如何使用下劃線合并Nodejs中的物件陣列

在我的情況下，我有一個 2 db 查詢，它們是物件，一個回傳所有可能的專案，其中包含一個鍵和名稱欄位，然后另一個是一個具有鍵、名稱和值欄位的物件。我想要做的是合并兩個物件，其中物件 1 是主要物件，物件 2 應該合并到其中。

我理想中想要的是回傳 Data2 中的所有專案，如果資料 1 中沒有資料，則將 value 欄位合并到 data2 和 0 中。奇怪的結果。

僅供參考，我正在使用下劃線

const data1 = [
        {
            "count": 2,
            "key": "c28f7ead-d87b-4ad5-b6b3-1f204b013b50",
            "name": "Notes Written"
        },
        {
            "count": 1,
            "key": "d0181c74-22a9-4f99-9cc9-df3467c51805",
            "name": "Pop-Bys Delivered"
        },
        {
            "count": 2,
            "key": "90d142ea-6748-4781-b2b9-4f05aab12956",
            "name": "Database Additions"
        },
        {
            "count": 1,
            "key": "723e95dd-8c47-48ed-b9c3-1b010b092a1b",
            "name": "Referals Given"
        }
 
    ]

const data2 = [
                    {
                        "key": "8646ec5d-7a72-49bd-9a68-cf326d1c4a14",
                        "name": "Calls Made"
                    },
                    {
                        "key": "c28f7ead-d87b-4ad5-b6b3-1f204b013b50",
                        "name": "Notes Written"
                    },
                    {
                        "key": "d0181c74-22a9-4f99-9cc9-df3467c51805",
                        "name": "Pop-Bys Delivered"
                    },
                    {
                        "key": "90d142ea-6748-4781-b2b9-4f05aab12956",
                        "name": "Database Additions"
                    },
                    {
                        "key": "723e95dd-8c47-48ed-b9c3-1b010b092a1b",
                        "name": "Referals Given"
                    },
                    {
                        "key": "0f054686-ef13-4993-ac5b-f640ceeaaa8d",
                        "name": "Referals Received"
                    }
                ]

 console.log(_.extend( data2, data1 ))

這是一個 Replit 示例示例代碼

uj5u.com熱心網友回復：

• 使用reduce，data1在更新Map鍵計數對時迭代
• 使用each，迭代data2并將 設定為來自地圖value的值key，或者0如果它不存在

const 
  data1 = [ { "count": 2, "key": "c28f7ead-d87b-4ad5-b6b3-1f204b013b50", "name": "Notes Written" }, { "count": 1, "key": "d0181c74-22a9-4f99-9cc9-df3467c51805", "name": "Pop-Bys Delivered" }, { "count": 2, "key": "90d142ea-6748-4781-b2b9-4f05aab12956", "name": "Database Additions" }, { "count": 1, "key": "723e95dd-8c47-48ed-b9c3-1b010b092a1b", "name": "Referals Given" } ],
  data2 = [ { "key": "8646ec5d-7a72-49bd-9a68-cf326d1c4a14", "name": "Calls Made" }, { "key": "c28f7ead-d87b-4ad5-b6b3-1f204b013b50", "name": "Notes Written" }, { "key": "d0181c74-22a9-4f99-9cc9-df3467c51805", "name": "Pop-Bys Delivered" }, { "key": "90d142ea-6748-4781-b2b9-4f05aab12956", "name": "Database Additions" }, { "key": "723e95dd-8c47-48ed-b9c3-1b010b092a1b", "name": "Referals Given" }, { "key": "0f054686-ef13-4993-ac5b-f640ceeaaa8d", "name": "Referals Received" } ];

const map = _.reduce(
  data1, 
  (map, { key, count }) => map.set(key, count),
  new Map
);

_.each(
  data2,
  e => e.value = map.get(e.key) || 0
);

console.log(data2);

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.13.1/underscore-min.js" integrity="sha512-ZuOjyqq409 q6uc49UiBF3fTeyRyP8Qs0Jf/7FxH5LfhqBMzrR5cwbpDA4BgzSo884w6q/ oNdIeHenOqhISGw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

標籤：javascript 节点.js 下划线.js

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