本文实例为大家分享了js实现前端界面导航栏下拉列表的具体代码,供大家参考,具体内容如下
先来看成果图
html代码:
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< nav >
< ul class = "nav" >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表一
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 116px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表二
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 145px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表三
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 145px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表四
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 116px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表五
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 116px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表六
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 116px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
< li class = "dropDowm" >
< a href = "javascript:;" class = "dropdown-toggle" >
列表七
</ a >
< ul class = "dropdown-menu" style = "display: none;height: 116px;padding-top: 0px;margin-top: 0px;padding-bottom: 0px;margin-bottom: 0px;" >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< li >< a href = "#" >概述</ a ></ li >
< div class = "ulbg" ></ div >
</ ul >
</ li >
</ ul >
</ nav >
|
css代码:
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nav {
background-color : #efe5e5 ;
width : 77% ;
}
.nav{
height : 50px ;
width : 100% ;
display : flex;
}
.nav .dropDowm{
float : left ;
width : 14% ;
list-style : none ;
}
.nav .dropDowm>a{
text-decoration : none ;
margin : 12px ;
line-height : 3 ;
}
.nav .dropDowm .dropdown-menu{
background-color : #848d9e ;
}
.nav .dropDowm .dropdown-menu>li{
list-style : none ;
display : block ;
}
.nav .dropDowm .dropdown-menu>li>a{
text-decoration : none ;
display : block ;
font-size : 16px ;
line-height : 28px ;
}
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最重要的是js代码 利用js代码控制
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$( function (){
$( '.nav .dropDowm' ).hover( function (e) {
$( this ).find( 'ul' ).stop().slideToggle();
});
});
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简短介绍:
slideToggle() 方法通过使用滑动效果(高度变化)来切换元素的可见状态。
如果被选元素是可见的,则隐藏这些元素,如果被选元素是隐藏的,则显示这些元素。
如果运行出现(F12查看):
解决 在头部加上jquery的js文件即可
比如,这是小编的js目录下的 别忘了下载再引入
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<script type= "text/javascript" src= "js/jquery-1.8.3.js" ></script>
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以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/qq_40825627/article/details/84970757