jQuery: JSON AJAX Post

<script>
$(function() {

	$('#save').submit(function() {
		var formData = $(this).serialize();
		$.post('post.php', formData, function(output) {
			if (output.result == 1) {
				alert(output.message);
			} else {
				alert('We have an error somewhere!');
			}
		}, json);
	});

});
</script>

<?php
$data = array(
	'result' => 1,
	'message' => 'It looks good!'
);

echo json_encode($data);