每三秒执行一次,若是需要触发执行,可添加一个单击事件.
<!DOCTYPE HTML>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312"/>
    <title></title>
    <style type="text/css">
    .textC {
        position: absolute;
        width: 500px;
        overflow: hidden;
        margin-top: 100px;
        line-height: 30px;
        margin-left: 300px;
        height: 30px;
    }
    .textC span {
        color: #13BEEC;
        font-size: 28px;
        font-weight: bold;
        position: absolute;
    }</style>
    <script src="jquery-3.2.1.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            NumbersAnimate.Target = $(".textC");
            NumbersAnimate.Numbers = 12389623;
            NumbersAnimate.Duration = 1500;
            NumbersAnimate.Animate();
        });
        var NumbersAnimate = {
            Target: null,
            Numbers: 0,
            Duration: 500,
            Animate: function () {
                var array = NumbersAnimate.Numbers.toString().split("");
//遍历数组
                for (var i = 0; i < array.length; i++) {
                    var currentN = array[i];
//数字append进容器
                    var t = $("<span></span>");
                    $(t).append("<span class=\"childNumber\">" + array[i] + "</span>");
                    $(t).css("margin-left", 18 * i + "px");
                    $(NumbersAnimate.Target).append(t);
//生成滚动数字,根据当前数字大小来定
                    for (var j = 0; j <= currentN; j++) {
                        var tt;
                        if (j == currentN) {
                            tt = $("<span class=\"main\"><span>" + j + "</span></span>");
                        } else {
                            tt = $("<span class=\"childNumber\">" + j + "</span>");
                        }
                        $(t).append(tt);
                        $(tt).css("margin-top", (j + 1) * 25 + "px");
                    }
                    $(t).animate({marginTop: -((parseInt(currentN) + 1) * 25) + "px"}, NumbersAnimate.Duration, function () {
                        $(this).find(".childNumber").remove();
                    });
                }
            },
            ChangeNumber: function (numbers) {
                var oldArray = NumbersAnimate.Numbers.toString().split("");
                var newArray = numbers.toString().split("");
                for (var i = 0; i < oldArray.length; i++) {
                    var o = oldArray[i];
                    var n = newArray[i];
                    if (o != n) {
                        var c = $($(".main")[i]);
                        var num = parseInt($(c).html());
                        var top = parseInt($($(c).find("span")[0]).css("marginTop").replace('px', ''));

                        for (var j = 0; j <= n; j++) {
                            var nn = $("<span>" + j + "</span>");
                            if (j == n) {
                                nn = $("<span>" + j + "</span>");
                            } else {
                                nn = $("<span class=\"yy\">" + j + "</span>");
                            }
                            $(c).append(nn);
                            $(nn).css("margin-top", (j + 1) * 25 + top + "px");
                        }
                        var margintop = parseInt($(c).css("marginTop").replace('px', ''));
                        $(c).animate({marginTop: -((parseInt(n) + 1) * 25) + margintop + "px"}, NumbersAnimate.Duration, function () {
                            $($(this).find("span")[0]).remove();
                            $(".yy").remove();
                        });
                    }
                }
                NumbersAnimate.Numbers = numbers;
            },

            RandomNum: function (m, a) {
                var Range = a - m;
                var Rand = Math.random();
                return (m + Math.round(Rand * Range));
            }
        }
        $(function () {
            setInterval(function () {
                NumbersAnimate.ChangeNumber(NumbersAnimate.RandomNum(10000000, 19999999));
                console.log(11);
            }, 3000)
        })
    </script>
</head>
<body>
</body>
</html>