js关闭二维码

<style>
        .box {
            width: 300px;
            height: 100px;
            margin: 100px auto;
            position: relative;
        }

        img {
            width: 100px;
            height: 100px;
        }

        i {
            display: inline-block;
            margin: 10px;
            position: absolute;
            top: -50px;
            left: -50px;
            border: 10px solid grey;
        }
    </style>

 <div class="box">
        <img src="images/p1.jpg">
        <i class="close-btn">x</i>
    </div>
    <script>
        //获取事件源
        var box = document.querySelector('.box');
        var closebtn = document.querySelector('i');
        //绑定事件,执行程序
        closebtn.onclick = function () {
            //当我点击时隐藏box
            box.style.display = 'none';
        }
    </script>