I initialize the values of the contents of new row

I initialize the values of the contents of new row

Dear Sir/madam

pls refer


Add row allow me to add new row with cloning

how can I initialize the values of the new row 
  1. Dropdown
  2.  td Cell value
  3. Inputs
so that In new row 
we will have 
blank row   
i.e.
no value selected in dropdown
or  nothing is selected and blank values in input
and <td> </td> values will be blank
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One more question

Once User select a value from dropdown
of newly populated row
i want to populate certain values in columns i.e. <td> </td> of the same row 
based on  
new value (i.e. id) of the dropdown using AJAX

i donow know how can i do it