vue3计算当前日期往前推一个月的日期，当前日期往前推7天

  let startDate = $ref('')
  let endDate = $ref('')
  const getCurrentMonthRange = () => {
    const today = new Date()
    let currentDate = today.toISOString().split('T')[0] // 格式化当前日期
    // 计算往前推一个月的日期
    const previousMonth = new Date(today)
    previousMonth.setMonth(today.getMonth() - 1) // 将月份减 1
    startDate = previousMonth.toISOString().split('T')[0] + ' ' + '00:00:00'
    endDate = today.toISOString().split('T')[0] + ' ' + '23:59:59'
  }

 setTimes() {
       // 获取今天的日期
       const today = new Date();
       today.setDate(today.getDate());
       today.setHours(23, 59, 59, 0); //
      // 获取七天前的日期
      const sevenDaysAgo = new Date(today);
      sevenDaysAgo.setDate(today.getDate() - 6);
      sevenDaysAgo.setHours(0, 0, 0, 0); // 将时分秒设置为 00:00:00
      // 将日期格式化为字符串（可选）
      this.searchForm.endTime = today.toISOString().split('T')[0]+' '+ '23:59:59';
      this.searchForm.startTime = sevenDaysAgo.toISOString().split('T')[0]+ ' '+ '00:00:00';
    },