until.service.ts

export class UntilService {
    constructor(){}

    /** 产生一个随机的32位长度字符串 */
    static uuid() {
        let text = '';
        const possible = 'abcdef0123456789';
        for (let i = 0; i < 19; i++) {
            text += possible.charAt(Math.floor(Math.random() * possible.length));
        }
        return text + new Date().getTime();
    }
    /**
     * 日期对象转为日期字符串
     * @param date 需要格式化的日期对象
     * @param sFormat 输出格式,默认为yyyy-MM-dd                        年：y，月：M，日：d，时：h，分：m，秒：s
     * @example  dateFormat(new Date())                               "2017-02-28"
     * @example  dateFormat(new Date(),'yyyy-MM-dd')                  "2017-02-28"
     * @example  dateFormat(new Date(),'yyyy-MM-dd HH:mm:ss')         "2017-02-28 13:24:00"   ps:HH:24小时制
     * @example  dateFormat(new Date(),'yyyy-MM-dd hh:mm:ss')         "2017-02-28 01:24:00"   ps:hh:12小时制
     * @example  dateFormat(new Date(),'hh:mm')                       "09:24"
     * @example  dateFormat(new Date(),'yyyy-MM-ddTHH:mm:ss+08:00')   "2017-02-28T13:24:00+08:00"
     * @example  dateFormat(new Date('2017-02-28 13:24:00'),'yyyy-MM-ddTHH:mm:ss+08:00')   "2017-02-28T13:24:00+08:00"
     * @returns {string}
     */
     dateFormat(date: Date, sFormat: String = 'yyyy-MM-dd'): string {
        let time = {
            Year: 0,
            TYear: '0',
            Month: 0,
            TMonth: '0',
            Day: 0,
            TDay: '0',
            Hour: 0,
            THour: '0',
            hour: 0,
            Thour: '0',
            Minute: 0,
            TMinute: '0',
            Second: 0,
            TSecond: '0',
            Millisecond: 0
        };
        time.Year = date.getFullYear();
        time.TYear = String(time.Year).substr(2);
        time.Month = date.getMonth() + 1;
        time.TMonth = time.Month < 10 ? "0" + time.Month : String(time.Month);
        time.Day = date.getDate();
        time.TDay = time.Day < 10 ? "0" + time.Day : String(time.Day);
        time.Hour = date.getHours();
        time.THour = time.Hour < 10 ? "0" + time.Hour : String(time.Hour);
        time.hour = time.Hour < 13 ? time.Hour : time.Hour - 12;
        time.Thour = time.hour < 10 ? "0" + time.hour : String(time.hour);
        time.Minute = date.getMinutes();
        time.TMinute = time.Minute < 10 ? "0" + time.Minute : String(time.Minute);
        time.Second = date.getSeconds();
        time.TSecond = time.Second < 10 ? "0" + time.Second : String(time.Second);
        time.Millisecond = date.getMilliseconds();

        return sFormat.replace(/yyyy/ig, String(time.Year))
            .replace(/yyy/ig, String(time.Year))
            .replace(/yy/ig, time.TYear)
            .replace(/y/ig, time.TYear)
            .replace(/MM/g, time.TMonth)
            .replace(/M/g, String(time.Month))
            .replace(/dd/ig, time.TDay)
            .replace(/d/ig, String(time.Day))
            .replace(/HH/g, time.THour)
            .replace(/H/g, String(time.Hour))
            .replace(/hh/g, time.Thour)
            .replace(/h/g, String(time.hour))
            .replace(/mm/g, time.TMinute)
            .replace(/m/g, String(time.Minute))
            .replace(/ss/ig, time.TSecond)
            .replace(/s/ig, String(time.Second))
            .replace(/fff/ig, String(time.Millisecond))
    }}