模态框拖动-优快云博客

本文链接：https://blog.youkuaiyun.com/m0_71251536/article/details/125322034
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }

        a {
            display: block;
            text-align: center;
            font-size: 30px;
            color: #333;
            text-decoration: none;

        }

        .login {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 400px;
            height: 250px;
            background-color: #fff;
        }

        .login .closebtn {
            position: absolute;
            top: -15px;
            right: -15px;
            width: 40px;
            height: 40px;
            text-align: center;
            line-height: 40px;
            font-size: 10px;
            background-color: #fff;
            border-radius: 50%;
            cursor: pointer;
        }

        .login .title {
            padding: 20px 0;
            text-align: center;
            cursor: move;
        }

        .username,
        .userpassword {
            margin: 20px 0;
        }

        .user span {
            display: inline-block;
            width: 80px;

            text-align: right;
        }

        .user input {
            width: 280px;
            height: 30px;
            border: 1px solid #333;
        }

        .buttom {
            margin: 20px auto;
            width: 150px;
            height: 30px;
            border: 1px solid #333;
            text-align: center;
            line-height: 30px;
            cursor: pointer;
        }

        .mask {
            display: none;
            position: absolute;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgb(183, 179, 179);
            z-index: -1;
        }
    </style>
</head>

<body>
    <a href="javascript:;">点击即弹出登录框</a>
    <div class="login">
        <div class="closebtn">关闭</div>
        <div class="title">会员登录</div>
        <div class="user">
            <div class="username">
                <span>用户名：</span><input type="text" placeholder="请输入用户名">
            </div>
            <div class="userpassword">
                <span>登录密码：</span><input type="password" placeholder="请输入登录密码">
            </div>
        </div>
        <div class="buttom">登录</div>
    </div>
    <div class="mask"></div>

    <script>
        var a = document.querySelector('a');
        var login = document.querySelector('.login');
        var mask = document.querySelector('.mask');
        var title = document.querySelector('.title');
        a.addEventListener('click', function () {
            login.style.display = 'block';
            mask.style.display = 'block';
        })
        title.addEventListener('mousedown', function (e) {
            var x = e.pageX - login.offsetLeft;
            var y = e.pageY - login.offsetTop;
            document.addEventListener('mousemove', move)
            function move(e) {
                login.style.left = e.pageX - x + 'px';
                login.style.top = e.pageY - y + 'px';
            }
            title.addEventListener('mouseup', function () {
                document.removeEventListener('mousemove', move)
            })
        })

    </script>
</body>

</html>