Анимация счетчика цифр при скролле

Анимация счетчика цифр при скролле.txt

/* ANIMATE NUMBERS */
var isResizeble = false;

function animateNumb() {		
	isResizeble = true;
	$('.benefits-count').each(function() {
		$(this).prop('counter',0).animate({
			counter:$(this).data('count')
		},{
			duration: 2000,
			easing: 'swing',
			step: function(now) {
				$(this).text(Math.ceil(now));
			}
		});
	});
}
$(window).on('scroll load', function() {
	var target = $('.benefits').offset().top,
			screenPart = $(window).innerHeight() * 0.66;
	if($(window).scrollTop() >= (target - screenPart) && !isResizeble) {		
		animateNumb();
	}
});
  
//HTML
<ul class="benefits__list">
	<li class="benefits__item">
		<h3>We spent</h3>
		<div class="benefits-count" data-count="540">0</div>
		<div class="benefits-text">hours</div>
		<p>testing different <br>	website builders</p>
	</li>
</ul>