JavaScript获取某个时间到n个月前时间组成的时间数组

代码

//time是date格式时间或字符串，n表示那个月，type是返回结果链接符
getLastNMon (time, n, type = '') {
    let date = new Date(time)
    let year = date.getFullYear()
    let month = date.getMonth() + 1
    let arry = []
    for (let i = 0; i < n; i++) {
      if (month <= 0) {
        year = year - 1
        month = month + 12
      }
      if (month < 10) {
        month = '0' + month
      }
      arry.push( year + type + month)
      month = month - 1
    }
    return arry.reverse()
  }
getLastNMon ('2022-12-08', 5) //[202208,202209,202210,202211,202212]

getLastNMon ('2022-12-08', 5,'-') //[2022-08,2022-09,2022-10,2022-11,2022-12]

getLastNMon ('2022-01', 7) // [202107,202108,202109,202110,202111,202112,202201]