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js form verification example analysis_javascript skills

WBOY
Release： 2016-05-16 16:14:45
Original
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The example in this article describes the method of form verification using js. Share it with everyone for your reference. The specific implementation method is as follows:

1. Traditional form validation code

Copy code The code is as follows:
 
 
 
 
表单验证 
 
 
 


Email:
                                                                           

Password:


Re-enter password:


Name:


                                                                      





2. Form verification with prompt information behind the input box

Copy code The code is as follows:
 
 
 
 
表单验证 
 
 
 
 
 
     
 
           Email: 
     
    
     
 
           密码: 
     
 
     
 
          重输密码: 
     
 
     
 
          姓名： 
     
 
     
 
           
     
 
 
 
 

效果图如下所示：

3. 在输入框失去焦点时触发校验函数

复制代码 代码如下:
 
 
 
 
表单验证 
 
 
 
 
 
     
 
           Email: 
     
    
     
 
           密码: 
     


Re-enter password:


Name:


                                                                      




The rendering is as follows:

I hope this article will be helpful to everyone’s JavaScript programming design.

Related labels：
js form verify
source：php.cn
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