jquery数字增加动画特效

示例1:简单的动画
$('#lines').animateNumber({ number: 165 });
示例2:分隔符
var comma_separator_number_step=$.animateNumber.numberStepFactories.separator(',')
$('#world-population').animateNumber(
  {
    number: 7095217980,
    numberStep: comma_separator_number_step
  }
);
示例3:多个属性
var percent_number_step = $.animateNumber.numberStepFactories.append(' %')
$('#fun-level').animateNumber(
  {
    number: 100,
    color: 'green',
    'font-size': '30px',
    easing: 'easeInQuad',
    numberStep: percent_number_step
  },
  15000
);
示例4:自定义号码步骤处理程序
$('#points').animateNumber(
  {
    number: 72,
    numberStep: function(now, tween) {
      var target = $(tween.elem);
      target
        .prop('number', now) // keep current prop value
        .text(now);
    },
    'slow'
  }
);
示例5:自定义动画起始点
$('#ten')
  .prop('number', 10)
  .animateNumber(
    {
      number: 100
    },
    20000
  );
示例6:小数
var decimal_places = 2;
var decimal_factor = decimal_places === 0 ? 1 : decimal_places * 10;
$('#decimals')
  .animateNumber(
    {
      number: 5 * decimal_factor,
      numberStep: function(now, tween) {
        var floored_number = Math.floor(now) / decimal_factor,
            target = $(tween.elem);
        if (decimal_places > 0) {
          // force decimal places even if they are 0
          floored_number = floored_number.toFixed(decimal_places);
          // replace '.' separator with ','
          floored_number = floored_number.toString().replace('.', ',');
        }
        target.text('$' + floored_number);
      }
    },
    20000
  );
例7:反向倒计时
$('#revese-countdown')
  .prop('number', 10)
  .animateNumber(
    {
      number: 0,
      numberStep: function(now, tween) {
        var target = $(tween.elem),
            rounded_now = Math.round(now);
        target.text(now === tween.end ? 'Launch!' : rounded_now);
      }
    },
    10000,
    'linear'
  );