Hello
I tried, I do not know why this code does not work.
What is your comment?

Code JavaScript:
$(document).ready(function () {
var i = $('#gasht b').size() + 1;
 
$('#add').click(function(event){
  event.preventDefault();
  $('<p><label for="gashte"><input type="text" id="gashte" size="20" name="gasht_' + i +'" value="" placeholder="Input Value" /></label> <a href="#" id="rem">Remove</a></p>').appendTo('#gasht');
  i++;
  return false;
  });
});