如何从数组中获取匹配元素并更改数组对象？

Question

如果数组具有匹配的ID，则将对象更改为一个对象，而不用下面的代码影响原始数组，则它仅返回匹配的对象，但我希望得到如上所述的预期结果

main.ts

const arr = [{
            "body": {
                "specialtyID": "7114798",
                "sourceSystem": "HBS",
                "rxInfos": [{
                    "drugNdc": "00445450085",
                    "rxNumber": "14678904"
                }]

            },
            {
                "body": {
                    "specialtyID": "7114798",
                    "sourceSystem": "HBS",
                    "rxInfos": [{
                        "drugNdc": "00004080085",
                        "rxNumber": "1459004"
                    }]
                }
            },
            {
                "body": {
                    "specialtyID": "7908398",
                    "sourceSystem": "HBS",
                    "rxInfos": [{
                        "drugNdc": "06789955085",
                        "rxNumber": "1478604"
                    }]
                }
            }

        ]


        const tempArray = arr;

        function arrayMatch(temp, arr) {
            const finalArray = [];
            arr.forEach((element) => {
                    tempArray.forEach((temp) => {
                            if (temp.speicaltyID === element.specialtyID) {
                                temp.rxInfos.forEach((rxInfo) => {
                                    element.rxInfos.push(rxInfo);
                                });
                            }
                        }
                        finalArray = arr;

                    });
                return finalArray

            }

预期输出

 const arr = [{
                        "body": {
                            "specialtyID": "7114798",
                            "sourceSystem": "HBS",
                            "rxInfos": [{
                                    "drugNdc": "00445450085",
                                    "rxNumber": "14678904"
                                },
                                {
                                    "drugNdc": "00004080085",
                                    "rxNumber": "1459004"
                                }
                            ]
                        },
                        {
                            "body": {
                                "specialtyID": "7908398",
                                "sourceSystem": "HBS",
                                "rxInfos": [{
                                    "drugNdc": "06789955085",
                                    "rxNumber": "1478604"
                                }]
                            }
                        }

                    ]

Answer 1

您可以尝试使用此方法来获得所需的结果：

const result = arr.reduce((container, value) => {
    const compare     = ({ body }) => body.specialtyID === value.body.specialtyID;
    const isExists    = container.some(compare);
    const pushRxInfos = container.map(item => compare(item) ? item.body.rxInfos.push(...value.body.rxInfos) : item);

    isExists ? pushRxInfos : container.push(value);

    return container;
}, []);