我只是想让我的导航栏在屏幕顶部有一个固定的位置,所以当用户向下滚动它应该保持在顶部,但由于某种原因它没有这样做。
$(document).ready(function(){
$(window).bind('scroll', function() {
var navHeight = $( window ).height() - 286;
if ($(window).scrollTop() > navHeight) {
$('nav').addClass('fixed');
}
else {
$('nav').removeClass('fixed');
}
});
});

.section {
background-color: Red;
padding: 33px 0;
height: 5000px;
}
.fixed {
position: fixed;
left: 20;
top: 0;
width: 100%;
list-style: none;
z-index: 1;
}
#navs li {
margin: 0 0 10px 0;
}
#navs li a {
font-size: 0.9em;
font-weight: 600;
color: #999999;
text-decoration: none;
text-transform: uppercase;
-webkit-transition: all 0.3s;
-moz-transition: all 0.3s;
-o-transition: all 0.3s;
transition: all 0.3s;
}
#navs li:hover {
color: #FFFFFF;
font-size: 18px;
}
#navs li a.active {
color: #FFFFFF;
font-size: 18px;
}
/* For Index 2 */
.navbar {
min-height: 70px;
}
.navbar-nav {
float: none;
margin: 0;
text-align: center;
}
.navbar-nav > li {
float: none;
display: inline-block;
}
.navbar-nav > li > a {
line-height: 38px;
}
.navbar-nav > li > a.active {
background-color: #E7E7E7;
}
.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {
color: #333333;
background-color: #E7E7E7;
}
.sticky-wrapper.is-sticky .main-nav {
width: 100%;
z-index: 10;
}
.navbar-toggle {
background-color: #000000;
background-image: none;
border: 1px solid #000000 !important;
border-radius: 4px;
float: right;
margin-bottom: 8px;
margin-right: 15px;
margin-top: 18px;
padding: 9px 10px;
position: relative;
}
.navbar-inverse .navbar-toggle .icon-bar {
background-color: #2DCC70;
.navbar-default .navbar-toggle:hover,
.navbar-default .navbar-toggle:focus {
background-color: #000000;
}
.navbar-inverse .navbar-collapse,
.navbar-inverse .navbar-form {
border-color: transparent;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="main-nav">
<nav class="navbar navbar-default" role="navigation">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="navbar-collapse collapse" id="bs-example-navbar-collapse-1" style="height: 0px;">
<ul class="nav navbar-nav">
<li class="active"><a href="#home" class="colapse-menu1">Home</a></li>
<li class=""><a href="#about" class="colapse-menu1">About Me</a></li>
<li class=""><a href="#resume" class="colapse-menu1">My Skills</a></li>
<li class=""><a href="#skills" class="colapse-menu1">Portfoilo</a></li>
<li class=""><a href="#service" class="colapse-menu1">Contact Me</a></li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
</div>
<div class="section">
</div>
&#13;
当我刷新它时,当我在页面的一半时,酒吧会回到顶部,真的应该留在那里
我一直在使用this示例并尝试实现它;你可以看到你是否向下滚动到一半并刷新了酒吧,但是我没有
答案 0 :(得分:1)
我只是想让我的导航栏在顶部有一个固定的位置 屏幕,所以当用户向下滚动时,它应该保持在顶部
标记
<nav class='primary-navigation'>
nav stuff...
</nav>
样式
.primary-navigation {
position: fixed;
top: 0;
left: 0;
width: 100%;
}
jsFiddle:https://jsfiddle.net/sheriffderek/3ahupnrk/
我一直在使用这个例子并尝试实现它;你可以看看是否 你向下滚动到一半并刷新酒吧,但我的确如此 不
如果您尝试仅在某些条件下使用导航 - 例如此示例,则这是一个广泛评论的示例:https://jsfiddle.net/sheriffderek/zdtLawL4/ - 这是另一个稍微不同的示例:http://codepen.io/sheriffderek/pen/zLEkr < / p>
我希望它有所帮助。