Animazione di sviluppo numeri di un contatore numerico.

AnimatedCounter.js

var animateCounters = function(duration) {
    var $count = $('.counter');
    if($count.length) {
      $count.each(function () {
        $(this).prop('Counter',0).animate({
          Counter: $(this).attr('count-number')
        }, {
          duration: duration,
          easing: 'swing',
          step: function (now) {
            $(this).text(Math.ceil(now));
          }
        });
      });
    }
  };
  
  // How to use it:
  // Add class="counter" and data-count=":value" to element