/**
 * 获取n天前的time
 * @param {number} day
 * @return {number}
 */
export function timeBeforeDay(day: number): number {
  let time = Date.now();
  return time - day * 1000 * 24 * 24;
}

//间隔天数
export function calcBetweenDays(time1: number, time2: number) {
  let v1 = Math.floor(time1/3600/24/1000);
  let v2 = Math.floor(time2/3600/24/1000);
  return Math.abs(v1 - v2);
}