AngularJS Input Validation

AngularJS forms and controls can provide validation capabilities and warn against illegal data entered by the user. (client-side validation does not ensure that user input data is secure, so data validation on the server is also required.) ）

Example code:

<! DOCTYPE html>
Analytical
The AngularJS ng-model directive is used to bind input elements into the model.
The model object has two properties: user and email.
We used the ng-show directive and color:red the message is displayed $dirty or $invalid .

 
 
 
  
  
 
   
 
    
Properties
 
    
Description
 
   
 
   
 
    
$dirty
 
    
The form is filled with records
 
   
 
   
 
    
$valid
 
    
The contents of the field are valid
 
   
 
   
 
    
$invalid
 
    
The contents of the field are illegal
 
   
 
   
 
    
$pristine
 
    
form does not fill in records
 
   
 
  
 
 
 
AngularJS Input Validation