label+input实现按钮开关切换效果

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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .ipt {
            display: none;
        }
        .box {
             74px;
            height: 30px;
            line-height: 30px;
            overflow: hidden;
            border: 1px solid #eee;
            border-radius: 4px;
            position: relative;
            cursor: pointer;
        }
       label {display:inline-block;}
        .ipt:checked + .box .switch-btn {
            left: 0;
        }
        .switch-btn {
            position: absolute;
            left: -37px;
            top: 0;
             111px;
            height: 30px;
            transition: all 0.5s;
        }
        .switch-btn span{
             37px;
            height: 30px;
            display: block;
            text-align: center;            
            float: left;
            font-size: 14px;
        }
        .on {
            background: #52B13C;
            color: white;
        }
        .white {
            background: white;
        }
        .off {
            background: #EEEEEE;
        }
    </style>
</head>
<body>
    <p>主要使用label+input来实现改变left的值,下面是核心代码，意思就是<code>选中的input的兄弟节点.box下的.switch-btn元素的left会变成0px(原来是-37px);</code></p>
    <pre>
        .ipt:checked + .box .switch-btn {
            left: 0;
        }
    </pre>
    <p>当然要配合transition来实现</p>
    <p>下面是效果</p>
    <div class="wrap">
        <label>
            <input class="ipt" type="checkbox" name="" value="">
            <div class="box">
                <div class="switch-btn">
                    <span class="on">ON</span>
                    <span class="white"></span>
                    <span class="off">OFF</span>
                </div>
            </div>
        </label>
    </div>
    <p>全部css代码</p>
    <pre>
            .ipt {
                display: none;
            }
            .box {
                 74px;
                height: 30px;
                line-height: 30px;
                overflow: hidden;
                border: 1px solid #eee;
                border-radius: 4px;
                position: relative;
                cursor: pointer;
            }
            .ipt:checked + .box .switch-btn {
                left: 0;
            }
            .switch-btn {
                position: absolute;
                left: -37px;
                top: 0;
                 111px;
                height: 30px;
                transition: all 0.5s;
            }
            .switch-btn span{
                 37px;
                height: 30px;
                display: block;
                text-align: center;            
                float: left;
                font-size: 14px;
            }
            .on {
                background: #52B13C;
                color: white;
            }
            .white {
                background: white;
            }
            .off {
                background: #EEEEEE;
            }
    </pre>
</body>
</html>