多級引導導航欄：無法懸停在子元素上
[英]Multi-level bootstrap Navbar: Can't hover on children elements
問題描述
所以我試圖在我的項目中使用 Bootstrap Navbar 和額外的 CSS 和 Jquery 創建一個多級導航欄。
這是代碼： CodePen
$(function() { // ------------------------------------------------------- // // Multi Level dropdowns // ------------------------------------------------------ // $("ul.dropdown-menu [data-toggle='dropdown']").on("mouseover", function(event) { event.preventDefault(); event.stopPropagation(); $(this).siblings().toggleClass("show"); }); $("ul.dropdown-menu [data-toggle='dropdown']").on("mouseleave", function(event) { $(this).siblings().removeClass("show"); }); });
.dropdown-submenu { position: relative; } .dropdown-submenu>a:after { content: "\\f0da"; float: right; border: none; font-family: 'FontAwesome'; } .dropdown-submenu>.dropdown-menu { top: 0; left: 100%; margin-top: 0px; margin-left: 0px; } .dropdown-item { padding: .25rem 0.5rem!important; }
<html lang="en"> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <link href="https://fonts.googleapis.com/css?family=Open+Sans:400,700&display=swap" rel="stylesheet"> <link href="https://fonts.googleapis.com/css?family=Oswald:400,700&display=swap" rel="stylesheet"> <link href="https://fonts.googleapis.com/css?family=Material+Icons|Material+Icons+Outlined" rel="stylesheet" /> <link href="https://fonts.googleapis.com/css?family=Roboto:400,500&display=swap" rel="stylesheet"> <script src="https://kit.fontawesome.com/5336ef90a8.js" crossorigin="anonymous"></script> <title>Test</title> </head> <body> <!-- Navbar --> <nav class="navbar navbar-expand-md navbar-light bg-light"> <a class="navbar-brand" href="./"> <img class="favicon" src="{{asset('img/Favicon.ico')}}" alt=""> </a> <button class="navbar-toggler d-lg-none" type="button" data-toggle="collapse" data-target="#headerNav" aria-controls="headerNav" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="headerNav"> <ul class="navbar-nav mr-auto"> <li class="nav-item"> <a class="nav-link" href="/">Home <span class="sr-only">(current)</span></a> </li> <!-- Level one dropdown --> <li class="nav-item dropdown"> <a id="dropdownMenu1" href="#" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="nav-link dropdown-toggle">CATEGORIES</a> <ul aria-labelledby="dropdownMenu1" class="dropdown-menu border-0 shadow"> <li class="dropdown-submenu"> <a id="dropdownMenu2" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="dropdown-item dropdown-toggle">CEILING FANS</a> <ul aria-labelledby="dropdownMenu2" class="dropdown-menu border-0 shadow"> <li> <a tabindex="-1" href="#" class="dropdown-item">CF1</a> </li> <li><a href="#" class="dropdown-item">CF2</a></li> <li><a href="#" class="dropdown-item">CF3</a></li> </ul> </li> <li class="dropdown-submenu"> <a id="dropdownMenu2" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="dropdown-item dropdown-toggle">TABLE FANS</a> <ul aria-labelledby="dropdownMenu2" class="dropdown-menu border-0 shadow"> <li> <a tabindex="-1" href="#" class="dropdown-item">TF1</a> </li> <li><a href="#" class="dropdown-item">TF2</a></li> <li><a href="#" class="dropdown-item">TF3</a></li> </ul> </li> <li class="dropdown-submenu"> <a id="dropdownMenu2" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="dropdown-item dropdown-toggle">EXHAUST FANS</a> <ul aria-labelledby="dropdownMenu2" class="dropdown-menu border-0 shadow"> <li> <a tabindex="-1" href="#" class="dropdown-item">EF1</a> </li> <li><a href="#" class="dropdown-item">EF2</a></li> <li><a href="#" class="dropdown-item">EF3</a></li> </ul> </li> </ul> </li> <!-- End Level one --> </ul> </div> </nav> <!-- End Navbar --> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.slim.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> <script src="https://kit.fontawesome.com/67aa126bbd.js" crossorigin="anonymous"></script> </body> </html>
問題是我不能懸停在像 CF1、CF2、CF3 之類的孩子身上。 當我將鼠標移出其父元素（即吊扇）時，子菜單消失。
1 個解決方案
解決方案1
1 已采納 2020-01-01 05:43:52
只需添加此 CSS
.dropdown-submenu:hover .dropdown-menu {
display: block;
}
在多級導航中打開子項並關閉其他子項
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