SyntaxError: JSON.parse: unexpected non-whitespace character after JSON data at line 1 column 2 of the JSON data

<script type="text/javascript">
      
$(document).ready(function(){
	 $(location).attr('href');
     
		$('#myddl1').change(function(){
			 
  		var fk_i_id = $('#myddl1').val().trim();
		if(fk_i_id != 0)
		{ 
				alert(fk_i_id);
			 	
			$.ajax({
				 type:'POST',
				 url:'http://localhost/data/performa/index.php/Testing/getCatB?id='+fk_i_id,
				 datatype: 'json',
				  data: {id:fk_i_id},
				  
				  success: function(data){
				  var opts = $.parseJSON(data);
					alert(data);
				  
				  
				 $('#myddl2').empty();
				$.each(opts, function(i, d) {

					  $('#myddl2').append('<option value="' + d.pk_i_sub_id + '">' + d.s_name + '</option>');
                });


				
				} 

			 
         



			});
		}
	})
})
        



            
            </script>
  

 

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