JS Web API 拖拽對話框案例

時間 2019-12-11

原文原文鏈接

    <style>
        .login-header {
            width: 100%;
            text-align: right;
            height: 30px;
            font-size: 24px;
            line-height: 30px;
            margin-left: -100px;
        }
        ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a {
            padding: 0px;
            margin: 0px;
        }
        .login {
            width: 512px;
            position: absolute;
            border: #ebebeb solid 1px;
            height: 280px;
            left: 50%;
            right: 50%;
            background: #ffffff;
            box-shadow: 0px 0px 20px #ddd;
            z-index: 9999;
            margin-left: -256px;
            margin-top: 140px;
            display: none;
        }
        .login-title {
            width: 100%;
            margin: 10px 0px 0px 0px;
            text-align: center;
            line-height: 40px;
            height: 40px;
            font-size: 18px;
            position: relative;
            cursor: move;
            -moz-user-select:none;/*火狐*/
            -webkit-user-select:none;/*webkit瀏覽器*/
            -ms-user-select:none;/*IE10*/
            -khtml-user-select:none;/*早期瀏覽器*/
            user-select:none;
        }
        .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 {
            width: 100%;
            height: 100%;
            position: fixed;
            top: 0px;
            left: 0px;
            background: #000000;
            filter: alpha(opacity=30);
            -moz-opacity: 0.3;
            -khtml-opacity: 0.3;
            opacity: 0.3;
            display: none;
        }
        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>
    <script src="common.js"></script>
</head>
<body>
<div class="login-header"><a id="link" href="javascript:void(0);">會員登陸</a></div>
<div id="login" class="login" >
    <div id="title" class="login-title">會員登陸
        <span><a id="closeBtn" href="javascript:void(0);" class="close-login">關閉</a></span>
    </div>
    <div class="login-input-content">
        <div class="login-input">
            <label>帳號：</label>
            <input type="text" placeholder="請輸入帳號" name="info[username]" id="username" class="list-input">
        </div>
        <div class="login-input">
            <label>密碼：</label>
            <input type="password" placeholder="請輸入密碼" 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">登陸</a></div>
</div>
<!-- 遮蓋層 -->
<div id="bg" class="login-bg" ></div>

<script>
    // 一、點擊超連接顯示遮擋層登陸框，在頁面任何位置均可以關閉登陸框
    //獲取link源事件
    var link=document.getElementById('link');
    //獲取登陸框
    var login=document.getElementById('login');
    var bg=document.getElementById('bg');
    var closeBtn=document.getElementById('closeBtn');
    //link綁定鼠標點擊事件
    link.onclick=function (e) {
        //設置login登陸框的顯示樣式-----元素（樣式）屬性值：對象名.style.屬性名=「屬性值」
        login.style.display='block';
        //設置遮擋層背景顯示
        bg.style.display='block';
        console.log('出來 了')
        e.stopPropagation();
    }
    //頁面任何位置均可以關閉登陸框
    closeBtn.onclick=function () {
        login.style.display='none';
        console.log("隱藏了")
        bg.style.display='none';
    }
    //按下鼠標，移動鼠標，移動登陸框
    var title=document.getElementById('title');
    title.onmousedown=function (e) {
        //鼠標在盒子中的X橫座標=獲取此時可視區域的橫座標-此時登陸框距離左側頁面的橫座標
        var spaceX=e.clientX-login.offsetLeft;
        //鼠標在盒子中的Y縱座標=獲取此時可視區域的縱座標-此時登陸框距離左側頁面的縱座標
        var spaceY=e.clientY-login.offsetTop;
        //移動的事件
        document.onmousemove=function (e) {
            //盒子的橫座標X=新的可視區域的橫座標-spaceX   ====>新的值----> 給登陸框的left屬性，
            var leftX=e.clientX - spaceX+250;
            //盒子的縱座標Y=新的可視區域的縱座標-spaceY  ====>新的值----> 設置登陸框的left屬性，
            var topY=e.clientY - spaceY-140;
            login.style.left=leftX  +'px';
            login.style.top=topY +'px';
        }
        //事件移出
        title.onmouseup=function () {
            document.onmousemove=null;
        }
    }
</script>