下面是一段比较实用的代码实例，是关于交社保的计算。

代码实例:

fuckShebao: function (req, res, next) {
  //每个月1800的社保
  var day = (1800 / 30);
  //交15年交满
  var full_days = 365 * 15;
  //到65岁退休
  var old_days= 365*35;
  var i = 0;
  var p = 0;
  var total = 0;
  //时光飞逝
  while (i < full_days) {
    total = total + day;
    i++;
    total = total + (total * 1.16 / 10000);
  }
  //15年后是那么多钱
  var year15 = total;
  //不再交了,继续放利息(余额宝)
  if (i == full_days) {
    while (p < (old_days-full_days)) {
      total = total + (total * 1.16 / 10000);
      p++;
    }
  }
  //结算出来:
  var all =  (total+"").toMoney();
  year15 = (year15 + "").toMoney();
  var re = {all: all, year15: year15};
  res.json(re);
}

运算结果:

{
 "all": "1070226.48",
 "year15": "458919.44"
}