简单学生选课系统之登录界面

图片

简单学生选课系统之登录界面

代码：

checkcode.jsp

var code ; //在全局定义验证码   
//产生验证码  
function createCode(){
     code = "";   
     var codeLength = 4;//验证码的长度 
     var checkCode = document.getElementById("checkCode");
     var random = new Array(0,1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R',  
     'S','T','U','V','W','X','Y','Z');//随机数  
     for(var i = 0; i < codeLength; i++) {//循环操作  
        var index = Math.floor(Math.random()*36);//取得随机数的索引（0~35）  
        code += random[index];//根据索引取得随机数加到code上  
        //把code值赋给验证码  
        if (checkCode) {
            checkCode.className = "code";
            checkCode.value = code;
            checkCode.blur();
        }
    } 
}
     function validate(){
        var inputCode = document.getElementById("test").value;
        if (inputCode.length <= 0) {
            alert("请输入验证码！");
            return false;
        } else if (inputCode.toUpperCase() != code) {
            alert("验证码输入错误！");
            createCode();// 刷新验证码
            return false;
        }
        register.submit();    
     }

test.js

function check(register){
var no=register.studentno.value;
var pass=register.password.value;
var tests=register.test.value;
if(no==""){
alert("学号不能为空！");
register.studentno.focus();
register.studentno.select();
}
else if(pass==""){
alert("密码不能为空！");
register.password.focus();
register.password.select();
}
else if(tests==""){
alert("验证码不能为空！");
register.test.focus();
register.test.select();
}
else if(type==""){
alert("类型不能为空！");
}
return true;
}

date.js

var time,year,month,day,hour,minute,second;
  var today=new Date();
  month=today.getMonth()+1;
  day=today.getDay();
  var s=today.getFullYear()+"年"+month+"月"+today.getDate()+"日"+today.getHours()+"时"+today.getMinutes()+"分"+today.getSeconds()+"秒"+"\t";
  document.write(s);
   switch(day){
    case 1:document.write("星期一");break;
case 2:document.write("星期二");break;
case 3:document.write("星期三");break;
case 4:document.write("星期四");break;
case 5:document.write("星期五");break;
case 6:document.write("星期六");break;
case 7:document.write("星期日");break;
  }

firstpage.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>学生选课系统</title>
<style type="text/css">
body{margin:0}
.whole{
      width:1520px;
      height:800px;
      background:url(timg.jpg);

}
.head{
     height:300px;
     width:1520px;
}
.lhead{
     float:right;
}
.main{
     width:1520px;
     height:500px;
}
</style>
<script type="text/javascript" src="checkcode.js"></script>
<script type="text/javascript" src="test.js"></script>
</head>
<body>
<div class="whole">
      <div class="head">
        <div class="lhead">
           <script type="text/javascript" src="date.js"></script>
  </div>
  <h style="font-size:60px;color:#ffff00"><marquee behavior="alternate";scrolldelay="10";>欢迎进入选课系统</marquee></h>
      </div>
      <div class="main">
      <center>
      <form action="dofirstpage.jsp" name="register" method="post" onClick="return check(this)">
  学 号：<input type="text" name="studentno" value=""><br>
  密 码：<input type="password" name="password" value=""><br>
  验证码：<input type="text" id="test" style="width:90px">
<input type="text" onClick="createCode();" readonly="readonly" id="checkCode" class="unchanged" style="width: 56px;cursor:pointer"  />
<br>
类 型：
<input type="radio" name="types" value="学生">学生
<input type="radio" name="types" value="管理员">管理员<br>
  <input type="submit"  value="登录" onClick="validate();">
<input type="reset" value="重置">
 </form>
      </center>
      </div>
</div>
</body>
</html>

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简单学生选课系统之登录界面

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