Add something after the “n” element using jQuery

Question

For a markup like

    
div 1
    
div 2
    
div 3
    

        
      

Answer 1

Try it like this:

$("#holder > div:nth-child(2n)").after("
insert here
");

It will insert the

insert here

after every 2nd row:

$("#holder > div:nth-child(2)").after("
insert here
");