lovecoding
/
W0407


			
				
					
						
						
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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;
            box-sizing: border-box;
        }

        #container {
            width: 482px;
            margin: 200px auto;
            border: 1px solid #000;
        }

        #container #list {
            overflow: hidden;
        }

        #container #list li {
            width: 120px;
            height: 50px;
            text-align: center;
            line-height: 50px;
            border: 1px solid #ccc;
            float: left;
        }

        .active {
            width: 480px;
            height: 300px;
            text-align: center;
            line-height: 300px;
            border: 1px solid #000;
            display: none;
        }

        .choose {
            display: block;
        }

        .selected {
            color: #ff0;
            background: #f00;
        }
    </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</li>
        </ul>
        <div id="main">
            <div class="active choose">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</div>
        </div>
    </div>
    <script>
        var btn = document.querySelectorAll("#list li");
        var contain = document.querySelectorAll(".active");
        console.log(contain)
        // console.log(this)
        for (var i = 0; i < btn.length; i++) {
            // console.log(this,'for')
            // console.log(i)
            // console.log(btn[i])
            btn[i].index = i;
            btn[i].onclick = function () {
                for(j=0;j<contain.length;j++) {
                    btn[j].className = '';
                    contain[j].className = 'active';
                }
                // console.log(i)
                // console.log(this.index)
                this.className = 'selected';
                contain[this.index].className = 'active choose';
            }
            
        }
        // onmousemove onmouseout
    </script>
</body>

</html>