js之关不掉的弹出广告


<!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>
        div{
            width: 608px;
            height: 434px;
            border: 1px solid #000;
            position: relative;
            margin: 0 auto;
            margin-top: 150px;
            display: none;/*div隐藏*/
        }
        button{
            position: absolute;
            right: 0;
            top: 0;
        }
    </style>
</head>
<body>
    <div id="img"> 
        <button>X</button>
        <img src="./img/ta.jpg">
    </div>
    <img src="">
    <script>
        //获取元素
        var div = document.getElementById('img');
        var btn = document.getElementsByTagName('button')[0];
        //三秒之后 div显示即可
        setTimeout(function(){
            div.style.display = 'block';
        },3000)
        //点击叉号之后 关闭广告
        btn.onclick = function(){
            div.style.display = 'none';
            //三秒之后，再让div重出江湖
            setTimeout(function(){
                div.style.display = 'block';
            },3000);
        }
    </script>
</body>
</html>