完成登录与注册页面的前端 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>欢迎来到登录界面，请登录</title>
 
    <script type="text/javascript" src="sdda.js"></script>
    <link rel="stylesheet" href="sdf.css">
</head>
<body>
<p id="meto">中国标准时间</p>
<script>document.getElementById("meto").innerHTML = Date()</script>
<div id="container" style="width: 300px" align="center">
    <div id="header" style="background-color: yellow"><h2 align="center">登陆界面</h2></div>
    <div id="content" style="background-color: aqua">
 
            <p align="center">用户名：<input id="uname" type="text" name="user" placeholder="请输入账号">
 
            </p>
            <p align="center"> 密码&nbsp：<input id="upass" type="password" name="psw" placeholder="请输入密码"></p>
            <br>
            <div id="error_box"><br>
            </div>
            <input type="radio" value="stu">用户
            <input type="radio" value="tea">会员
            <br>
 
            <input type="checkbox" value="true">记住密码 <a href="">登陆遇到问题</a><br>
            <button onclick="fnLogin()">登陆</button>
            &nbsp&nbsp&nbsp
            <input type="button" name="regist" value="注册">
    </div>
    <div id="footer" style="background-color: crimson"><h3 align="center">版权@hir</h3></div>
</div>
</body>
</html>
 1 function fnLogin() {
 2          var oUname = document.getElementById("uname");
 3          var oError = document.getElementById("error-box");
 4          var oUpass = document.getElementById("upass");
 5          var oUpass = document.getElementById("upass1")
 6          var isoError = true;
 7          oError.innerHTML = "<br>";
 8  
 9          if (oUname.value.length<6||oUname.value.length>20){
10               oError.innerHTML="用户名要6-20位";
11               isoError = false;
12               return;
13                 }
14                 else if(oUname.value.charCodeAt(0)>=48&&(oUname.value.charCodeAt(0)<=57)){
15              oError.innerHTML = "用户名首字母必须是字母";
16              return;
17          } else for(var i=0;i<oUname.value.length;i++){
18                 if((oUname.value.charCodeAt(i)<48||oUname.value.charCodeAt(i)>57)&&(oUname.value.charCodeAt(i)<97||oUname.value.charCodeAt(i)>122)){
19                     oError.innerHTML = "用户名必须为字母或数字";
20                     return;
21                 }
22          }
23  
24  
25           if (oUpass.value.length<6||oUpass.value.length>20){
26                     oError.innerHTML="密码至少6-20位";
27                      isoError = false;
28                       return;
29  
30             }
31               window.alert("注册成功")
32         }




 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>注册</title>
 6     <script src="zhuce.js"></script>
 7 </head>
 8 <body>
 9 <div class="box">
10     <h1>注册</h1>
11     <div class="input-box">
12         账号：<input id="uname" type="text" placeholder="请输入用户名">
13     </div>
14     <div class="input-box">
15         密码：<input id="upass" type="password" placeholder="请输入密码">
16     </div>
17     <div class="input-box">
18         密码：<input id="upass1" type="password" placeholder="请再次输入密码">
19     </div>
20     <div id="error-box"><br></div>
21     <div class="input-box">
22         <button onclick="fnLogin()">确认注册</button>
23     </div>
24 </div>
25 </body>
26 </html>




function fnLogin() {
    var oUname = document.getElementById("uname")
    var oUpass = document.getElementById("upass")
    var oError = document.getElementById("error_box")
 
    oError.innerHTML = "<br>"
    if (oUname.value.length > 20 || oUname.value.length < 6) {
        oError.innerHTML = "用户名为6-20位字符";
        return;
    } else if(oUname.value.charCodeAt(0)>=48 && oUname.value.charCodeAt(0)<=57){
      oError.innerHTML="first letter";
      return;
    }else for(var i=0;i<oUname.value.length; i++){
    if((oUname.value.charCodeAt(i)<48 || oUname.value.charCodeAt(i)>57) && (oUname.value.charCodeAt(i)<97 || oUname.value.charCodeAt(i)>122))
      oError.innerHTML="only letter or number";
      return;
}
    if (oUpass.value.length > 20 || oUpass.value.length < 6) {
        oError.innerHTML = "密码为 6-20位字符";
        return;
    }
    window.alert("登陆成功")
}






 






 


 




 







		

		
posted @ 
2017-11-01 21:31 
017廖佳辉 
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