获取两个日期相差的天数
const days = endDate.getTime() - startDate.getTime() < 0 ?
0 : Number(new BigNumber(new BigNumber(endDate.getTime() - startDate.getTime()).dividedBy(24 * 60 * 60 * 1000)).toFixed(0, BigNumber.ROUND_UP))
const days = endDate.getTime() - startDate.getTime() < 0 ?
0 : Number(new BigNumber(new BigNumber(endDate.getTime() - startDate.getTime()).dividedBy(24 * 60 * 60 * 1000)).toFixed(0, BigNumber.ROUND_UP))