Use JS to implement form validation (with code)

This time I will bring you the use of JS to implement form verification (with code). What are the precautions for using JS to implement form verification? The following is a practical case, let's take a look.

       
  
 
 
 
请输入你的注册信息
 
 
 
请输入你的用户名：
 
  
 
 
 
 
请输入你的年龄：
 
    
 
 
 
 
请输入你的EMAIL:
 
    
 
 
 
 
    
 
    
 
 
 
 
  

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Vue cross-domain normal debugging

##Detailed explanation of the use of ajax and jsonp

The above is the detailed content of Use JS to implement form validation (with code). For more information, please follow other related articles on the PHP Chinese website!