如何在當前代碼中獲取子菜單？

Question

我正在使用定制的 css 和 html 來設計一個網站。 我想在我的導航欄菜單中創建子菜單，盡管我不能這樣做。 就像我想要一個“服務”作為主菜單中的一個選項，然后是“打印媒體”作為“服務”的子菜單，然后是“選項1”“選項2”“選項3”“選項4”作為子菜單“印刷媒體”

結構應如下所示：

Services->PrintMedia->Option1;
                    ->Option2;
                    ->Option3;
                    ->Option4;
Services->ElectronicMedia->Option5;
                         ->Option6;
                         ->Option7;
                         ->Option7;

我想讓它響應..！

我已經嘗試了很多可能的事情，但是由於我自定義的 CSS，我無法按原樣實現代碼。

 <div class="navbar navbar-inverse" role="banner">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                    <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="index.html">
                    <h1><img src="images/press-monitor.png" alt="Press Monitor" width="40%" height="auto"></h1>
                </a>

            </div>
            <div class="collapse navbar-collapse">
                <ul class="nav navbar-nav navbar-right">
                    <li class="active"><a href="index.html">Home</a></li>
                    <li class="dropdown"><a href="#">Pages <i class="fa fa-angle-down"></i></a>
                        <ul role="menu" class="sub-menu">
                            <li><a href="aboutus.html">About</a></li>
                            <li><a href="aboutus2.html">About 2</a></li>
                            <li><a href="service.html">Services</a></li>                    
                            <li><a href="pricing.html">Pricing</a></li>
                            <li><a href="contact.html">Contact us</a></li>
                            <li><a href="contact2.html">Contact us 2</a></li>
                            <li><a href="404.html">404 error</a></li>
                            <li><a href="coming-soon.html">Coming Soon</a></li>
                        </ul>
                    </li>                    
                    <li class="dropdown"><a href="blog.html">Blog <i class="fa fa-angle-down"></i></a>
                        <ul role="menu" class="sub-menu">
                            <li><a href="blog.html">Blog Default</a></li>
                            <li><a href="blogtwo.html">Timeline Blog</a></li>
                            <li><a href="blogone.html">2 Columns + Right Sidebar</a></li>
                            <li><a href="blogthree.html">1 Column + Left Sidebar</a></li>
                            <li><a href="blogfour.html">Blog Masonary</a></li>
                            <li><a href="blogdetails.html">Blog Details</a></li>
                        </ul>
                    </li>
                    <li class="dropdown"><a href="portfolio.html">Portfolio <i class="fa fa-angle-down"></i></a>
                        <ul role="menu" class="sub-menu">
                            <li><a href="portfolio.html">Portfolio Default</a></li>
                            <li><a href="portfoliofour.html">Isotope 3 Columns + Right Sidebar</a></li>
                            <li><a href="portfolioone.html">3 Columns + Right Sidebar</a></li>
                            <li><a href="portfoliotwo.html">3 Columns + Left Sidebar</a></li>
                            <li><a href="portfoliothree.html">2 Columns</a></li>
                            <li><a href="portfolio-details.html">Portfolio Details</a></li>
                        </ul>
                    </li>                         
                    <li><a href="shortcodes.html ">Shortcodes</a></li>                    
                </ul>
            </div>
            <div class="search">
                <form role="form">
                    <i class="fa fa-search black"></i>
                    <div class="field-toggle">
                        <input type="text" class="search-form" autocomplete="off" placeholder="Search">
                    </div>
                </form>
            </div>
        </div>
    </div>

CSS

/* 下拉式菜單*/

ul.sub-menu {
  display: none;
  list-style: none;
  padding: 0;
  margin: 0;
}

#header .navbar-nav li ul.sub-menu li a{
  color: #818285;
  padding: 5px 0;
  font-size: 13px;
  display: block;
  text-transform: capitalize;
}

#header .navbar-nav li ul.sub-menu li .active{
  background: #00aeef;
  color: #fff;
  position: relative;
}

#header .navbar-nav li ul.sub-menu li .active i{
  position: absolute;
  font-size: 56px;
  top: -13px;
  color: #0884d5;
}

#header .navbar-nav li ul.sub-menu li .active .fa-angle-right{
  left: -3px;
}

#header .navbar-nav li ul.sub-menu li .active .fa-angle-left{
  right: -3px;
}

#header .navbar-nav li ul.sub-menu li a:hover,
#header .navbar-nav li ul.sub-menu li a:focus{
  background: #c80000 ;
  color: #fff;
}

這是為了使其響應

@media only screen and (min-width: 768px) {
    .nav.navbar-nav>li:hover>ul.sub-menu {
        display: block;
        -webkit-animation: fadeInUp 400ms;
        animation: fadeInUp 400ms;
    }
    .nav.navbar-nav>li:hover>ul.sub-sub-menu {
        display: block;
        -webkit-animation: fadeInUp 400ms;
        animation: fadeInUp 400ms;
    }
    ul.sub-menu {
        position: absolute;
        top: 60px;
        left: 0;
        background: #fff;
        padding: 10px 0;
        width: 240px;
        -webkit-box-shadow: none;
        box-shadow: none;
        display: none;
        z-index: 999;
        border: 1px solid #c80000;
    }

        ul.sub-sub-menu {
        position: absolute;
        top: 60px;
        left: 60px;
        background: #fff;
        padding: 10px 0;
        width: 240px;
        -webkit-box-shadow: none;
        box-shadow: none;
        display: none;
        z-index: 999;
        border: 1px solid #c80000;
    }
    #header .navbar-nav li ul.sub-menu li a {
        padding-left: 20px;
    }
}


Services->PrintMedia->Option1;
                    ->Option2;
                    ->Option3;
                    ->Option4;

Services->ElectronicMedia->Option5;
                         ->Option6;
                         ->Option7;
                         ->Option7;

Answer 1

根據我的理解，您正在尋找嵌套的子菜單。 如果，是，下面是相同的解決方案。 源Skally Codeply

 $('.dropdown-menu a.dropdown-toggle').on('click', function(e) { if (!$(this).next().hasClass('show')) { $(this).parents('.dropdown-menu').first().find('.show').removeClass("show"); } var $subMenu = $(this).next(".dropdown-menu"); $subMenu.toggleClass('show'); $(this).parents('li.nav-item.dropdown.show').on('hidden.bs.dropdown', function(e) { $('.dropdown-submenu .show').removeClass("show"); }); return false; });

 .dropdown-submenu { position: relative; } .dropdown-submenu>.dropdown-menu { top: 0; left: -10rem; /* 10rem is the min-width of dropdown-menu */ margin-top: -6px; } /* rotate caret on hover */ .dropdown-menu>li>a:hover:after { text-decoration: underline; transform: rotate(-90deg); }

 <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-md navbar-light bg-light"> <a class="navbar-brand pb-2" href="#">Navbar</a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarNavDropdown"> <ul class="navbar-nav ml-auto"> <li class="nav-item active"> <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Dropdown </a> <ul class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdownMenuLink"> <li><a class="dropdown-item" href="#">Action</a></li> <li><a class="dropdown-item" href="#">Another action</a></li> <li class="dropdown-submenu"><a class="dropdown-item dropdown-toggle" href="#">Submenu wider text</a> <ul class="dropdown-menu"> <li><a class="dropdown-item" href="#">Submenu</a></li> <li><a class="dropdown-item" href="#">Submenu0</a></li> <li class="dropdown-submenu"><a class="dropdown-item dropdown-toggle" href="#">Submenu 1</a> <ul class="dropdown-menu"> <li><a class="dropdown-item" href="#">Subsubmenu1</a></li> <li><a class="dropdown-item" href="#">Subsubmenu1</a></li> </ul> </li> <li class="dropdown-submenu"><a class="dropdown-item dropdown-toggle" href="#">Submenu 2</a> <ul class="dropdown-menu"> <li><a class="dropdown-item" href="#">Subsubmenu2</a></li> <li><a class="dropdown-item" href="#">Subsubmenu2</a></li> </ul> </li> </ul> </li> </ul> </li> </ul> </div> </nav> </body> </html>