获取本周的开始时间

 getCurrentWeekStartTime: function (format) {
      var nowTemp = new Date(), //当前时间
        cTime = nowTemp.getTime(), //当前时间的毫秒时间
        cDay = nowTemp.getDay() || 7, //当前时间的星期几
        mTime = cTime - (cDay - 1) * 24 * 60 * 60 * 1000, //当前周一的毫秒时间
        monday = new Date(mTime), //设置周一时间对象
        mYear = monday.getFullYear(),
        mMonth = monday.getMonth() + 1,
        mDate = monday.getDate();

      if (mMonth < 10) {
        mMonth = "0" + mMonth;
      }
      if (mDate < 10) {
        mDate = "0" + mDate;
      }
      return mYear + '-' + mMonth + '-' + mDate;
    },