我在页面上有一个多级导航。导航有三到四个级别。我想在下拉菜单中包含所有子菜单的全宽背景。目前,我已经完成了一个级别,但是当点击第一级菜单时,出现第二级菜单,然后背景没有动态地获取高度,并且在第三级菜单的情况下也是如此。由于子菜单处于绝对位置,因此背景的高度不会动态增加。有人可以帮忙吗?我有一个参考网站。 http://www.qsc.com/ ...但是从这里我无法获得代码。我正在准备自己的代码。
$(document).ready(function(){
/*
// Show hide popover
$(".dropdown").click(function(){
$(this).find(".dropdown-menu").slideToggle("fast");
});*/
$('.dropdown-menu').hide();
$('.nav ul li > a').click(function() {
$(this).parent().siblings().find('ul').slideUp(300);
$(this).next('ul').stop(true, false, true).slideToggle(300);
return false;
});
});

/* not very relevant styling */
h1 { font-size: 20px; padding-top: 20px; }
.container { position: relative; margin: 20px auto 0 auto; width: 75%; }
.header { background: #eee; }
.nav { background: #ccc; }
/* relevant styling */
body { overflow-x: hidden; } /* trick from css-tricks comments */
/* FIRST LEVEL */
.nav > ul > li {
display: inline-block;
position: relative;
padding: 3px 10px 3px 0;
z-index: 100;
list-style:none;
}
.nav > ul > li > ul{
width:100px}
.nav > ul > li > a{
color:#939598;
text-decoration:none;
}
/* Level 1 Drop Down */
.dropdown-menu > li {
display: inline-block;
vertical-align: top;
/* solve the 4 pixels spacing between list-items */
}
.dropdown-menu > li:first-child {
margin-left: 0;
}
.dropdown-menu li {
position: relative;
list-style:none;
}
/* SECOND LEVEL ( background -color) of full width bg*/
.nav > ul > li > ul {
position: absolute;
left: 0;
top: 100%;
padding: 0 1000em; /* trick from css-tricks comments */
margin: 0 -1000em; /* trick from css-tricks comments */
z-index: 101;
background:#f2f2f2;
}
/*second level menu*/
.nav li ul li ul li:before {
content: "";
display: block;
width: 1px;
height: 100%;
background-color: #7f7f7f;
position: absolute;
left: 0;
}
.nav > ul > li > ul > li {
padding: 3px 0;
color:#939598;
text-decoration:none;
}
.nav > ul > li > ul > li > a{color:#939598;
text-decoration:none;}
.dropdown-menu li a{
color:#939598;
text-decoration:none;
}
.dropdown-menu li ul li{
color:#939598;
text-decoration:none;
padding-left:5px;}
.dropdown-menu > li > ul {
text-align: left;
display: none;
color:#939598;
text-decoration:none;
position: absolute;
top: 5px;
left: 100%;
z-index: 999999; /* if you have YouTube iframes, is good to have a bigger z-index so the video can appear above the video */
}
.nav .drop {
width:100%!important; /* or: width:1200px!important;*/
box-sizing:border-box;
}
/*Third level menu*/
.dropdown-menu > li > ul > li > ul {
text-align: left;
display: none;
position: absolute;
left: 100%;
top: 0;
z-index: 9999999;
color:#939598;
text-decoration:none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div class="header">
<!-- NAVIGATION -->
<div class="nav">
<ul class="container">
<li class="dropdown">
<a class="drop" href="#">Products</a>
<ul class="dropdown-menu">
<li><a href="#">Live Sound</a>
<ul>
<li>Power AMplifiers</li>
<li>Loud Speakers</li>
<li>Power AMplifiers</li>
<li>Loud Speakers</li>
<li>Power AMplifiers</li>
<li>Loud Speakers</li>
<li>Power AMplifiers</li>
<li>Loud Speakers</li>
<li><a href="#">Touch Mix Mixers</a>
<ul class="dropdown-menu">
<li>GX Series</li>
<li>GXD Series</li>
<li>RMX Series</li>
<li>PLX2 Series</li>
<li>Powerlight three Series</li>
</ul>
</li>
</ul>
</li>
<li><a href="#">System</a></li>
<li><a href="#">Cinema</a></li>
</ul>
</li>
<li class="dropdown">
<a class="drop" href="#">Locations</a>
<ul class="dropdown-menu">
<li><a href="#">Location A</a></li>
<li><a href="#">Location B</a></li>
<li><a href="#">Location C</a></li>
</ul>
</li>
<li class="dropdown">
<a class="drop" href="#">Locations</a>
<ul class="dropdown-menu">
<li><a href="#">Location A</a></li>
<li><a href="#">Location B</a></li>
<li><a href="#">Location C</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="content container">
<p>All sorts of content</p>
<p>All sorts of content</p>
<p>All sorts of content</p>
<p>All sorts of content</p>
<p>All sorts of content</p>
<p>All sorts of content</p>
</div>
&#13;
答案 0 :(得分:0)
您应该将background: #f2f2f2;
提交给ul
。
这里我将菜单类添加到ul并将css添加到菜单类
.menu{
background: #f2f2f2;
}
希望它有所帮助。
修改强>
像给定链接一样做。打开时,您应该将子ul设为position:relative
。如下:
JQuery的:
$(this).next('.sub').toggleClass('menu');
CSS:
.menu{
background: #f2f2f2;
position: relative !important;
}
HTML:
<ul class="sub" >
您可以通过这种方式切换类menu
的类sub
,这样您就可以获得预期的结果。
您可以根据自己的要求进行更改。