代码改变世界

完成登录与注册页面的前端

2017-11-01 18:51  019王泽  阅读(274)  评论(0)    收藏  举报 




完成登录与注册页面的HTML+CSS+JS，其中的输入项检查包括：


用户名6-12位


首字母不能是数字


只能包含字母和数字


密码6-12位


注册页两次密码是否一致


 




<!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>





　　




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")
}





　　




<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册</title>
    <script src="zhuce.js"></script>
</head>
<body>
<div class="box">
    <h1>注册</h1>
    <div class="input-box">
        账号：<input id="uname" type="text" placeholder="请输入用户名">
    </div>
    <div class="input-box">
        密码：<input id="upass" type="password" placeholder="请输入密码">
    </div>
    <div class="input-box">
        密码：<input id="upass1" type="password" placeholder="请再次输入密码">
    </div>
    <div id="error-box"><br></div>
    <div class="input-box">
        <button onclick="fnLogin()">确认注册</button>
    </div>
</div>
</body>
</html>





　　




function fnLogin() {
         var oUname = document.getElementById("uname");
         var oError = document.getElementById("error-box");
         var oUpass = document.getElementById("upass");
         var oUpass = document.getElementById("upass1")
         var isoError = true;
         oError.innerHTML = "<br>";

         if (oUname.value.length<6||oUname.value.length>20){
              oError.innerHTML="用户名要6-20位";
              isoError = false;
              return;
                }
                else if(oUname.value.charCodeAt(0)>=48&&(oUname.value.charCodeAt(0)<=57)){
             oError.innerHTML = "用户名首字母必须是字母";
             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 = "用户名必须为字母或数字";
                    return;
                }
         }


          if (oUpass.value.length<6||oUpass.value.length>20){
                    oError.innerHTML="密码至少6-20位";
                     isoError = false;
                      return;

            }
              window.alert("注册成功")
        }