var currentY = new Date().getFullYear();
            var currentM = new Date().getMonth() + 1;
            var lastDay = new Date(currentY, currentM, 0).getDate();
            let start = `${currentY}-${currentM}-01`
            let end = `${currentY}-${currentM}-${lastDay}`

得到2022-11-01和2022-11-30     lastDay为获取到最后一天