javascript根据当前日期获取往前一个月的日期数组

最新推荐文章于 2025-03-19 14:21:27 发布

lhp_36kr

最新推荐文章于 2025-03-19 14:21:27 发布

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分类专栏： javaScript

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getOneMonthDateList () {
  let daysInMonth = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
  let currentDate = new Date()
  currentDate.setMonth(currentDate.getMonth() + 1)
  let strYear = currentDate.getFullYear()
  let strDay = currentDate.getDate()
  let strMonth = currentDate.getMonth() + 1
  if (((strYear % 4) === 0) & ((strYear % 100) !== 0) || ((strYear % 400) === 0)) {
    daysInMonth[2] = 29
  }
  if (strMonth - 1 === 0) {
    strYear -= 1
    strMonth = 12
  } else {
    strMonth -= 1
  }
  strDay = Math.min(strDay, daysInMonth[strMonth])
  if (strMonth < 10) {
    strMonth = '0' + strMonth
  }
  if (strDay < 10) {
    strDay = '0' + strDay
  }
  let dateStr = strYear + '-' + strMonth + '-' + strDay
  const dateList = []
  let startDate = new Date(dateStr)
  while (true) {
    startDate.setDate(startDate.getDate() + 1)
    if (startDate.getTime() < currentDate.getTime()) {
      if (startDate.getDate() < 10) {
        // startDate.getFullYear() 获取年，此处没加上年份
        dateList.push(startDate.getMonth() + '.0' + startDate.getDate())
      } else {
        dateList.push(startDate.getMonth() + '.' + startDate.getDate())
      }
    } else {
      break
    }
  }
  return dateList
}