How to get max attribute value in jquery?

Sometimes, you have a many tag with same class and attribute with value, but you need to find maximal value of attribute from that comman class, In bellow you have same html tag:

<ul>
	<li class="test" data-id="3">hi</li>
	<li class="test" data-id="5">hey</li>
	<li class="test" data-id="1">hello</li>
</ul>

Now, you require to get max value, i mean you need to 5, because that is big value from other, so you can get maximal value from this way:

var max = 0;
$('.test').each(function() {
  var value = parseInt($(this).data('id'));
  max = (value > max) ? value : max;
});
alert(max);