拖动模态框

2024-02-21 22:46:46
<!DOCTYPE html>
<html>

<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .login-header {
            width: 100%;
            text-align: center;
            height: 30px;
            font-size: 24px;
            line-height: 30px;
        }

        ul,
        li,
        ol,
        dl,
        dt,
        dd,
        div,
        p,
        span,
        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        a {
            padding: 0px;
            margin: 0px;
        }

        .login {
            display: none;
            width: 512px;
            height: 280px;
            position: fixed;
            border: #ebebeb solid 1px;
            left: 50%;
            top: 50%;
            background: #ffffff;
            box-shadow: 0px 0px 20px #ddd;
            z-index: 9999;
            transform: translate(-50%, -50%);
        }

        .login-title {
            width: 100%;
            margin: 10px 0px 0px 0px;
            text-align: center;
            line-height: 40px;
            height: 40px;
            font-size: 18px;
            position: relative;
            cursor: move;
        }

        .login-input-content {
            margin-top: 20px;
        }

        .login-button {
            width: 50%;
            margin: 30px auto 0px auto;
            line-height: 40px;
            font-size: 14px;
            border: #ebebeb 1px solid;
            text-align: center;
        }

        .login-bg {
            display: none;
            width: 100%;
            height: 100%;
            position: fixed;
            top: 0px;
            left: 0px;
            background: rgba(0, 0, 0, .3);
        }

        a {
            text-decoration: none;
            color: #000000;
        }

        .login-button a {
            display: block;
        }

        .login-input input.list-input {
            float: left;
            line-height: 35px;
            height: 35px;
            width: 350px;
            border: #ebebeb 1px solid;
            text-indent: 5px;
        }

        .login-input {
            overflow: hidden;
            margin: 0px 0px 20px 0px;
        }

        .login-input label {
            float: left;
            width: 90px;
            padding-right: 10px;
            text-align: right;
            line-height: 35px;
            height: 35px;
            font-size: 14px;
        }

        .login-title span {
            position: absolute;
            font-size: 12px;
            right: -20px;
            top: -30px;
            background: #ffffff;
            border: #ebebeb solid 1px;
            width: 40px;
            height: 40px;
            border-radius: 20px;
        }
    </style>
</head>

<body>
<div class="login-header"><a id="link" href="javascript:;">点击，弹出登录框</a></div>
<div id="login" class="login">
    <div id="title" class="login-title">登录会员
        <span><a id="closeBtn" href="javascript:void(0);" class="close-login">关闭</a></span>
    </div>
    <div class="login-input-content">
        <div class="login-input">
            <label>用户名：</label>
            <input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
        </div>
        <div class="login-input">
            <label>登录密码：</label>
            <input type="password" placeholder="请输入登录密码" name="info[password]" id="password" class="list-input">
        </div>
    </div>
    <div id="loginBtn" class="login-button"><a href="javascript:void(0);" id="login-button-submit">登录会员</a></div>
</div>
<!-- 遮盖层 -->
<div id="bg" class="login-bg"></div>
<script>
    var link = document.getElementById('link');//打开按钮
    var close = document.querySelector('.close-login');//关闭按钮
    var box = document.querySelector('#login');//登录大盒子
    var mask = document.querySelector('#bg');//遮罩盒子
    var title = document.querySelector('#title');//盒子的title部分

    // 给按钮添加点击事件
    link.addEventListener('click',function () {
        box.style.display = 'block';
        mask.style.display = 'block';
    });

    //2 关闭按钮的点击事件
    close.addEventListener('click',function () {
        box.style.display = 'none';
        mask.style.display = 'none';
    });

    //3 当我们按下鼠标  求出鼠标在盒子内的坐标
    title.addEventListener('mousedown',function (e) {
        var x = e.pageX - box.offsetLeft;
        var y = e.pageY - box.offsetTop;

        //鼠标移动的时候：鼠标到文档的距离 - 鼠标到盒子的距离 = 盒子到文档的距离
        document.addEventListener('mousemove',move);
        function move(e){
            box.style.left = e.pageX - x + 'px';
            box.style.top = e.pageY - y + 'px';
        }
        //鼠标松开 移出事件
        document.addEventListener('mouseup',function () {
           document.removeEventListener('mousemove',move);
        });
    })
</script>
</body>
</html>
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