js时间戳转换

第一个参数传时间戳，第二个连接符可以看你的心情，我喜欢’-’

formatDate(value, spe = '/') {
      value = value * 1000 //10位数时间戳要乘1000 13位不用
      let data = new Date(value)
      let year = data.getFullYear()
      let month = data.getMonth() + 1
      let day = data.getDate()
      let h = data.getHours()
      let mm = data.getMinutes()
      let s = data.getSeconds()
      month = month > 9 ? month : '0' + month
      day = day > 9 ? day : '0' + day
      h = h > 9 ? h : '0' + h
      mm = mm > 9 ? mm : '0' + mm
      s = s > 9 ? s : '0' + s
      return `${year}${spe}${month}${spe}${day} ${h}:${mm}:${s}`
    }