jquery动态数字翻滚计数到指定数字的文字特效代码

动画效果：

具体代码：

<!DOCTYPE html>
<html>
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
		<title>jquery动态数字翻滚计数到指定数字的文字特效代码</title>
		<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
	</head>
	<body>
		<h2 class="timer" id="count-number" data-from='333' data-to="6666" data-speed="1000"></h2>
		<h2 class="timer" id="count-number" data-from='8888' data-to="222" data-speed="1000"></h2>			
		<script type="text/javascript">
			$.fn.countTo = function(options) {
				options = options || {};
				return $(this).each(function() {
					var settings = $.extend({}, $.fn.countTo.defaults, {
						from: $(this).data('from'),
						to: $(this).data('to'),
						speed: $(this).data('speed'),
						refreshInterval: $(this).data('refresh-interval'),
						decimals: $(this).data('decimals')
					}, options);					
					var loops = Math.ceil(settings.speed / settings.refreshInterval),
						increment = (settings.to - settings.from) / loops;						
					var self = this,
						$self = $(this),
						loopCount = 0,
						value = settings.from,
						data = $self.data('countTo') || {};
					$self.data('countTo', data);
					if(data.interval) {
						clearInterval(data.interval);
					}
					data.interval = setInterval(updateTimer, settings.refreshInterval);
					render(value);
					function updateTimer() {
						value += increment;
						loopCount++;
						render(value);
						if(typeof(settings.onUpdate) == 'function') {
							settings.onUpdate.call(self, value);
						}
						if(loopCount >= loops) {
							$self.removeData('countTo');
							clearInterval(data.interval);
							value = settings.to;
							if(typeof(settings.onComplete) == 'function') {
								settings.onComplete.call(self, value);
							}
						}
					}
					function render(value) {
						var formattedValue = settings.formatter.call(self, value, settings);
						$self.html(formattedValue);
					}
				});
			};

			$.fn.countTo.defaults = {
				from: 0, // the number the element should start at
				to: 0, // the number the element should end at
				speed: 1000, // how long it should take to count between the target numbers
				refreshInterval: 100, // how often the element should be updated
				decimals: 0, // the number of decimal places to show
				formatter: formatter, // handler for formatting the value before rendering
				onUpdate: null, // callback method for every time the element is updated
				onComplete: null // callback method for when the element finishes updating
			};

			function formatter(value, settings) {
				return value.toFixed(settings.decimals);
			}

			$('#count-number').data('countToOptions', {
				formatter: function(value, options) {
					return value.toFixed(options.decimals).replace(/\B(?=(?:\d{3})+(?!\d))/g, ',');
				}
			});

			$('.timer').each(count);

			function count(options) {
				var $this = $(this);
				options = $.extend({}, options || {}, $this.data('countToOptions') || {});
				$this.countTo(options);
			}
		</script>
	</body>
</html>