时间格式化

常用时间格式化用法

var Time = {
    // 获取当前时间戳
    getUnix: function () {
        var date = new Date();
        return date.getTime();
    },
    // 获取今天0点0分0秒的时间戳
    getTodayUnix: function () {
        var date = new Date();
        date.setHours(0);
        date.setMinutes(0);
        date.setSeconds(0);
        date.setMilliseconds(0);
        return date.getTime();
    },
    // 获取今年1月1日0点0分0秒的时间戳
    getYearUnix: function () {
        var date = new Date();
        date.setMonth(0);
        date.setDate(1);
        date.setHours(0);
        date.setMinutes(0);
        date.setSeconds(0);
        date.setMilliseconds(0);
        return date.getTime();
    },
    // 获取标准年月日
    getLastDate: function(time) {
        var date = new Date(time);
        var month = date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1;
        var day = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
        return date.getFullYear() + '-' + month + "-" + day;
    },
    // 转换时间
    getFormatTime: function(timestamp) {
        var now = this.getUnix();    //当前时间戳
        var today = this.getTodayUnix(); //今天0点时间戳
        var year = this.getYearUnix();   //今年0点时间戳
        var timer = (now - timestamp) / 1000;   // 转换为秒级时间戳
        var 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/86400 <= 31) {
            tip = Math.ceil(timer/86400) + '天前';
        } else {
            tip = this.getLastDate(timestamp);
        }
        return tip;
    }
};

// 获取今天时间戳
getTodayTime = function () {
    const date = new Date();
    date.setHours(0);
    date.setMinutes(0);
    date.setSeconds(0);
    date.setMilliseconds(0);
    return date.getTime();
};

// 获取上一天日期
prevDay = function (timestamp = (new Date()).getTime()) {
    const date = new Date(timestamp);
    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();
    return year + '' + month + '' + day;
};

function ago(time: Date) {
  const date3 = new Date().getTime() - new Date(time).getTime();
  const days = Math.floor(date3 / (24 * 3600 * 1000));

  // 计算出小时数
  const leave1 = date3 % (24 * 3600 * 1000); // 计算天数后剩余的毫秒数
  const hours = Math.floor(leave1 / (3600 * 1000));
  // 计算相差分钟数
  const leave2 = leave1 % (3600 * 1000); // 计算小时数后剩余的毫秒数
  const minutes = Math.floor(leave2 / (60 * 1000));
  // 计算相差秒数
  const leave3 = leave2 % (60 * 1000); // 计算分钟数后剩余的毫秒数
  const seconds = Math.round(leave3 / 1000);
  // alert(" 相差 " + days + "天 " + hours + "小时 " + minutes + " 分钟" + seconds + " 秒")
  if (days !== 0) {
    if (days > 365) {
      return `${Math.floor(days / 365)}年前`;
    } else if (days > 30) {
      return `${Math.floor(days / 30)}月前`;
    } else if (days < 0) {
      return "刚刚";
    }

    return `${days}天前`;
  } else if (hours !== 0) {
    return `${hours}小时前`;
  } else if (minutes !== 0) {
    return `${minutes}分钟前`;
  } else if (seconds !== 0) {
    return `${seconds}秒前`;
  } else if (seconds === 0) {
    return "刚刚";
  }
}