使用GTE和LTE在猫鼬中进行日期比较

Question

添加大于和小于日期，表示此方法可以很好地获得不合适的结果

//Fetching the Date     
          var date = new Date(), y = date.getFullYear(), m = date.getMonth(); //Storing Date in Variable
            var firstDay = new Date(y, m, 1);
             var lastDay = new Date(y, m + 1, 0);
     //The Query for Comparison
             var query = Feedback.find( {createdOn : {"$gte": firstDay , "$lt": lastDay}})