jQuery实现手风琴效果

1.创建测试页面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>手风琴效果</title>
    <script src="js/jquery-3.4.1.js"></script>
    <style>
        ul,li,h4{
            margin: 0;
            padding: 0;
        }

        .left{
            width: 160px;
            height: auto;
            float: left;
            
        }
       ul.menu{
           width: 100%;
            float: left;
            
            
        }

        ul.menu>li{
            list-style: none;
            position: relative;
            background:#E4644B; 
            text-align: center;
            line-height: 22px;
            border-bottom: solid 1px #DED;
        }
        ul.menu>li:last-child{
            border-bottom: none;
            }

        ul.menu>li ul li{
            padding: 5px 0;
        }
        .right{
            width: 500px;
            background-color: rgb(250, 244, 244);
        }

          ul.menu>li span{
            position: absolute;
            top: 5px;
            right: 3px;
            font-size: 22px;            
            }

            ul.menu>li h4{
                padding:8px 0;
            }

            ul.menu>li .child_ul{
            background: #fff;
            display: none; 
            }

            .selected{
                background: rgb(184, 184, 184);
            }
    </style>

</head>
<body>
    <div class="wrapper">
        <div class="left">
            <ul class="menu">
                <li>
                    <h4>Java</h4>
                    <span>+</span>
                    <ul class="child_ul">
                        <li><a href="#">java se</a></li>
                        <li><a href="#">java se</a></li>
                        <li><a href="#">java se</a></li>
                    </ul>
                 </li>
                <li>
                    <h4>c#</h4>
                    <span>+</span>
                    <ul class="child_ul">
                        <li><a href="#"> winform</a></li>
                        <li><a href="#"> winform</a></li>
                        <li><a href="#"> winform</a></li>
                    </ul>
                </li>
            </ul>
        </div>
        <div id="right">

        </div>
    </div>

</body>
</html>

2.jquery实现手风琴效果

   
    <script>
 
        $(function(){
        $("ul.menu>li").on("click",function(){
        var next = $(this).children(".child_ul");
        var icon = $(this).children("span");
        next.slideToggle('fade');
        if(icon.html()==="+"){
          icon.html("-");
        }else{
          icon.html("+");
        }
        $('.child_ul').not(next).slideUp('fast');//不是当前点击的内容全部向上收起
        $('ul.menu>li').children("span").not(icon).html("+");
       
        //阻止第二层的事件向第一层冒泡:
        $("ul.menu>li > ul li").click(function(event){event.stopPropagation()});
        return false;
      })

     //添加当前链接样式
      $(".child_ul li").hover(function(){       
            $(".child_ul li").removeClass("selected");
            $(this).addClass("selected");
      })

        })
    </script>

3.运行效果

参考文章：

https://www.jb51.net/article/146499.htm

https://www.cnblogs.com/Fooo/p/9992409.html

来源：https://www.cnblogs.com/YorkZhangYang/p/12595862.html

标签

jquery