How to increase the value of a quantity field with jQuery?

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北荒 2021-01-07 05:25

I have a form with some quantity field and a plus and minus sign on each side,

    
        product1


      
      
        
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                   执笔经年
                                             
                
                
                (楼主)
            
              
              
                2021-01-07 05:43
              

            
            
                        
This is the improved response of the first aswer:






    
        product1
                
                
        



        product2
                
                
        

    




I hope they serve.... :D
    
             
                                                        
            
            
              
                
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