js 自定义倍速时钟

调用

  let clock = new Clock()
        let speed = 1

        clock
            .init({ time: new Date('2021-4-4 2:2:59'), speed: 1 })
            .start()
            .setSpeed(speed)
            .stop()

        setInterval(() => {
            console.log(clock.getChineseTime());
            // console.log(clock.getTime());
        }, 1000 / speed)

clock

class Clock {
    constructor(params) {
        this.time
        this.speed
        this.year
        this.month
        this.day
        this.hour
        this.minute
        this.second
        this.s // 存放时间字符串
        this.flag // 是否连续更新时间
        return this
    }
    init(params) {
        try {
            this.time = params.time
            this.speed = params.speed
            this.year = this.time.getFullYear()
            this.month = this.time.getMonth() + 1
            this.day = this.time.getDate()
            this.hour = this.time.getHours()
            this.minute = this.time.getMinutes()
            this.second = this.time.getSeconds()
            this.s = `${this.year} ${this.month} ${this.day} ${this.hour} ${this.minute} ${this.second}`.split(' ')
            return this
        } catch (error) {
            console.warn("参数错误", error);
        }
    }
    stop() {
        this.flag = 0
        return this
    }
    start() {
        this.flag = 1
        this.increase()
        return this
    }
    setSpeed(params) {
        this.speed = params
        return this
    }
    getChineseTime() {
        return this.formatTimeToChinese(this.s.join(' '))
    }
    getTime() {
        return `${this.s[0]}-${this.s[1]}-${this.s[2]} ${this.s[3]}:${this.s[4]}:${this.s[5]}`
    }
    sum(a, b) {
        try {
            return Number(a) + Number(b)
        } catch (error) {
            console.warn(error);
        }
    }
    // // 参数time为空格间隔的字符串时间
    formatTimeToChinese(time) {
        time = time.split('')
        '年月日时分秒'.split('').forEach(e => {
            for (let i = 0; i < time.length; i++) {
                let t = time[i]
                if (t === ' ') {
                    time[i] = e
                    return
                }
            }
            time.push(e)
        })
        return time.join('')
    }
    increase() {
        let _ = this
        setTimeout(() => {
            // 进行时间计算，进来先加1s
            let remainder
            let multiple
            _.s[5] = _.sum(_.s[5], 1)
            for (let index = _.s.length - 1; index >= 0; index--) {
                switch (index) {
                    // 秒
                    case 5:
                        {
                            let t = _.s[index]
                            multiple = parseInt(t / 60)
                            remainder = t % 60
                            if (multiple >= 1) {
                                _.s[index - 1] = _.sum(_.s[index - 1], multiple)
                            }
                            _.s[index] = `${remainder}`.padStart(2, '0')
                            break;
                        }
                    // 分
                    case 4:
                        {
                            let t = _.s[index]
                            multiple = parseInt(t / 60)
                            remainder = t % 60
                            if (multiple >= 1) {
                                _.s[index - 1] = _.sum(_.s[index - 1], multiple)
                            }
                            _.s[index] = `${remainder}`.padStart(2, '0')
                            break;
                        }
                    // 时
                    case 3:
                        {
                            let t = _.s[index]
                            multiple = parseInt(t / 24)
                            remainder = t % 24
                            if (multiple >= 1) {
                                _.s[index - 1] = _.sum(_.s[index - 1], multiple)
                            }
                            _.s[index] = `${remainder}`.padStart(2, '0')
                            break;
                        }
                    // 日
                    case 2:
                        {
                            let t = _.s[index]
                            let fullMoon = '1 3 5 7 8 10 12'
                            let moon = '4 6 9 11'
                            if (fullMoon.indexOf(_.month) + 1 > 0) {
                                multiple = parseInt(t / 31)
                                remainder = t % 31
                                if (multiple > 1) {
                                    _.s[index - 1] = _.sum(_.s[index - 1], multiple)
                                }
                            } else if (moon.indexOf(_.month) + 1 > 0) {
                                multiple = parseInt(t / 30)
                                remainder = t % 30
                                if (multiple > 1) {
                                    _.s[index - 1] = _.sum(_.s[index - 1], multiple)
                                }
                            } else if (Number(_.month) === 2) {
                                multiple = parseInt(t / 28)
                                remainder = t % 28
                                if (multiple > 1) {
                                    _.s[index - 1] = _.sum(_.s[index - 1], remainder)
                                }
                            }
                            _.s[index] = `${_.s[index]}`.padStart(2, '0')
                            break;
                        }
                    // 月
                    case 1:
                        {
                            let t = _.s[index]
                            multiple = parseInt(t / 12)
                            remainder = t % 12
                            if (multiple > 1) {
                                _.s[index - 1] = _.sum(_.s[index - 1], remainder)
                            }
                            _.s[index] = `${_.s[index]}`.padStart(2, '0')
                            break;
                        }
                    // 年
                    case 0:
                        {
                            break;
                        }

                    default:
                        break;
                }
            }
            // console.log(_.formatTimeToChinese(_.s.reverse().join(' ')));
            if (_.flag)
                _.increase()
        }, 1000 / _.speed)
    }
}