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三级菜单的二级菜单时显示当前三级菜单

萝卜2018-11-15 08:05:28164
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>三级下拉菜单</title>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<style type="text/css">
*{margin: 0px;padding: 0px;}
.menu { width: 800px;height: 35px;margin: 0px auto;background: #000; margin-top: 20px;color: #fff; border:1px solid #ccc;border-radius: 5px; }
    ul{ list-style: none;}
    ul li {width: 100px;height: 35px;line-height: 35px;text-align: center;float: left;border-right: 1px solid #ccc;cursor: pointer;}
    .twobox li {width: 100px;height: 30px;line-height: 30px;background: #2D2D2D;color: #A9A9A9; font-size: 14px;position: relative;border:0px;}
    .twobox li:hover {background: #000;color: #fff;}
    .three {position: absolute; top: 0px;left: 100px;}
    .three li {width: 99px;height: 30px;line-height: 30px;border: 0;}
</style>
<script type="text/javascript">
$(document).ready(function(){
  //隐藏二级与三级下拉菜单
   $('.twobox').hide()
   $('.three').hide()

  //当鼠标移动到包含二级菜单的一级菜单时显示当前二级菜单
           $('.one>li').mouseover(function(){
           	$(this).find('.twobox').slideDown(500)
           })

  //当鼠标移出包含二级菜单的一级菜单时隐藏当前二级菜单
           $('.one>li').mouseleave(function(){
           	$(this).find('.twobox').slideUp(500)
            })

  //当鼠标移动到包含
            $('.two').mouseover(function(){
           	$(this).find('.three').slideDown(500)
           })

  //当鼠标移出包含三级菜单的二级菜单时隐藏当前三级菜单
  $('.two').mouseleave(function(){
           	$(this).find('.three').slideUp(500)
            })
  
})

</script>
</head>
<body>
  <div class="menu">
            <ul class="one"><!-- 一级下拉菜单 one -->
                <li>首 页</li>
                <li>产 品
                    <ul class="twobox"><!-- 二级下拉菜单 twobox-->
                        <li>产品1</li>
                        <li class="two">产品2
                            <ul class="three"><!--三级下拉菜单 three-->
                                <li>产品1.1</li>
                                <li>产品1.2</li>
                                <li>产品1.3</li>
                                <li>产品1.4</li>
                            </ul>   
                        </li>
                        <li class="two">产品3
                           <ul class="three">
                                <li>产品3.1</li>
                                <li>产品3.2</li>
                                <li>产品3.3</li>
                                <li>产品3.4</li>
                            </ul>  
                        </li>
                        <li>产品4</li>
                    </ul>
                </li>
                <li>公司新闻
                    <ul class="twobox">
                        <li>公司新闻1</li>
                        <li class="two">公司新闻2
                            <ul class="three">
                                <li>公司新闻1.1</li>
                                <li>公司新闻1.2</li>
                                <li>公司新闻1.3</li>
                            </ul>   
                        </li>
                        <li>公司新闻3</li>
                        <li>公司新闻4</li>
                    </ul>
                </li>
                <li>行业新闻</li>
                <li>联系我们</li>
            </ul>
        </div>
</body>
</html>


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