登录和注册（Js）的写法

今天在做小组项目的时候发现登录和注册的使用不是很熟，记录下来：
<script>

//弹出框中的css部分

input { font-family: Arial, sans-serif;}

.login { width: 270px; margin: 0 auto; padding: 30px 40px; background-color: #f7f7f7;}

.login ul { list-style-type: none;}

.login li { padding: 10px 0; overflow: hidden;}

.login .li3, .login .li5 { text-align: right; font-size: 12px;}

.login .li3 input { width: 13px; height: 13px; margin: 0 3px 0 10px; vertical-align: middle;}

.login .submit { display: block; width: 100%; padding: 6px 0; border: 0 none; color: #fff; background-color: #4d90fe; cursor: pointer;}

#email, #password { width: 214px; padding: 5px; border: 1px solid #ccc;}

.forgot { color: #333;}

//遮罩层css部分

#mask {

                background: #000000;

                opacity: 0.75;

                /*IE不认这个属性*/

                filter: alpha(opacity=75);

                /*这个是为了保证IE兼容*/

                height: 800px;

                width: 100%;

                position: absolute;

                z-index: 999;

                left: 0;

                top: 0;

            }

#login {

                position: fixed;

                /*静止定位*/

                /*left: 30%;

                top: 30%;*/

                z-index: 1000;

            }

            .loginCon {

                width:350px;

                height: 270px;

            }

//弹出框中的关闭部分    #close {

                width: 20px;

                height: 20px;

                position: absolute;

                right: 10px;

                top: 10px;

                cursor: pointer;

                /*border:1px solid red;*/

                font-size:24px;

                font-weight:400

            }

</style>

<body>

    <div id="zd">

        <div class="zd1"  onclick="openNew()" >登录</div>

        <div class="zd1"  onclick="show()" >注册</div>

    </div>

</body>

<script type="text/javascript">

    function openNew() {

       //                获取页面高度和宽度

        var sHeight = document.documentElement.scrollHeight;

        var sWidth = document.documentElement.scrollWidth;

        //                alert(sHeight);

        //                alert(sWidth);

        //                可视区域的高度和宽度

        var wHeight = document.documentElement.clientHeight;

        var wWidth = document.documentElement.clientWidth;

        //                alert(sHeight);

        //                alert(sWidth);

        var oMask = document.createElement("div");

        oMask.id = "mask";

        oMask.style.height = sHeight + "px";

        oMask.style.width = sWidth + "px";

        document.body.appendChild(oMask);

        var oLogin = document.createElement("div");

        oLogin.id = "login";

        oLogin.innerHTML = '<div class="loginCon"><div class="loginCon"><div class="login"><ul><li><span><label for="email">邮箱：</label></span><input id="email" type="text"></li><li><span><label for="password">密码：</label></span><input id="password" type="password"></li><li class="li3"><input type="checkbox" id="remember"><label for="remember">记住密码</label> <input type="checkbox" id="togglePassword"><label for="togglePassword">显示密码</label></li><li class="li4"><input class="submit" type="submit" value="登录"></li></ul></div></div><div id="close">×</div></div>';

        document.body.appendChild(oLogin);

        var dHeight = oLogin.offsetHeight;

        var dWidth = oLogin.offsetWidth;

        oLogin.style.top = (wHeight - dHeight) / 2 + "px";

        oLogin.style.left = (wWidth - dWidth) / 2 + "px";

        var oClose = document.getElementById("close")

        oClose.onclick = function() {

            document.body.removeChild(oMask);

            document.body.removeChild(oLogin);

        }

        oMask.onclick = function() {

            document.body.removeChild(oMask);

            document.body.removeChild(oLogin);

        }

    }

function show()

{

        //                获取页面高度和宽度

        var sHeight = document.documentElement.scrollHeight;

        var sWidth = document.documentElement.scrollWidth;

        //                alert(sHeight);

        //                alert(sWidth);

        //                可视区域的高度和宽度

        var wHeight = document.documentElement.clientHeight;

        var wWidth = document.documentElement.clientWidth;

        //                alert(sHeight);

        //                alert(sWidth);

        var oMask = document.createElement("div");

        oMask.id = "mask";

        oMask.style.height = sHeight + "px";

        oMask.style.width = sWidth + "px";

        document.body.appendChild(oMask);

        var oLogin = document.createElement("div");

        oLogin.id = "login";

        oLogin.innerHTML = '<div class="loginCon"><div class="loginCon"><div class="login"><ul><li><span><label for="zhanghao">账号：&nbsp;&nbsp;&nbsp;</label></span><input id="zhanghao " type="text" style="height:23px"></li><li><span><label for="yonghuming">用户名：</label></span><input id="yonghuming" type="text" style="height:23px"></li> <li><span><label for="password">密码：</label></span><input id="password" type="password"></li><li><span><label for="password">确认密码：</label></span><input id="password" type="password"></li><li class="li4"><input class="submit" type="submit" value="提交"></li></ul></div></div><div id="close">×<div></div>'; 

        document.body.appendChild(oLogin);

        var dHeight = oLogin.offsetHeight;

        var dWidth = oLogin.offsetWidth;

        oLogin.style.top = (wHeight - dHeight) / 2 + "px";

        oLogin.style.left = (wWidth - dWidth) / 2 + "px";

        document.getElementById("close").onclick = function() {

            document.body.removeChild(oMask);

            document.body.removeChild(oLogin);

        }

        document.getElementById("login").onclick = function() {

            document.body.removeChild(oMask);

            document.body.removeChild(oLogin);

        }

}

</script>
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登录和注册（Js）的写法

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