完成登录与注册页面的前端
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
登录html
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>MIS问答平台</title> 6 <link rel="stylesheet" href="../static/css/dl.css"> 7 8 <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css"> 9 <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script> 10 <script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script> 11 <script src="../static/javascript/dl.js"></script> 12 13 14 </head> 15 <body class="body"> 16 17 <div id="dljm" class="panel panel-info"> 18 <h2 class="deng" class="panel-title">登陆</h2> 19 <div id="nr" class="panel-body"> 20 <form> 21 <div class="input_box"> 22 Username:<input type="text" id="username" placeholder="请输入用户名"> 23 </div> 24 <br> 25 <div class="input_box"> 26 Password: <input type="password" id="password" placeholder="请输入密码"> 27 </div> 28 <div class="error_box" id="error_box"><br></div> 29 <div class="bt"> 30 31 <button onclick="fnLogin()" >登录</button> 32 </div> 33 <br> 34 <input type="radio" name="role" value="stu">学生 35 <input type="radio" name="role" value="tea">教师<br> 36 <input type="checkbox" value="true"><span>记住我</span><br><a 37 href="http://www.gzcc.cn/html/yonghufenglei/xuesheng/">登陆遇到问题</a><br> 38 39 </form> 40 <p class="footer"><i>版权@mis15</i></p> 41 </div> 42 43 </div> 44 </body> 45 </html>
登录js
1 function fnLogin() { 2 var un = document.getElementById("username"); 3 var us = document.getElementById("password"); 4 var uE=document.getElementById("error_box") 5 6 uE.innerHTML="<br>" 7 if (un.value.length < 6 || un.value.length > 20) { 8 document.getElementById('error_box').innerHTML = "用户名必须在6-20个字符之间"; 9 return; 10 }else if((un.value.charCodeAt(0)>=48)&&(un.value.charCodeAt(0)<=57)){ 11 uE.innerHTML="用户名首字母不能为数字"; 12 return; 13 14 } 15 else for(var i=0;i<un.value.length;i++){ 16 if (((un.value.charCodeAt(i)<48)||(un.value.charCodeAt(i)>57))&&((un.value.charCodeAt(i)<97)||(un.value.charCodeAt(i)>122))){ 17 uE.innerHTML="用户名只能为数字或字母"; 18 return 19 20 } 21 22 } 23 if (us.value.length < 6 || us.value.length > 20) { 24 document.getElementById('error_box').innerHTML = "密码必须在6-20个字符之间"; 25 return false; 26 } 27 }
登录和注册的css
1 .deng { 2 text-align: center; 3 background-color: lightblue; 4 } 5 6 .dljm { 7 width: 400px; 8 align-content: center; 9 } 10 11 .footer { 12 background-color: lightblue; 13 text-align: center; 14 } 15 16 div { 17 margin-left: auto; 18 margin-right: auto; 19 width: 300px; 20 21 } 22 23 .error_box { 24 color: red; 25 } 26 27 button { 28 29 font-size: 15px; 30 text-align: center; 31 background-color: lightblue; 32 height: 30px; 33 width: 130px; 34 font-family: "Adobe 宋体 Std L"; 35 margin:0 auto;display:block; 36 }
注册html
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>MIS问答平台</title> 6 <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css"> 7 <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script> 8 <script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script> 9 <link rel="stylesheet" href="../static/css/dl.css"> 10 <script src="../static/javascript/zhuce.js"></script> 11 </head> 12 <body> 13 <div id="zcjm" class="panel panel-info"> 14 <h2 class="deng" class="panel-title">注册</h2> 15 <div id="nr2" class="panel-body"> 16 <form> 17 <div class="input_box"> 18 Username :<input type="text" id="username" placeholder="请输入你的用户名"> 19 </div> 20 <br> 21 <div class="input_box"> 22 Userphone:<input type="text" id="userphone" placeholder="请输入你的手机号"> 23 </div> 24 <br> 25 <div class="input_box"> 26 Password : <input type="password" id="password" placeholder="请输入密码"> 27 </div> 28 <br> 29 <div class="input_box"> 30 Password : <input type="password" id="password2" placeholder="请再次输入密码"> 31 </div> 32 33 <div class="error_box" id="error_box"><br></div> 34 <div class="bt"> 35 36 <button onclick="fnzhuce()">注册</button> 37 </div> 38 </form> 39 40 41 </div> 42 43 44 </div> 45 </body> 46 </html>
注册js
1 function fnzhuce() { 2 var un = document.getElementById("username"); 3 var us = document.getElementById("password"); 4 var uE = document.getElementById("error_box"); 5 var uP = document.getElementById("userphone"); 6 var us2 = document.getElementById("password2"); 7 8 uE.innerHTML = "<br>"; 9 if (un.value.length < 6 || un.value.length > 20) { 10 document.getElementById('error_box').innerHTML = "用户名必须在6-20个字符之间"; 11 return; 12 } else if ((un.value.charCodeAt(0) >= 48) && (un.value.charCodeAt(0) <= 57)) { 13 uE.innerHTML = "用户名首字母不能为数字"; 14 return; 15 16 } 17 else for (var i = 0; i < un.value.length; i++) { 18 if (((un.value.charCodeAt(i) < 48) || (un.value.charCodeAt(i) > 57)) && ((un.value.charCodeAt(i) < 97) || (un.value.charCodeAt(i) > 122))) { 19 uE.innerHTML = "用户名只能为数字或字母"; 20 return; 21 22 } 23 24 } 25 for (var i = 0; i <12; i++) { 26 if (((uP.value.charCodeAt(i) < 48) || (uP.value.charCodeAt(i) > 57)) || uP.value.length != 11) { 27 uE.innerHTML = "请输入正确手机号"; 28 return 29 } 30 } 31 32 if (us.value.length < 6 || us.value.length > 20) { 33 document.getElementById('error_box').innerHTML = "密码必须在6-20个字符之间"; 34 return ; 35 } 36 if (us2.value!=us.value){ 37 uE.innerHTML = "两次输入的密码必须一致"; 38 39 40 } 41 42 }
