JS 常用时间处理函数

class Time { constructor() {

}

//获取当前时间戳
getUnix() {
    let date = new Date();
    return date.getTime()
}

// 获取今天0点0分0秒的时间戳
getTodayUnix() {
    let date = new Date();
    date.setHours(0);
    date.setMinutes(0);
    date.setSeconds(0);
    date.setMilliseconds(0);
    return date.getTime();
}

// 获取今年一月一日0点0分0秒的时间戳
getYearUnix() {
    let date = new Date();
    date.setMonth(0);
    date.setDate(1);
    date.setHours(0);
    date.setMinutes(0);
    date.setSeconds(0);
    date.setMilliseconds(0);
    return date.getTime();
}

// 获取标准的年月日
getLastDate(time) {
    let date = new Date(time);
    let month = date.getMonth() + 1 < 10 ?
        '0' + (date.getMonth() + 1) : date.getMonth() + 1;
    let day = date.getDate() < 10 ?
        "0" + date.getDate() : date.getDate();
    return date.getFullYear() + '-' + month + '-' + day;
}

// 转化时间
getFormatTime(timestamp) {
    let now = this.getUnix();
    let today = this.getTodayUnix();
    let year = this.getYearUnix();
    let timer = (now - timestamp) / 1000; //转化为秒级时间戳
    let tip = '';

    if (timer <= 0) {
        tip = '刚刚';
    } else if (Math.floor(timer / 60) <= 0) {
        tip = '刚刚'
    } else if (timer < 3600) {
        tip = Math.floor(timer / 60) + '分钟前';
    } else if (timer >= 3600 && (timestamp - today >= 0)) {
        tip = Math.floor(timer / 3600) + '小时前';
    } else if (timer / 84600 <= 31) {
        tip = Math.ceil(timer / 86400) + '天前';
    } else {
        tip = this.getLastDate(timestamp);
    }
    return tip;
}

}

export default Time