数字 日期 格式化方法

/**
 * Created By xuzhaohui on 2017/2/10
 *
 * Vue全局过滤器
 *
 */

import Vue from 'vue';

/**
 * 数字格式化，超过亿以亿为单位（保留1位小数点），超过万以万为单位（保留1位小数点），其它正常显示
 */
Vue.filter('numUnit', (value) => {
    let num = parseInt(value);

    if(num>100000000)
        num = (Math.ceil(num/1000000)/100).toFixed(1) + '亿';
    else if(num>10000){
        num = (Math.ceil(num/100)/100).toFixed(1) + '万';
    }else{
        num = num;
    }

    return num;
});

/**
 * 浏览量格式化
 * 以万或亿为单位显示浏览量，小数点后精确两位
 * 例如：1.21万
 */
Vue.filter('viewNumber',(value) => {
    let num = parseInt(value);
    if(num>100000000)
        return Math.ceil(num/1000000)/100 + '亿';
    else if(num>10000){
        return Math.ceil(num/100)/100 + '万';
    }else{
        return num;
    }
});


/**
 * 时间戳转化例如：12:23
 * 时间秒转化时+分
 */
 Vue.filter('secondFormat', (value) => {
    let date = new Date(value),
        h    = date.getHours(),
        s    = date.getMinutes();

    h = h<10?'0'+h.toString():h;
    s = s<10?'0'+s.toString():s;

    return h+':'+s
 });

 /**
 * 显示时间过滤器：秒数转化时分秒显示
 * @DateTime 2016-12-14
 */
Vue.filter('show-time', (value) => {
    let h = Math.floor(value/3600)%24,
        m = Math.floor(value/60)%60,
        s = Math.floor(value)%60;
    h  = h<10 ?'0'+h:h;
    m  = m<10 ?'0'+m:m;
    s  = s<10 ?'0'+s:s;
    return h+':'+m+':'+s;
});

/**
 * 过去时间过滤器：当时间格式为“时间戳”时
 * @DateTime 2017-04-24
 */
 Vue.filter('pass-timestamp', (value) => {
    let now = new Date().getTime(),
        diffValue = now - value;

    let month = diffValue / (1000*60*60*24*7*30),
        week  = diffValue / (1000*60*60*24*7),
        date  = diffValue / (1000*60*60*24),
        hour  = diffValue / (1000*60*60),
        min   = diffValue / (1000*60);
    if (month >= 1) {
        return parseInt(month) + "个月前";
    } else if (week >= 1) {
        return parseInt(week) + "周前";
    } else if (date >= 1) {
        return parseInt(date) + "天前";
    } else if (hour >= 1) {
        return parseInt(hour) + "小时前";
    } else if (min >= 1) {
        return parseInt(min) + "分钟前";
    } else
        return  "刚刚发表";
});
 /**
 * 时间过滤器：当时间格式为“时间戳”时转化为例：2017-01-01
 * @DateTime 2017-05-09
 */
 Vue.filter('show-date', (value) => {
    let date = new Date(value),

        year = date.getFullYear(),
        month= date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1,
        data = date.getDate() < 10 ? '0'+date.getDate() : date.getDate();
    return year+'-'+month+'-'+data;
 });
 /**
 * 编码转换
 * 服务器端传过来的富文本数据格式需要转换
 */
Vue.filter('decode',(value) => {
    let re = value+'';
    let exp = {
        '&amp;':'&',
        '&lt;':'<',
        '&gt;':'>',
        '&quot;':'"',
        '&nbsp;':' ',
        '&ldquo;':'“',
        '&rdquo;':'”'
    };
    for(var item in exp)
        re = re.replace(new RegExp(item,'g'),exp[item]);
    return re;
});
/*过去时间过滤器，当前时间格式为"2017-01-01"*/
Vue.filter('time-format',(value) => {
    let now = new Date().getTime(),
      oldTime = new Date(value.replace(new RegExp("-","gm"),"/")).getTime(),
      difference = now - oldTime,
      result = '',

      _year = difference/(1000*60*60*24*30*12),
      _month =difference/(1000*60*60*24*30),
      _week =difference/(1000*60*60*24*7),
      _day =difference/(1000*60*60*24),
      _hour =difference/(1000*60*60),
      _min =difference/(1000*60);

      if (_year>=1) {
        return parseInt(_year) + "年前"
      } else if(_month>=1) {
        return parseInt(_month) + "个月前"
      } else if(_week>=1) {
        return parseInt(_week) + "周前"
      } else if(_day>=1) {
        return parseInt(_day) +" 天前"
      } else if(_hour>=1) {
        return parseInt(_hour) +"小时前"
      } else if(_min>=1) {
        return parseInt(_min) +"分钟前"
      } else {
        return "刚刚发表"
      }
})