数组对象排序，先根据某个属性排序，然后再此基础上根据另外一个属性值排序，不会打乱第一个排序【先根据年份，再根据月份】

// 排序，先进行某个对象属性排序，然后在此基础上进行另一个属性排序[先按年份，再按月份]
export function multisort(array, ...compairers) {
    return array.sort((a, b) => {
        for (const c of compairers) {
            const r = c(a, b);
            if (r !== 0) {
                return r;
            }
        }
    });
}

var aee = [
{"key":{"Year":2019,"Month":1},"sum":1},
{"key":{"Year":2018,"Month":1},"sum":2},
{"key":{"Year":2019,"Month":6},"sum":1},
{"key":{"Year":2018,"Month":4},"sum":1},
{"key":{"Year":2019,"Month":2},"sum":2}
]
console.log(aee);
function multisort(array, ...compairers) {
    return array.sort((a, b) => {
        for (const c of compairers) {
            const r = c(a, b);
            if (r !== 0) {
                return r;
            }
        }
    });
}
multisort(aee,(a, b) => b.key.Year - a.key.Year,
    (a, b) => b.key.Month - a.key.Month)
// 
结果

[{"key":{"Year":2019,"Month":6},"sum":1},
{"key":{"Year":2019,"Month":2},"sum":2},
{"key":{"Year":2019,"Month":1},"sum":1},
{"key":{"Year":2018,"Month":4},"sum":1},
{"key":{"Year":2018,"Month":1},"sum":2}]