jquery实现垂直手风琴菜单

 
 
 


 

 

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body{
 padding:0;
 margin:0;
}
ul{
 list-style:none;
 width:276px;
}
li{
 cursor:pointer;
}
.container{
 margin:100px auto;
 font-size:16px;
 position:relative;
 padding:0;
}
.container >li{
 background-color: #e4644b;
 border-top: 1px solid #d05942;
 padding:0 0 0 40px;
 height:48px;
 color:#f7f1e3;
 box-sizing: border-box;
 position: relative;
}
.container > li:first-child {
 border-radius: 7px 7px 0 0;
 border-top: 0;
}
.container > li:last-child {
 border-radius:0 0 7px 7px;
}
.container >li .icon{
 width:20px;
 height:20px;
 float:left;
 left:10px;
 top:15px;
 position:absolute;
 display:block;
}
.container >li span{
 line-height:48px;
 display:block;
}
.submenu{
 display:block;
 box-sizing: border-box;
 color: #ae9f9f;
 font-size: 13px;
 content: " ";
}
.expand-triangle{
 background: url(../images/expand.gif) top left no-repeat;
 height: 10px;
 width: 276px;
 content: " ";
 margin-left: -40px;
}
.submenu li {
 line-height: 20px;
 height: 35px;
 padding-top: 11px;
 margin-left: -40px;
 background-color: #484141;
 border-left: solid 6px #484141;
 transition: border-left 220ms ease-in;
}
.submenu li span {
 margin-left: 30px;
}
.submenu .chosen,
.submenu .chosen:hover {
 border-left: solid 6px #96d145;
}
.submenu li:hover {
 border-left: solid 6px #d05942;
}​

$(document).ready( function() {
 var $submenu = $('.submenu');
 var $mainmenu = $('.container');
 $submenu.hide();
 $submenu.first().delay(400).slideDown(700);
 $submenu.on('click','li', function() {
 $submenu.siblings().find('li').removeClass('chosen');
 $(this).addClass('chosen');
 });
 $mainmenu.on('click', 'li', function() {
 $(this).next('.submenu').slideToggle().siblings('.submenu').slideUp();
 });
});