gistfile1.txt

$(function() {
  var $firstNameField = $("#first_name");
  var $target = $(".txt-parabens");
  var $message = $("<p class='lead-name' style='text-align: center;'></p>");
    $firstNameField.on('change', function() {
        var inputValue = $firstNameField.val();
        
        if (inputValue == null || inputValue == false) {
          // hide the text
          $message.detach();
        }
        else {
          $message.text(inputValue);
          $message.appendTo($target);
        }
    });
});