我是 javascript 和 css 的新手。我正在尝试从 this W3Schools example 添加菜单.代码工作正常。但我想在菜单代码中添加另一个级别，使其成为多级菜单(2 级)。我怎样才能做到这一点？我确实尝试过，但它没有相应地工作。希望这里的专家能提供一些建议或建议。非常感谢您的意见或建议。 提前致谢。 以下是更改的代码。
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {
font-family: Arial, Helvetica, sans-serif;
margin: 0;
}
.navbar {
overflow: hidden;
background-color: #333;
}
.navbar a {
float: left;
font-size: 16px;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.subnav {
float: left;
overflow: hidden;
}
.subnav .subnavbtn {
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.navbar a:hover, .subnav:hover .subnavbtn {
background-color: red;
}
.subnav-content {
display: none;
position: absolute;
left: 0;
background-color: red;
width: 100%;
z-index: 1;
}
.subnav-content a {
float: left;
color: white;
text-decoration: none;
}
.subnav-content a:hover {
background-color: #eee;
color: black;
}
.subnav:hover .subnav-content {
display: block;
}
.subnav1 {
float: left;
overflow: hidden;
}
.subnav1 .subnavbtn1 {
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.subnav-content1 {
display: none;
position: absolute;
left: 0;
background-color: blue;
width: 100%;
z-index: 1;
}
.subnav-content1 a {
float: left;
color: white;
text-decoration: none;
}
.subnav-content1 a:hover {
background-color: yellow;
color: black;
}
</style>
</head>
<body>
<div class="navbar">
<a href="#home">Home</a>
<div class="subnav">
<button class="subnavbtn">About <i class="fa fa-caret-down"></i></button>
<div class="subnav-content">
<a href="#company">Company</a>
<a href="#team">Team</a>
<div class="subnav1">
<button class="subnavbtn1">Career <i class="fa fa-caret-down"></i></button>
<div class="subnav-content1">
<a href="#company">Career 1</a>
<a href="#team" >Career 2</a>
<a href="#careers">Careers 3</a>
</div>
</div>
</div>
</div>
<div class="subnav">
<button class="subnavbtn">Services <i class="fa fa-caret-down"></i></button>
<div class="subnav-content">
<a href="#bring">Bring</a>
<a href="#deliver">Deliver</a>
<a href="#package">Package</a>
<a href="#express">Express</a>
</div>
</div>
<div class="subnav">
<button class="subnavbtn">Partners <i class="fa fa-caret-down"></i></button>
<div class="subnav-content">
<a href="#link1">Link 1</a>
<a href="#link2">Link 2</a>
<a href="#link3">Link 3</a>
<a href="#link4">Link 4</a>
</div>
</div>
<a href="#contact">Contact</a>
</div>
<div style="padding:0 16px">
<h3>Subnav/dropdown menu inside a Navigation Bar</h3>
<p>Hover over the "about", "services" or "partners" link to see the sub navigation menu.</p>
</div>
</body>
</html>最佳答案
.subnav:hover .subnav-content, .subnav1:hover .subnav-content1 {
display: block;
}
您需要为类 subnav1 和 subnav-content1 添加 css
关于html - 多级下拉菜单，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58295890/