今天有一阵列var full = [{month: "2019/10",ind: "TSWE",exp: 11,},{month: "2019/10",ind: "MSCI",exp: 12,},{month: "2019/11",ind: "TSWE",exp: 13,},{month: "2019/11",ind: "MSCI",exp: 14,},{month: "2019/12",ind: "TSWE",exp: 15,},{month: "2019/12",ind: "MSCI",exp: 16,},]我觉得按照日期把里边的exp做求和的姿势，并存储在新列阵我想问一下怎样做 感谢比如 2019/10 >> 11 12 = 23