js realizes Jingdong's second-level menu effect (with delay function)

The example in this article describes how jquery can imitate the second-level menu effect of Jingdong. Share it with everyone for your reference. The details are as follows:
Here we introduce js code to imitate Jingdong level 2 menu effect, with delay function, making the operation more comfortable and natural.
Let’s take a look at the screenshots of the running effect:
The online demo address is as follows:
http://demo.jb51.net/js/2015/jquery-fjd-style-menu-codes/
The specific code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>仿京东网站的2级菜单导航</title>
<style type="text/css">
ul{margin:0;padding:0;list-style-type:none;}
a{ text-decoration:none;}
.mold_open_hover,.mold_open{background-image:url();background-repeat:none;display:inline-block;width:10px;height:6px;margin-left:10px;position:relative;top:-2px;}
.mold_open{background-position:0 -6px;}
.mold_open_hover{background-position:0 0;}
.mod-menu{position:relative;z-index:1000;left:-1px;margin-left:100px;}
h1{margin-left:100px;}
.menu-cont-list a:hover{text-decoration:underline;}
.mod-menu .menu-item{width:220px;border-top:solid 1px #d59bb2;border-bottom:solid 2px #d59bb2;position:relative;z-index:22;}
.mod-menu .menu-item li{height:47px;line-height:47px;background:#feebf3;border-top:solid 1px #f0bfd3;}
.mod-menu .menu-item li.mouse-bg{background:url() no-repeat #fff;position:relative;z-index:22;margin-right:-4px;}
.mod-menu .menu-item a{color:#c81d61;font-size:16px;padding-left:33px;display:block;height:45px;border-top:solid 1px #f1f2f7;}
.mod-menu .menu-item a:hover{ text-decoration:none;}
.mod-menu .menu-cont{position:absolute;left:220px;top:1px;background:#fff;width:573px;border:solid 1px #F0BFD3;box-shadow:2px 0 10px rgba(210,33,103,0.25);z-index:20;}
.mod-menu .menu-cont-list{padding:0 30px;}
.mod-menu .menu-cont-list li{border-bottom:dotted 1px #f0bfd3;padding:10px 0;}
.mod-menu .menu-cont-list li:last-child{border-bottom:none;}
.mod-menu .menu-cont-list h3{font-size:14px;font-weight:700;}
.mod-menu .menu-cont-list h3 a{color:#222;}
.mod-menu .menu-list-link a{color:#666;line-height:24px;}
.mod-menu .menu-list-link .long-string{color:#ccc;font-size:12px;padding:0 10px;}
</style>
<script src="jquery-1.6.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
 var l;
 var t;
 var menuItem;
 $(document).ready(menu_init);
 function menu_init()
 {
  var mod_menu=$(".mod-menu");//导航模块区
  menu();//执行展开二级菜单函
  //setTimeout(menu(),1000)
 }
 var menu=function()
 {
  menuItem=$(".menu-item li");//选择导航列表
  menuItem.each(menu_each);/*导航菜单菜单*/
  menuItem.mouseleave(menu1_leave);/*导航菜单菜单*/
  $(".mod-menu").mouseleave(menu2_mouse_leave);
 }//展开二级菜单 
 var menu_each=function()
 {
  var _index=$(this).index();//获取当前选择菜单列表的索引
  $(this).mouseenter(menu_mouse_enter);
 }
 var menu_mouse_enter=function()
 {
  l = $(this);//获取当前鼠标滑过的列表的顶部坐标
  t=setTimeout("menu_mouse_enter_show()", 300)
 }
 function menu_mouse_enter_show()
 {
//  alert(y1);
  var y = l.position().top+1;//获取当前鼠标滑过的列表的顶部坐标
  $(".menu-cont").show();
  $(".menu-cont").css("top",y);//需要显示的对应索引内容
  l.addClass("mouse-bg").siblings().removeClass("mouse-bg");
  $(".menu-cont>div").eq(_index).show().siblings().hide();
 }
 var menu1_leave=function()
 {
  clearTimeout(t);
 }
 var menu2_mouse_leave=function()
 {
  $(".menu-cont").hide();
  menuItem.removeClass("mouse-bg");
 }
</script>
</head>
<body>
 <h1>简单的2级菜单导航</h1>
 <div class="mod-menu f-l">
 <div id="column-left"> 
  <ul class="menu-item">
  <li class=""><a href="#">Wedding</a></li>
  <li class=""><a href="#">Women's Shoes</a></li>
  <li class=""><a href="#">Accessories</a></li>
  <li class=""><a href="#">Beauty & Health</a></li>
  </ul><!--一级菜单列表-->
  <div class="menu-cont hide" style="display: none; top: 241px;">
  <div class="menu-cont-list" style="display: none;">
  <ul>
   <li>
   <h3><a href="#">Wedding Dresses</a></h3>
   <div class="menu-list-link"></div>
   </li>
   <li>
   <h3><a href="#">Bridesmaid Dresses</a></h3>
   <div class="menu-list-link"></div>
   </li>
   <li>
   <h3><a href="#">Wedding Party Dresses</a></h3>
   <div class="menu-list-link">
   <a title="" href="#">Mother of the Brides Dresses</a>
   <span class="long-string">|</span>
   <a title="" href="#">Flower Girl Dresses</a>
   <span class="long-string">|</span>
   <a title="" href="#">Wedding Guest Dresses</a>
   </div>
   </li>
   <li>
   <h3><a href="#">Wedding Accessories</a></h3>
   <div class="menu-list-link">
    <a title="" #">Fabric Swatch</a>
    <span class="long-string">|</span>
    <a title="" href="#">Bridal Lingerie</a>
    <span class="long-string">|</span>
    <a title="" href="#">Wedding Flowers</a>
    <span class="long-string">|</span>
    <a title="" href="#">Wedding Petticoats</a>
   </div>
   </li>
   </ul>
  </div>
  <div class="menu-cont-list" style="display: none;">
   <ul>
   <li>
    <h3><a href="#">Prom Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Military Ball Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Evening Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Cocktail Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Ball Gowns</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Homecoming Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Little Black Dresses </a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Quinceanera Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   </ul>
  </div>
  <div class="menu-cont-list" style="display: none;">
   <ul>
   <li>
    <h3><a href="#">Dresses</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Clubwear</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Leggings</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Lingeries</a></h3>
    <div class="menu-list-link">
    <a title="" #">Bras</a>
    <span class="long-string">|</span>
    <a title="" href="#">Babydolls</a>
    <span class="long-string">|</span>
    <a title="" href="#">Panties</a>
    <span class="long-string">|</span>
    <a title="" href="#">Hosiery</a>
    </div>
   </li>
   <li>
    <h3><a href="#">Swimwear</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Activewear</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   </ul>
  </div>
  <div class="menu-cont-list" style="display: none;">
   <ul>
   <li>
    <h3><a href="#">Heels</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Pumps</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Boots</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   </ul>
  </div>
  <div class="menu-cont-list" style="display: none;">
   <ul>
   <li>
    <h3><a href="#">Evening Bags</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Hats & Scarves</a></h3>
    <div class="menu-list-link">
    <a title="" href="#">Womens Hats</a>
    <span class="long-string">|</span>
    <a title="" href="#">Womens Scarves</a>
    </div>
   </li>
   <li>
    <h3><a href="#">Jewelry</a></h3>
    <div class="menu-list-link">
    <a title="" href="#">Earrings</a>
    <span class="long-string">|</span>
    <a title="" href="#">Necklaces</a>
    <span class="long-string">|</span>
    <a title="" href="#">Rings</a>
    </div>
   </li>
   <li>
    <h3><a href="#">Watches</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   </ul>
  </div>
  <div class="menu-cont-list" style="display: block;">
   <ul>
   <li>
    <h3><a href="#">Wigs & Hair extensions</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Fascinators</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Makeup Tools</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Spas & Massagers</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   <li>
    <h3><a href="#">Health & Fitness</a></h3>
    <div class="menu-list-link">
    </div>
   </li>
   </ul>
  </div>
  </div>
 </div><!--二级菜单内容-->
 </div>
若提示有错误，请刷新网页
</body>
</html>
Copy after login
I hope this article will be helpful to everyone’s jquery programming design.
js realizes Jingdong's second-level menu effect (with delay function)_jquery
