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一个验证用户注册的小实例

一个验证用户注册的小实例

一、总结

一句话总结：

原生js中对getElementById()进行封装是非常常用，可以指定为$或者别的函数

 

 

1、对 document.getElementById() 封装？

原生js中对getElementById()进行封装是非常常用，可以指定为$或者别的函数
function packaging(id) {
    return document.getElementById(id);
}

 

 

2、原生js中表单元素失去焦点事件？

onblur方法，getElementById()的元素直接调用onblur方法：mailbox.onblur = function () { /*函数内容*/ }
 1 mailbox.onblur = function () { //Email地址
 2     var sum = /^([a-zA-Z0-9]+[-_\.]?)+@[a-zA-Z0-9]+\.[a-z]+$/;
 3     console.log("2");
 4     if (sum.test(packaging("mailbox").value)) {
 5         packaging("picture").src = "img/√.jpg";
 6         packaging("site").innerHTML = "合法";
 7         mailboxpang = true;
 8     } else if (packaging("mailbox").value == "") {
 9         packaging("picture").src = "img/感叹号.PNG";
10         packaging("site").innerHTML = "请输入您的Email地址";
11         mailboxpang = false;
12     } else {
13         packaging("picture").src = "img/感叹号.PNG";
14         packaging("site").innerHTML = "输入错误，至少3位数,最多7位数";
15         mailboxpang = false;
16     }
17 
18 }

 

 

二、一个验证用户注册的小实例

1、截图

 

 

 

2、代码

注：代码不一定可行，只是一个书写的参考模板

  1 <!DOCTYPE html>
  2 <html>
  3 <head>
  4     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  5     <title>验证用户注册</title>
  6     <meta charset="utf-8" />
  7     <style>
  8         #mailbox,#user,#password,#repetition,#phone 
  9         {
 10             width: 250px;
 11         }
 12 
 13         img 
 14         {
 15             height: 10px;
 16         }
 17 
 18         a 
 19         {
 20             color: black;
 21         }
 22         #register {
 23             width: 150px;
 24             height: 45px;
 25             background-color: sandybrown;
 26             border-radius: 10px;
 27         }
 28     </style>
 29 </head>
 30 <body>
 31     <form>
 32         *Email&nbsp;&nbsp;&nbsp;&nbsp;：
 33         <input type="text" value="" placeholder="请输入您的Email地址" name="" id="mailbox" />
 34         <img id="picture" />
 35         <span id="site"></span>
 36         <br />
 37         <br />
 38         *用户名&nbsp;&nbsp;&nbsp;：
 39         <input type="text" value="" name="" placeholder="请输入你的用户名" id="user" />
 40         <img id="pictureTwo" />
 41         <span id="import"></span>
 42         <br />
 43         <br />
 44         *密&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;码：
 45         <input type="password" value="" name="" placeholder="请输入密码" id="password" />
 46         <img id="pictureThree" />
 47         <span id="cipher"></span>
 48         <br />
 49         <br />
 50         *确认密码：
 51         <input type="password" value="" name="" placeholder="请输入您的重复密码" id="repetition" />
 52         <img id="pictureFour" />
 53         <span id="repetitive"></span>
 54         <br /><br />
 55         *在线联系：
 56         <input type="text" value="" name="" placeholder="请输入您的电话号码" id="phone" /><a
 57             href="#">没有旺旺？注册</a>&nbsp;&nbsp;&nbsp;<a href="#">下载阿里旺旺</a>
 58         <img id="pictureFive" />
 59         <span id="number"></span>
 60         <br /><br />
 61         <input type="checkbox" name="read" id="read" value="" />我已阅读会员权益和义务
 62         <br /><br />
 63         <input type="button" value="注  册" name="" id="register" onclick="login()" />
 64     </form>
 65     <script>
 66         //packaging封装函数
 67         function packaging(id) {
 68             return document.getElementById(id);
 69         }
 70         var mailboxpang = null;
 71         var userpang = null;
 72         var passwordname = null;
 73         var repetitionname = null;
 74         var phonename = null;
 75         var readpang = null;
 76         var mailbox = packaging("mailbox");
 77         var user=packaging("user")
 78         var password =  packaging("password");
 79         var repetition=packaging("repetition")
 80         var phone=packaging("phone")
 81         mailbox.onblur = function () { //Email地址
 82             var sum = /^([a-zA-Z0-9]+[-_\.]?)+@[a-zA-Z0-9]+\.[a-z]+$/;
 83             console.log("2");
 84             if (sum.test(packaging("mailbox").value)) {
 85                 packaging("picture").src = "img/√.jpg";
 86                 packaging("site").innerHTML = "合法";
 87                 mailboxpang = true;
 88             } else if (packaging("mailbox").value == "") {
 89                 packaging("picture").src = "img/感叹号.PNG";
 90                 packaging("site").innerHTML = "请输入您的Email地址";
 91                 mailboxpang = false;
 92             } else {
 93                 packaging("picture").src = "img/感叹号.PNG";
 94                 packaging("site").innerHTML = "输入错误，至少3位数,最多7位数";
 95                 mailboxpang = false;
 96             }
 97 
 98         }
 99        user.onblur = function () { //用户名
100             var sum = /^[a-zA-Z].{5,8}$/;
101             if (sum.test(packaging("user").value)) {
102                 packaging("pictureTwo").src = "img/√.jpg";
103                 packaging("import").innerHTML = "合法";
104                 userpang = true;
105             } else if (packaging("user").value == "") {
106                 packaging("pictureTwo").src = "img/感叹号.PNG";
107                 packaging("import").innerHTML = "用户名不能为空";
108                 userpang = false;
109             } else {
110                 packaging("pictureTwo").src = "img/感叹号.PNG";
111                 packaging("import").innerHTML = "须以字母开头，至少6位，建议使用Email";
112                 userpang = false;
113             }
114         }
115         password.onblur = function () { //密码
116                 var sum = /^\w{3,6}$/;
117                 if (sum.test(packaging("password").value)) {
118                     packaging("pictureThree").src = "img/√.jpg";
119                     packaging("cipher").innerHTML = "合法";
120                     passwordname = true;
121                 } else if (packaging("password").value == "") {
122                     packaging("pictureThree").src = "img/感叹号.PNG";
123                     packaging("cipher").innerHTML = "密码不能为空";
124                     passwordname = false;
125                 } else {
126                     packaging("pictureThree").src = "img/感叹号.PNG";
127                     packaging("cipher").innerHTML = "密码设置至少3位数，最多7位数";
128                     passwordname = false;
129                 }
130         }
131         repetition.onblur = function (){//确认密码
132           if(packaging("repetition").value == ""){
133                     packaging("pictureFour").src = "img/感叹号.PNG";
134                     packaging("repetitive").innerHTML = "密码不能为空";
135                     repetitionname = false;
136                 }
137                 else  if(this.value===password.value){
138                     packaging("pictureFour").src = "img/√.jpg";
139                     packaging("repetitive").innerHTML = "合法";
140                     repetitionname=true;
141                 }
142                
143                 else{
144                     packaging("pictureFour").src = "img/感叹号.PNG";
145                     packaging("repetitive").innerHTML = "两次密码不一致，请重新输入";
146                     repetitionname = false;
147                 }
148             } 
149         phone.onblur = function () { //输入联系方式
150             var sum =/^\d{11}$/;
151             if (sum.test(packaging("phone").value)) {
152                 packaging("pictureFive").src = "img/√.jpg";
153                 packaging("number").innerHTML = "合法";
154                 phonename = true;
155             } else if (packaging("phone").value == "") {
156                 packaging("pictureFive").src = "img/感叹号.PNG";
157                 packaging("number").innerHTML = "请输入旺旺ID，方便企业用户在线联系你";
158                 phonename = false;
159             } else {
160                 packaging("pictureFive").src = "img/感叹号.PNG";
161                 packaging("number").innerHTML = "输入错误，不能为字母数字下划线开头且长度为11位数字";
162                 phonename = false;
163             }
164         }
165     </script>
166 </body>
167 
168 </html>

 

 

 
posted @ 2019-12-30 23:32  范仁义  阅读(204)  评论(0)  编辑  收藏  举报