日期前一天前一周前一个月

  num(s) {

      return s < 10 ? "0" + s : s;

    },

    day() {

      let day = new Date();

      day.setTime(day.getTime() - 24 * 60 * 60 * 1000);

      let dayOld =

        day.getFullYear() +

        "-" +

        this.num(day.getMonth() + 1) +

        "-" +

        this.num(day.getDate());

      this.staday = dayOld + " " + "00:00:00";

      this.endday = dayOld + " " + "24:00:00";

      this.dayFalse = "1";

    },

    week() {

      let nowdate = new Date();

      nowdate.setTime(nowdate.getTime());

      var dayDate =

        nowdate.getFullYear() +

        "-" +

        this.num(nowdate.getMonth() + 1) +

        "-" +

        this.num(nowdate.getDate());

      let week = new Date(nowdate - 6 * 24 * 3600 * 1000);

      let y = week.getFullYear();

      let m = week.getMonth() + 1;

      let d = week.getDate();

      let formatwdate = y + "-" + this.num(m) + "-" + this.num(d);

      this.staweek = formatwdate + " " + "00:00:00";

      this.endweek = dayDate + " " + "24:00:00";

      // console.log(this.staweek, this.endweek);

      this.dayFalse = "2";

      this.search();

    },

    month() {

      let nowdate = new Date();

      nowdate.setMonth(nowdate.getMonth());

      let y = nowdate.getFullYear();

      let m = nowdate.getMonth() + 1;

      let d = nowdate.getDate();

      let month = y + "-" + this.num(m) + "-" + this.num(d);

      this.endmonth = month + " " + "24:00:00";

      this.stamonth = DateDay(nowdate) + " " + "00:00:00";

      this.dayFalse = "3";

    },

    nowMonth() {

      var now = new Date(); //当前日期

      now.setTime(now.getTime());

      var getnowMonthEndDate =

        now.getFullYear() +

        "-" +

        this.num(now.getMonth() + 1) +

        "-" +

        this.num(now.getDate());

      var nowMonth = now.getMonth(); //当前月

      var nowYear = now.getYear(); //当前年

      nowYear += nowYear < 2000 ? 1900 : 0; //

      var monthStartDate = new Date(nowYear, nowMonth, 1);

      var getnowMonthStartDate = this.newformatDate(monthStartDate);

      this.dayFalse = "2";

      this.nowSta = getnowMonthStartDate + " " + "00:00:00";

      this.nowEnd = getnowMonthEndDate + " " + "24:00:00";

      // console.log(this.nowSta, this.nowEnd);

      this.search();

    },

    getMonthDays(myMonth) {

      var now = new Date(); //当前日期

      var nowYear = now.getYear(); //当前年

      nowYear += nowYear < 2000 ? 1900 : 0;

      var monthStartDate = new Date(nowYear, myMonth, 1);

      var monthEndDate = new Date(nowYear, myMonth + 1, 1);

      var days = (monthEndDate - monthStartDate) / (1000 * 60 * 60 * 24);

      return days;

    },

    newformatDate(date) {

      var myyear = date.getFullYear();

      var mymonth = date.getMonth() + 1;

      var myweekday = date.getDate();

      if (mymonth < 10) {

        mymonth = "0" + mymonth;

      }

      if (myweekday < 10) {

        myweekday = "0" + myweekday;

      }

      return myyear + "-" + mymonth + "-" + myweekday;

    },

    oldMonth() {

      var now = new Date(); //当前日期

      var nowMonth = now.getMonth(); //当前月

      var nowYear = now.getYear(); //当前年

      nowYear += nowYear < 2000 ? 1900 : 0; //

      var lastMonthDate = new Date(); //上月日期

      lastMonthDate.setDate(1);

      lastMonthDate.setMonth(lastMonthDate.getMonth() - 1);

      var lastYear = lastMonthDate.getYear();

      var lastMonth = lastMonthDate.getMonth();

      var getLastMonthStartDate = new Date(nowYear, lastMonth, 1);

      var getLastMonthStartDate = this.newformatDate(getLastMonthStartDate);

      // console.log("上月开始时间" + getLastMonthStartDate);

      //获得上月结束时间

      var getLastMonthEndDate = new Date(

        nowYear,

        lastMonth,

        this.getMonthDays(lastMonth)

      );

      var getLastMonthEndDate = this.newformatDate(getLastMonthEndDate);

      // console.log("上月结束时间" + getLastMonthEndDate);

      this.dayFalse = "1";

      this.oldSta = getLastMonthStartDate + " " + "00:00:00";

      this.oldEnd = getLastMonthEndDate + " " + "24:00:00";

      this.search();

    },