一个简单的静态邮箱登录界面

写在前面：

作业链接：https://edu.cnblogs.com/campus/xnsy/2020javaEE/homework/10742

已上传至github:https://github.com/Eleanoren/-/tree/master/website%20practice

效果

用户名是tom，密码是123，当输入错误时：

 账号密码为空：

 输入正确的账号密码时跳转：

 代码部分

首先是css，我随便写的，没有和原网页一致，差不多就好：

<style type="text/css">
        body {
            background: url(https://area.sinaapp.com/bingImg/) fixed;
            background-size: cover;
            background-attachment: fixed;
            background-repeat: repeat;
        }
        
        * {
            padding: 0;
            margin: 0;
        }
        
        .top {
            width: 1600px, 100%;
            height: 60px, 100%;
        }
        
        .all {
            border: 1px solid lightblue;
            width: 335px;
            height: 387px;
            position: absolute;
            top: 136px;
            right: 341px;
        }
        
        .all .first .login,
        .all .first .pas {
            width: 335px;
            height: 50px;
            text-align: center;
            line-height: 50px;
            display: block;
            float: left;
            background-color: rgb(255, 136, 0);
            font-family: "微软雅黑";
            color: white;
        }
        
        .all .second .number {
            width: 284px;
            height: 35px;
            margin-top: 33px;
            margin-left: 17px;
            background-color:rgb(243,243,243);
        }
        
        .all .second .password {
            width: 284px;
            height: 35px;
            margin-top: 33px;
            margin-left: 17px;
            background-color: rgb(243,243,243);
        }
        
        #ok {
            width: 284px;
            height: 40px;
            margin-top: 17px;
            margin-left: 17px;
            border: 0;
            background-color: cornflowerblue;
            font-size: larger;
            color: white;
            font-family: "微软雅黑";
        }

        #ok:hover{
            background-color: steelblue ;
        }
        
        .all .first {
            width: 335px;
            height: 52px;
        }
        
        .all .second {
            width: 335px;
            height: 290px;
            background-color:white;
        }
        
        .all .third {
            width: 222px;
            height: 45px;
            line-height: 45px;
            padding-left: 110px;
            background-color: white;
        }
        
        .all .second .bnext {
            width: 20px;
            height: 20px;
            margin-top: 10px;
            margin-left: 17px;
        }
        
        .all .second .tnext {
            display: block;
            width: 100px;
            height: 15px;
            margin-left: 45px;
            margin-top: -22px;
            font-size: small;
        }

        .all .third span {
            font-size: smaller;
            color:slategrey;
            font-family: "微软雅黑";
        }

        .all.second span{
            font-size: small;
            color: red;
            font-family: "微软雅黑";
        }
        form button:hover
        {
                 background:#CCC; 
        }

    </style>

然后是js部分：

function cmd()
        {
            var number=document.getElementsByName("number").values;
            var password=document.getElementsByName("password").values;
            if(number==""||password=="")
            {
                alert("用户名和密码不能为空");
                return false;
            }
            else if(number=="tom"&&password=="123")
            {
                window.open(mail.swpu.edu.cn);
                return true;
            }
            else
            {
                alert("账号密码错误");
                return false;
            }