javascript 左侧菜单

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .hide{
            display: none;
        }
        .item .header{
            height: 35px;
            background-color: #2459a2;
            color: white;
            line-height: 35px; /*放置垂直*/

        }
    </style>
</head>
<body>
    <div style="height: 48px"></div>

    <div style=" 300px">
        <div class="item">
            <div id='i1' class="header" onclick="ChangeMenu('i1')">菜单一</div>
            <div class="content">
                <div>内容1</div>
                <div>内容1</div>
                <div>内容1</div>
            </div>
        </div>
        <div class="item">
            <div id = 'i2' class="header" onclick="ChangeMenu('i2')">菜单二</div>
            <div class="content">
                <div>内容2</div>
                <div>内容2</div>
                <div>内容2</div>
            </div>
        </div>
        <div class="item">
            <div id = 'i3' class="header" onclick="ChangeMenu('i3')">菜单三</div>
            <div class="content">
                <div>内容3</div>
                <div>内容3</div>
                <div>内容3</div>
            </div>
        </div>

    </div>

    <!--修改菜单功能-->
    <script>
        function ChangeMenu(mid) {
            var current_header = document.getElementById(mid); //当前头部
            console.log(current_header);
            var current_base_header = current_header.parentElement.parentElement
            console.log(current_base_header);
            var current_list = current_base_header.children;
            for(var i=0;i<current_list.length;i++){
                var current_item = current_list[i];
                current_item.children[1].classList.add("hide");
            }
            current_header.nextElementSibling.classList.remove('hide')
        }
    </script>
</body>
</html>

相关阅读:
管线命令
CentOS7搭建本地YUM仓库，并定期同步阿里云源
linux日志分割脚本
Centos 7 命令整理
python实现变脸动画测试
python打印杨辉三角
python打印乘法口诀，敏感字替换
python食人蛇代码
用python写的考勤自动打卡程序
tomcat发版脚本

原文地址：https://www.cnblogs.com/Liang-jc/p/9032087.html