html5实现弹出提示框，并且伴随遮罩层并且可以关闭弹出框

时间：2022-11-22 15:24:22
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/jquery-1.8.3.min.js"></script>
    <style>
        *{padding: 0; margin: 0}
        .box{
            position: fixed;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.2);
            display: none;
        }
        .box1{
            width: <a href="https://www.baidu.com/s?wd=500px&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dBPWbsuy7Bn1-WmvmYnWbY0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1Rznjf4n1mvnWn3njDYnjfsPf" target="_blank" class="baidu-highlight">500px</a>;
            height: <a href="https://www.baidu.com/s?wd=500px&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dBPWbsuy7Bn1-WmvmYnWbY0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1Rznjf4n1mvnWn3njDYnjfsPf" target="_blank" class="baidu-highlight">500px</a>;
            position: fixed;left: 50%; top: 25%;
            <a href="https://www.baidu.com/s?wd=margin-left&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dBPWbsuy7Bn1-WmvmYnWbY0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1Rznjf4n1mvnWn3njDYnjfsPf" target="_blank" class="baidu-highlight">margin-left</a>: -250px;
            border: 1px solid #000000;
        }
    </style>
    <script>

    </script>
</head>
<body>
    <div class="box">
        <div class="box1">
            <a href="javascript:;" onclick="jQuery('.box').hide()" class="close">关闭</a>
        </div>
    </div>
    <a href="javascript:;" onclick="jQuery('.box').show()" class="show">显示</a>
</body>
</html>



完全可以去掉href，这里只是个示例，完全可以用button代替，看自己的习惯，我这里用的是a标签
如何没有居中的话 可以吧fixed换成auto尝试一下

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