基于Jquery代码实现手风琴菜单

先给大家展示效果图：

先看页面代码，列表的嵌套：

<div id="menuDiv">
<ul id="menu">


<li class="parentLi">



<span>B</span>



<ul class="childrenUl">




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>



</ul>


</li>


<li class="parentLi">



<span>B</span>



<ul class="childrenUl">




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>



</ul>


</li>


<li class="parentLi">



<span>B</span>



<ul class="childrenUl">




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>




<li class="childrenLi"><span>C</span></li>



</ul>


</li>

</ul>
</div>

　css 代码，主要设置背景色和子菜单左边框的样式，设置悬浮和选中的样式，开始设置子菜单不显示（通过 js 设置点击之后再显示）：

#menuDiv{
  width: 200px;
  background-color: #029FD4;
}
.parentLi
{
  width: 100%;
  line-height: 40px;
  margin-top: 1px;
  background: #1C73BA;
  color: #fff;
  cursor: pointer;
  font-weight:bolder;
}
.parentLi span
{
  padding: 10px;
}
.parentLi:hover, .selectedParentMenu
{
  background: #0033CC;
}
.childrenUl
{
  background-color: #ffffff;
  display: none;
}
.childrenLi
{
  width: 100%;
  line-height: 30px;
  font-size: .9em;
  margin-top: 1px;
  background: #63B8FF;
  color: #000000;
  padding-left: 15px;
  cursor: pointer;
}
.childrenLi:hover, .selectedChildrenMenu
{
  border-left: 5px #0033CC solid;
  background: #0099CC;
  padding-left: 15px;
}

接下来就是点击事件的代码：

$(".parentLi").click(function(event) {
    $(this).children('.childrenUl').slideToggle();
  });
  $(".childrenLi").click(function(event) {
    event.stopPropagation();
    $(".childrenLi").removeClass('selectedChildrenMenu');
    $(".parentLi").removeClass('selectedParentMenu');
    $(this).parents(".parentLi").addClass('selectedParentMenu');
    $(this).addClass('selectedChildrenMenu');
  });

需要注意的是列表嵌套，会导致事件冒泡，所以在子菜单的点击事件里面要组织冒泡，event.stopPropagation();

以上代码很简单，代码就是注释，jquery手风琴菜单就实现了。需要的朋友快来参考下吧。