javascript - jQuery: call the action's form after calling preventDefault()

Question

The code below shows an error message when a field is not filled.

As you can see I'm calling preventDefault(), but...how to call the action associated to the form if the field has been filled??

$('input#save').click(function(e){
  e.preventDefault()

  if($('#field_1').val() == ''){

    $('#error_file').show();

  }
});

Answer 1

$('input#save').click(function(e){
  e.preventDefault()

  if($('#field_1').val() == ''){

    $('#error_file').show();

  }
  else 
  {
     $('#my_form').submit();
  }
});