lsc-utils/src/date/index.js

一般常用的前端工具类

/**
 * 计算两个时间差 x年x月x日
 * @param startTime 开始时间
 * @param endTime   结束时间
 */
export function monthDayDiff (startTime, endTime) {
  const flag = [1, 3, 5, 7, 8, 10, 12, 4, 6, 9, 11, 2]
  const start = new Date(startTime)
  const end = new Date(endTime)
  let year = end.getFullYear() - start.getFullYear()
  let month = end.getMonth() - start.getMonth()
  let day = end.getDate() - start.getDate()
  if (month < 0) {
    year--
    month = end.getMonth() + (12 - start.getMonth())
  }
  if (day < 0) {
    month--
    const index = flag.findIndex((temp) => {
      return temp === start.getMonth() + 1
    })
    let monthLength
    if (index <= 6) {
      monthLength = 31
    } else if (index > 6 && index <= 10) {
      monthLength = 30
    } else {
      monthLength = 28
    }
    day = end.getDate() + (monthLength - start.getDate())
  }
  return `${year}岁${month}月${day}天`
}