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将毫秒数转换为年月日，过滤器，

filters: {    filterTime(val) {      let date = new Date();      date.setTime(val);      	//getTime() 返回从 1970 年 1 月 1 日至今的毫秒数。      		//获取年月日时分秒      let y = date.getFullYear();      let m = date.getMonth() + 1;      let d = date.getDate();      let h = date.getHours();      let mm = date.getMinutes();      let s = date.getSeconds();	//``是转换  let一个值将上面的值转化为相应的时间      let str = `${y}年${m}月${d}日${h}:${mm}:${s}`;      return str;    },

时间转换的为时间段，例如：一分钟之前半小时之前

filterTime2(old) {      let date = new Date();      let news = date.getTime();      let now = news - old;    //   console.log(old);      let str = "";      if (now > 0 && now < 1000 * 60) {        str = "刚刚";      } else if (now >= 1000 * 60 && now < 1000 * 60 * 2) {        str = "1分钟前";      } else if (now >= 1000 * 60 * 2 && now < 1000 * 60 * 3) {        str = "2分钟前";      } else if (now >= 1000 * 60 * 2 && now < 1000 * 60 * 9) {        str = "8分钟前";      } else {        str = "很久以前";      }      return str;    }

天数之间的转换

filterTime(val) {      let date = new Date();      let news = date.getTime() / 1000;      let now = (news - val) / 60; //单位转换为分钟      let str = "";      if (now <= 10) {        str = "十分钟前";      } else if (now <= 30) {        str = "半小时之前";      } else if (now <= 60) {        str = "一小时之前";      } else if (now <= 60 * 2) {        str = "两个小时之前";      } else if (now <= 60 * 24) {        str = "一天前";      }else{        str="很久之前"      }      return str;    }

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