数字滚动

1、简易效果

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <p class="counter-value">350000</p>
    <p class="counter-value">50000</p>
    <p class="counter-value">250000</p>
</body>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
    // 数字滚动
    function numInit(start) {
        $('.counter-value').each(function () {
            $(this).prop('Counter', 0).animate({
                Counter: $(this).text()
            }, {
                duration: 2500,
                easing: 'swing',
                step: function (now) {
                    $(this).text(now.toFixed(0));
                }
            });
        });
    }
    numInit();
</script>
</html>

2、初始化加载+定时刷新增加数值

　　参考： https://www.cnblogs.com/liangtao999/p/11768697.html