Needs spacing removing and results emptied

Works fine until you empty the box or input blank spaces.

I have changed the javascript to get around this…

<script>
      jQuery('#my-s').keyup(function() {
		  /* 1. TRIMS THE SUBMITTED VALUE LEFT AND RIGHT AND IS ANYTHING OTHER THAN BLANK */
		  if (jQuery.trim(jQuery("#my-s").val()) != '')
		  {
			jQuery.ajax({
			  'type':   'get',
			  'url' :   '<?php echo $plugin_url.'ajax/simple-search.php'; ?>',
			  'data':   's=' + jQuery.trim(jQuery('#my-s').val()),
			  'success': function (result) {
				jQuery('#results').html(result);
			  }
			})
		  }
		  else
		  {
		  	/* 2. CLEARS THE RESULTS BOX
			ONLY NEEDED IF YOU DELETE THE VALUES IN THE SEARCH BOX TO MAKE IT EMPTY */
			jQuery('#results').html('');
		  }
      })
    </script>

https://wordpress.org/plugins/ajax-search/