basic navigation
navigation is a concerful section for a common website , so make a navigation to a basic and vital task , totaly the ui of navigation is seem accordant , the core of all is layout about left and right , the event of onclick , the on or off for the secondList
using native javascript
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel='stylesheet' href='./reset.css'/>
<link rel='stylesheet' href='./pattern.css'/>
<link rel='stylesheet' href='./iconfont.css'/>
<title>the navigation for using native summary</title>
</head>
<body>
<div id='nav'>
<div id='nav_title'>
<h3><a href='javascript:;'>FutureWorld</a></h3>
</div>
<div id='nav_body'>
<ul>
<li>
<p onclick='showSecond()'><a href='javascript:;'><sapn>mainpag</sapn> <i class='iconfont icon-xiasanjiaoxing'></i></a></p>
<div class='secondList'>
<ul class='childList'>
<li><a href='javascript:;'>make different</a></li>
<li><a href='javascript:;'>choice of jobs</a></li>
<li><a href='javascript:;'>stand up write</a></li>
<li><a href='javascript:;'>about this event</a></li>
</ul>
</div>
</li>
<li>
<p><a href='javascript:;'><sapn>technology</sapn> <i class='iconfont icon-xiasanjiaoxing'></i></a></p>
<div>
<ul class='childList'>
<li><a href='javascript:;'>night star shine</a></li>
<li><a href='javascript:;'>silence and cold</a></li>
<li><a href='javascript:;'>foan sing enling </a></li>
<li><a href='javascript:;'>funale ksng lssso</a></li>
</ul>
</div>
</li>
<li>
<p><a href='javascript:;'>social</a></p>
</li>
<li>
<p><a href='javascript:;'>famous</a></p>
</li>
</ul>
</div>
</div>
<div id='contain'>
</div>
<script>
let para=document.getElementById('nav_body').getElementsByTagName('p')
for(let i=0; i<para.length;i++){
para[i].onclick=function(){
let secondListName=this.nextElementSibling.className
if(secondListName=='secondList'){
this.nextElementSibling.className=' '
}else{
this.nextElementSibling.className ='secondList'
}
}
}
</script>
</body>
</html>
#nav {
height:56px;
box-sizing:border-box;
padding:0 30px 0 30px;
display:flex;
flex-direction:row;
justify-content:space-between;
align-items:center;
}
#nav>#nav_title {
float:left;
}
#nav>#nav_body>ul>li {
float:left;
margin-left:40px;
position:relative;
}
#nav a {
color:#000;
}
#nav .secondList {
display:none;
}
#nav .childList {
position:absolute;
right:0;
top:28px;
box-sizing:border-box;
padding:10px 20px;
width:200px;
height:180px;
border:1px solid rgb(200,200,200);
background-color:rgb(255, 255, 255);
}
#nav .childList>li {
margin:6px;
padding-bottom:8px;
border-bottom:1px solid rgb(220,220,220)
}
#nav .childList>li>a {
color:rgb(80,80,80)
}
#contain {
height:500px;
background-color:rgb(242,242,242)
}
using jQuery
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel='stylesheet' href='./reset.css'/>
<link rel='stylesheet' href='./pattern.css'/>
<link rel='stylesheet' href='./iconfont.css'/>
<script src='./jquery-3.5.1.js'></script>
<script src='./index.js'></script>
<title>the navigation for using jquery</title>
</head>
<body>
<div id='nav'>
<div id='nav_title'>
<h3><a href='javascript:;'>FutureWorld</a></h3>
</div>
<div id='nav_body'>
<ul>
<li>
<p class='body_menu'><a href='javascript:;'><sapn>mainpag</sapn> <i class='iconfont icon-xiasanjiaoxing'></i></a></p>
<div class='secondList'>
<ul class='childList'>
<li><a href='javascript:;'>make different</a></li>
<li><a href='javascript:;'>choice of jobs</a></li>
<li><a href='javascript:;'>stand up write</a></li>
<li><a href='javascript:;'>about this event</a></li>
</ul>
</div>
</li>
<li>
<p class='body_menu'><a href='javascript:;'><sapn>technology</sapn> <i class='iconfont icon-xiasanjiaoxing'></i></a></p>
<div class='secondList'>
<ul class='childList'>
<li><a href='javascript:;'>night star shine</a></li>
<li><a href='javascript:;'>silence and cold</a></li>
<li><a href='javascript:;'>foan sing enling </a></li>
<li><a href='javascript:;'>funale ksng lssso</a></li>
</ul>
</div>
</li>
<li>
<p><a href='javascript:;'>social</a></p>
</li>
<li>
<p><a href='javascript:;'>famous</a></p>
</li>
</ul>
</div>
</div>
<div id='contain'>
</div>
</body>
</html>
$(function(){
$('.body_menu').click(function () {
let mouseSelect = $(this).next('div')
mouseSelect.toggleClass('secondList')
})
})
