TypeScript中，时间戳转年月日形式显示

    // 时间戳（精确到秒，10位）转为'xx年xx月xx日'
    public timestampToDate(timestamp: number): string
    { 
        const date = new Date(timestamp*1000);
        const year = date.getFullYear();
        const month = date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1;
        const day = date.getDate() < 10 ? '0' + (date.getDate()) : date.getDate();
        const str = `${year}年${month}月${day}日`;

        return str;
    }