$(function(){
	/*****************counter_list*****************/
	//窗口显示才加载
	var video=document.getElementById("bgvid");
	var $ww=$(window).width();
	var wrapTop = $(".counters").offset().top;
		var istrue = true;
		$(window).on("scroll",
			function() {
				var s = $(window).scrollTop();
				if (s > wrapTop - 500 && istrue && s < wrapTop + 500) {
					if($ww>768){
					  video.play();
					}
					
					$(".counter").each(count);
					function count(a) {
						var b = $(this);
						a = $.extend({},
						a || {},
						b.data("countToOptions") || {});
						b.countTo(a)
					};
					istrue = false;
				}else if(s <= wrapTop - 500 || s >= wrapTop + 500){
					// 只执行一次才注释的
					// video.pause();
					// $(".counter").each(count);
					// function count(a) {
					// 	var b = $(this);
					// 	a = $.extend({},
					// 	a || {},
					// 	b.data("countToOptions") || {});
					// 	b.countTo(0)
					// };
					// istrue = true;
				}
			});
			//设置计数
			$.fn.countTo = function (options) {
				options = options || {};
				return $(this).each(function () {
					//当前元素的选项
					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);
					//更新值
					var loops = Math.ceil(settings.speed / settings.refreshInterval),
						increment = (settings.to - settings.from) / loops;
					//更改应用和变量
					var self = this,
					$self = $(this),
					loopCount = 0,
					value = settings.from,
					data = $self.data('countTo') || {};
					$self.data('countTo', data);
					//如果有间断，找到并清除
					if (data.interval) {
						clearInterval(data.interval);
					};
					data.interval = setInterval(updateTimer, settings.refreshInterval);
					//初始化起始值
					render(value);
					function updateTimer() {
						value += increment;
						loopCount++;
						render(value);
						if (typeof(settings.onUpdate) == 'function') {
							settings.onUpdate.call(self, value);
						}
						if (loopCount >= loops) {
							//移出间隔
							$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,               //数字开始的值
					to:0,                 //数字结束的值
					speed:1000,           //设置步长的时间
					refreshInterval:50,  //隔间值
					decimals:0,           //显示小位数
					formatter: formatter, //渲染之前格式化
					onUpdate:null,        //每次更新前的回调方法
					onComplete:null       //完成更新的回调方法
				};
				function formatter(value, settings){
					return value.toFixed(settings.decimals);
				}
				//自定义格式
				$('#count-number').data('countToOptions',{
					formmatter:function(value, options){
						return value.toFixed(options.decimals).replace(/\B(?=(?:\d{3})+(?!\d))/g, ',');
					}
				});
				//定时器
				$('.timer').each(count);
				function count(options){
					var $this=$(this);
					options=$.extend({}, options||{}, $this.data('countToOptions')||{});
					$this.countTo(options);
				}
				
				
			var w = $(window).width();
			var h = $(window).height();
			var video2 = $('video');
			var videoH = video2[0].videoHeight;
			var videoW = video2[0].videoWidth;
			var aspect_ratio = videoW / videoH;
			$('#bgvid').width(w);
			$('#bgvid').height(w/aspect_ratio);
});