js 时间转字符串时间

// 格式化日期，如月、日、时、分、秒保证为2位数
    formatNumber (n) {
      n = n.toString()
      return n[1] ? n : '0' + n
    },
    // 参数number为毫秒时间戳，format为需要转换成的日期格式
    formatTime (number, format) {
      const time = new Date(number)
      const newArr = []
      const formatArr = ['Y', 'M', 'D', 'h', 'm', 's']
      newArr.push(time.getFullYear())
      newArr.push(this.formatNumber(time.getMonth() + 1))
      newArr.push(this.formatNumber(time.getDate()))
      newArr.push(this.formatNumber(time.getHours()))
      newArr.push(this.formatNumber(time.getMinutes()))
      newArr.push(this.formatNumber(time.getSeconds()))
      for (const i in newArr) {
        format = format.replace(formatArr[i], newArr[i])
      }
      return format
    },

用法：

that.formatTime(new data(), 'Y/M/D h:m:s')