我需要的很简单。
我已经设置了一个导航栏，其中有一些下拉菜单(使用class="dropdown-toggle" data-toggle="dropdown")，它工作得很好。
事情是它工作“onClick”，而我宁愿如果它工作“onHover”。
有什么内置的方法可以做到这一点吗?
当前回答
超文本标记语言
<div class="dropdown">
<button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
Dropdown Example <span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">HTML</a></li>
<li><a href="#">CSS</a></li>
<li><a href="#">JavaScript</a></li>
</ul>
</div>
jquery
$(document).ready( function() {
/* $(selector).hover( inFunction, outFunction ) */
$('.dropdown').hover(
function() {
$(this).find('ul').css({
"display": "block",
"margin-top": 0
});
},
function() {
$(this).find('ul').css({
"display": "none",
"margin-top": 0
});
}
);
});
codepen
其他回答
用jquery的Bootstrap 5版本
只需添加悬停类下拉和添加以下代码到主javascript文件
// Hoverable dropdown
$('.dropdown.hoverable').on({
mouseenter: function(){
var dropdown = $(this).children('.dropdown-menu');
if(!dropdown.hasClass('show') && dropdown.css('position') !== 'static'){ // Ignore collapsed navbar
bootstrap.Dropdown.getOrCreateInstance(this).toggle();
}
},
mouseleave: function(){
var dropdown = $(this).children('.dropdown-menu');
if(dropdown.hasClass('show') && dropdown.css('position') !== 'static'){ // Ignore collapsed navbar
bootstrap.Dropdown.getOrCreateInstance(this).toggle();
}
}
});
在Twitter Bootstrap没有实现，但你可以使用这个插件
更新1:
同样的问题
超文本标记语言
<div class="dropdown">
<button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
Dropdown Example <span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">HTML</a></li>
<li><a href="#">CSS</a></li>
<li><a href="#">JavaScript</a></li>
</ul>
</div>
jquery
$(document).ready( function() {
/* $(selector).hover( inFunction, outFunction ) */
$('.dropdown').hover(
function() {
$(this).find('ul').css({
"display": "block",
"margin-top": 0
});
},
function() {
$(this).find('ul').css({
"display": "none",
"margin-top": 0
});
}
);
});
codepen
测试和工作良好
<nav class="dnt_show_mbl navbar navbar-default navbar-fixed-top" >
<div class="container" style="width:100%;">
<div class="navbar-header" style="height:90px;">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand dnt_show_mbl" href="index.html" style="margin-left:100%;margin-top:2%;">
<img src="material/logo.png" width="160px;" alt="visoka">
</a>
<a class="navbar-brand dontdisplaylg" href="index.html" style="" alt="visoka">
<img src="material/logo.png" width="200px;">
</a>
</div>
<div class="collapse navbar-collapse" id="myNavbar" style="background-color: #fff;border-color:#fff;">
<ul class="nav navbar-nav navbar-right" style="margin-top: 4px;margin-right: 180px;padding:15px;letter-spacing:1px;color:#000;">
<li><a href="index.html" style="font-family: Inter !important;">HOME</a></li>
<li><a href="About-Us.html" style="font-family: Inter !important;">ABOUT US</a></li>
<li class="dropdown-header" style="margin-top:-3px;margin-left:-3%;" onmouseout="out_menu();" onmouseover="on_menu();">
<a style="font-family: Inter !important;" class="dropdown-toggle" href="Projects.html">PROJECTS
<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="Projects.html#ongoing" style="font-family: Inter !important;">Ongoing Projects</a></li><br>
<li><a href="Projects.html#completed" style="font-family: Inter !important;">Completed Projects</a></li><br>
<li><a href="Projects.html#upcoming" style="font-family: Inter !important;">Upcoming Projects</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
<script>
function on_menu(){
$(".dropdown-header:first").addClass("open");
}
function out_menu(){
$(".dropdown-header:first").removeClass("open");
}
</script>
在引导5。X，你可以添加一个自定义类，如下拉悬停到主下拉元素。然后管理悬停事件的JQuery。
$( document ).ready(function() { // Add hover action for dropdowns let dropdown_hover = $(".dropdown-hover"); dropdown_hover.on('mouseover', function(){ let menu = $(this).find('.dropdown-menu'), toggle = $(this).find('.dropdown-toggle'); menu.addClass('show'); toggle.addClass('show').attr('aria-expanded', true); }); dropdown_hover.on('mouseout', function(){ let menu = $(this).find('.dropdown-menu'), toggle = $(this).find('.dropdown-toggle'); menu.removeClass('show'); toggle.removeClass('show').attr('aria-expanded', false); }); }); <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/css/bootstrap.min.css"> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container p-5"> <div class="dropdown dropdown-hover"> <button class="btn btn-secondary dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false"> Dropdown button </button> <ul class="dropdown-menu"> <li> <a class="dropdown-item" href="#">Action</a> </li> <li> <a class="dropdown-item" href="#">Another action</a> </li> <li> <a class="dropdown-item" href="#">Something else here</a> </li> </ul> </div> </div> </body> </html>
