jQuery Forum

Its not working because because newly IMAE / S.N fields missing imae class, you keyup function delegated by that class only.

By default you have only row and keyup works because that row has that class.

Now even you add that class while adding new row then also your keyup will not do the changes as per you wish.

You will be entering in one row and it will update quantity in all rows as you used class selector which will selects all Jumlah input fields from  all rows. You need to update the Jumlah filed from the same row where keyup fired.

Your keyup will be like

1. $(document).on('keyup', '.imae', function() {
2.           var imae = $(this).val();
3.         if (imae!='')
4.           {
5.              
6.               $(this).parents('tr:first').find(".quantity").val(1);
7.             $(this).parents('tr:first').find(".quantity").prop("readonly", true);
8.         }
9.           else
10.           {
11.             $(this).parents('tr:first').find(".quantity").val("");
12.             $(this).parents('tr:first').find(".quantity").prop("readonly", false);
13.           }
14.       })

I updated your fiddle and its working there as well, check the function for adding more rows as well, i made changes there and added imae class to that input filed

http://jsfiddle.net/08ps55uf/13/