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Can I use non existing CSS classes?

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北荒
北荒 2020-11-27 12:54

I have a table where I show/hide a full column by jQuery via a CSS class that doesn\'t exist:


   
      

         

        
                      

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                  北恋        
                
              
    
                            
    
                2020-11-27 13:57
              
    
            
    
            
    
                                                                       

    It will have no effect if you apply a class on a HTML element, and that class is not defined in CSS. It is a common practice and like Aamir afridi said if you are using classes for js only purpose, it is a good practice to prefix them with js- . 
    


    It is not only valid for calsses, but also for id attribute of html elements.
    
                                                                        
    
                                                        
    
            
    
            
    
              
                
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