #3382d5;
}
.navbar-toggle span{
background-color: white;
}
对于插入符号…我还没见过有人指定简单的CSS完全阻止插入符号。
给你:
.caret {
display: none !important;
}
