我创建了一个带有下拉菜单的导航栏,它似乎没有放在内容上,而是创建了一个向下滚动菜单并在那里显示内容。我也非常感谢解释。
当前代码:
$(".side-toggler").click(function(){
if ($('.hide_menu')[0]) {
$(".sidebar").removeClass("hide_menu");
} else {
$(".sidebar").addClass("hide_menu");
}
});
html , body, a{
color: #ffffff;
font-family: 'Source Sans Pro', sans-serif;
}
.top-header{
background: #3c8dbc;
}
.navbar{
padding: 0px;
}
.navbar-brand{
font-family: "Black Ops One", cursive;
width: 230px;
background-color: rgb(53,124,165);
font-size: 27px;
height: 50px;
}
.navbar-nav{
margin-right: 2%;
}
.navbar-brand2{
font-family: "Black Ops One", cursive;
font-size: 25px;
}
.navbar-brand2:hover ,.navbar-brand:hover, .side-toggler:hover{
color: #ffffff;
text-decoration: none;
}
.dropdown-toggle::after {
display:none
}
.top-bar{
background-color:rgb(53,124,165);
width: 100%;
display: none;
padding: 5px 0 5px 0;
}
.navbar-nav .nav-item i{
font-size: 15px;
font-weight: normal;
}
#nav-badge {
position:absolute;
right: 8px;
top:8px;
font-size: 10px;
font-weight: normal;
}
#notification .nav-link .badge{
right: 10px;
}
.navbar-nav .nav-item a:hover{
background: rgba(0,0,0,0.1);
color: #ffffff;
}
.nav-link{
min-width: 45px;
padding-left: 5px;
}
.nav-link i{
padding-left: 7px;
}
.navbar-nav li a {
height: 50px;
padding-top: 15px;
}
#user a{
display: inline-flex;
}
.top-image{
width: 28px;
height: 28px;
border-radius: 50%;
margin-top: -4px;
}
.top-image-name{
font-family: 'Source Sans Pro', sans-serif;
font-size: 14px;
color: #ebeff2;
font-weight: 400;
margin-left: 12px;
}
.side-toggle{
margin-left: 10px;
}
@media screen and (max-width: 768px) {
.navbar-brand {
display: none;
}
.top-bar{
display: inline-block;
}
.navbar{
overflow-x: hidden;
}
.side-toggler{
padding-left: 8px;
}
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script defer src="https://use.fontawesome.com/releases/v5.0.8/js/all.js"></script>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<header class="top-header">
<div class="top-bar text-center">
<div class="container">
<div class="row">
<div class="col-12">
<a class="navbar-brand2" href="#">Andex-PRO</a></div></div></div>
</div>
<nav class="navbar navbar-expand">
<a class="navbar-brand text-center" href="#">Andex-PRO</a>
<a class="side-toggler mr-auto" href="javascript:void(0);"><i class="fas fa-bars"></i></a>
<ul class="navbar-nav ml-auto">
<li class="nav-item dropdown" id="message">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<i class="far fa-envelope"></i>
<span class="badge badge-success" id="nav-badge">4</span>
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item dropdown" id="notification">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<i class="far fa-bell"></i>
<span class="badge badge-warning" id="nav-badge">8</span>
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item dropdown" id="flag">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<i class="far fa-flag"></i>
<span class="badge badge-danger" id="nav-badge">2</span>
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</nav>
</header>
您的导航列表项需要与 collapse navbar-collapse
类一起包装在div 中。
下面是一个有效的引导程序 4 导航栏示例:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
参考:
https://getbootstrap.com/docs/4.0/components/navbar/