问MomentJS获取相对于今天的以前日期

EN

const monthArr = [];
const dayArr= [];
const currentDate = moment(new Date()).format("DD");

for (let i = 0; i < +currentDate; i++) {
  const month = moment(new Date())
    .subtract(i, "day")
    .format("MMYYYY");

  const day = moment(new Date())
    .subtract(i, "day")
    .format("MMDDYYYY");

  console.log("month" + month);
  console.log("day" + day);

  let monthObj = {};
  let dailyObj = {};

  monthArr.push(
    (monthObj = {
      data: {
        [month]: Object.assign({}, document)
      }
    })
  );
  day.push(
    (dailyObj = {
      data: {
        [day]: Object.assign({}, document)
      }
    })
  );

  monthly(user_id, monthArr[i]) &&
  daily(user_id, dayArr[i]);
}