lovecoding
/
VIP32


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        list-style: none;
        text-decoration: none;
        box-sizing: border-box;
      }
      #container {
        width: 482px;
        margin: 190px auto;
        border: 1px solid #000;
      }
      #container #list {
        overflow: hidden;
      }
      #container #list li {
        float: left;
        width: 120px;
        height: 50px;
        text-align: center;
        line-height: 50px;
        border: 1px solid #ccc;
      }
      .active {
        width: 480px;
        height: 300px;
        text-align: center;
        line-height: 300px;
        font-size: 25px;
        color: purple;
        font-weight: 600;
        border: 1px solid #f00;
        display: none;
      }
      .selected {
        background: #f00;
        color: #ff0;
      }
      .choose {
        display: block;
      }
    </style>
  </head>
  <body>
    <div id="container">
      <ul id="list">
        <li class="selected">用户管理</li>
        <li>配置管理</li>
        <li>角色管理</li>
        <li>定时任务补</li>
      </ul>
      <div id="main">
        <div class="choose active">用户管理</div>
        <div class="active">配置管理</div>
        <div class="active">角色管理</div>
        <div class="active">定时任务补</div>
      </div>
    </div>
    <script>
        var btn = document.querySelectorAll("#list li");
        var contain = document.querySelectorAll(".active");
        console.log(this,'this1')
        for(var i=0;i<btn.length;i++) {
            // 为了给每一个按钮添加点击事件
            // 下标赋值
            btn[i].index = i;
            btn[i].onclick = function() {
                console.log(this,'this2')
                // 2.点击  恢复样式
                for(var j=0;j<contain.length;j++) {
                    // 4次
                    btn[j].className = '';
                    contain[j].className = 'active';
                }
                // this => 当前对象 =  btn[i]
                // 添加selected样式
                //  1.点击 改变颜色
                this.className = 'selected';
                // 添加choose样式
                contain[this.index].className = 'choose active';
            }
        }

    </script>
  </body>
</html>