当前日期后的后几天

onLoad: function (options) {
    var that = this;

    var oDate = new Date();   
    var dayArr = [];     
    for (var i = 0; i < 7; i++) {/*后7天*/
      dayArr.push(new Date(oDate.getFullYear(), oDate.getMonth(), oDate.getDate() + i));  
    }

    var date=[];

    for (var j = 0; j < dayArr.length;j++){
      date[j]={};  
      date[j].day = that.filterMonth(dayArr[j].getDate());
      date[j].month = that.filterMonth(dayArr[j].getMonth()+1);
      date[j].week = that.week(j, dayArr[j].getDay());
      date[j].simweek = that.simweek(dayArr[j].getDay());

    }
  
    console.log(date)
    that.setData({ date: date})

  },
  simweek: function (week){
    var weekDaay = ['日', '一', '二', '三', '四', '五', '六'];
    switch (week) {
      case 0:
        return weekDaay[week];
        break;
      case 1:
        return weekDaay[week];
        break;
      case 2:
        return weekDaay[week];
        break;
      case 3:
        return weekDaay[week];
        break;
      case 4:
        return weekDaay[week];
        break;
      case 5:
        return weekDaay[week];
        break;
      case 6:
        return weekDaay[week];
        break;
    }
  },
  week:function(j,week){
    var weekDaay = ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六'];
    switch (j) {
      case 0:
        return '今天';
        break;
      case 1:
        return '明天';
        break;
      case 2:
        return '后天';
        break;
      case 3:
        return weekDaay[week];
        break;
      case 4:
        return weekDaay[week];
        break;
      case 5:
        return weekDaay[week];
        break;
      case 6:
        return weekDaay[week];
        break;
    }
  },
  filterMonth:function(m){
    if(m<10){
      return '0'+m
    }else{
      return m;
    }
  },