jQuery数字滚动增加动画特效

js代码

<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/digitalScroll.js"></script>
<script type="text/javascript">
var sum = 13000;
$(function() {
	setInterval(function(){
		show_num1(sum)
	},1000);
});

function show_num1(n) {
	sum=sum+5;
	console.log(n);
	var it = $(".t_num1 i");
	var len = String(n).length;
	for(var i = 0; i < len; i++) {
		if(it.length <= i) {
			$(".t_num1").append("<i></i>");
		}
		var num = String(n).charAt(i);
		//根据数字图片的高度设置相应的值
		var y = -parseInt(num) * 58;
		var obj = $(".t_num1 i").eq(i);
		obj.animate({
			backgroundPosition: '(0 ' + String(y) + 'px)'
		}, 'slow', 'swing', function() {});
	}
	$("#cur_num").val(n);
}
</script>