js获取当前周和时间

获取当前周几

charAt（）方法返回字符串中指定索引（下标）处的字符。

如 ''hello".charAt(0)， 返回 'h', 往下依次排序

getDay ()  方法返回指定日期是星期几（从 0 到 6）

export const getWeek = () => {
  let str = '日一二三四五六'
  let d = new Date().getDay()
  let c = str.charAt(d)
  return `周${c}`
}

 获取当前日期和时间

export const getMDHMS = function () {
  const time = new Date()
  let month = time.getMonth() + 1
  let day = time.getDate()
  let hour = time.getHours()
  let min = time.getMinutes()
  let second = time.getSeconds()
  if (month < 10) {
    month = `0${month}`
  }
  if (day < 10) {
    day = `0${day}`
  }
  if (hour < 10) {
    hour = `0${hour}`
  }
  if (min < 10) {
    min = `0${min}`
  }
  if (second < 10) {
    second = `0${second}`
  }
  return [`${month}-${day}`, `${hour}:${min}:${second}`]
}