html incrementing js

increment.js

$('.merrits').find('.num')
	.each(function() {
		// set each .num back to zero and add a class to look for
		var $t = $(this);
		$t.data('number', $t.html());
		$t.html('0');
	})
	.on('in.Inview', function() {
		$(this).data('interval', window.setInterval($.proxy(function() {
			var $t = $(this),
				num = parseInt($t.html()) + 1;
			$t.html(num);
			if (num >= +$t.data('number')) {
				clearInterval($(this).data('interval'));
			}
		}, this), 5));
	})
	.Inview();