意外的Javascript包含拆分和空数组过滤器输出

问题描述：

我正在尝试过滤ID数组中存在ID值结果的数组。

i'm trying to filter array that the results of value id exist in array of id.

此处的数据变量：

var data = [
    {
        "transaksi": [
            {
                "_id": "5acb747c9c2be225d995a8f1",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 50000,
                "kirim": 1,
                "pembelian": "5acb747c9c2be225d995a8f9"
            },
            {
                "_id": "5acb7a6a305ef72b7d542900",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 50000,
                "kirim": 1,
                "pembelian": "5acb7a6a305ef72b7d542908"
            }
        ],
        "_id": "5acb74239c2be225d995a8ee",
        "nama_produk": "Susu"
    },
    {
        "transaksi": [
            {
                "_id": "5acb747c9c2be225d995a8f2",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 20000,
                "kirim": 1,
                "pembelian": "5acb747c9c2be225d995a8f9"
            },
            {
                "_id": "5acb7a6a305ef72b7d542901",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 20000,
                "kirim": 1,
                "pembelian": "5acb7a6a305ef72b7d542908"
            }
        ],
        "_id": "5acb74279c2be225d995a8ef",
        "nama_produk": "Remot Tv"
    }
  ]

选定的ID变量：

var ids = [
"5acb747c9c2be225d995a8f1",
"5acb747c9c2be225d995a8f2"
]

过滤器功能：

var filter = function(){
  for (id of ids){
    for (dataTransaksi of data){
        console.log(dataTransaksi.transaksi.filter(transaksi => {
        return transaksi._id == id
        }))
    }
  }
}
filter()

预期结果：

[
    {
        "transaksi": [
            {
                "_id": "5acb747c9c2be225d995a8f1",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 50000,
                "kirim": 1,
                "pembelian": "5acb747c9c2be225d995a8f9"
            }
          ]
    },
    {
        "transaksi": [
            {
                "_id": "5acb747c9c2be225d995a8f2",
                "sebelum_jumlah_sortir": 1,
                "harga_produk": 20000,
                "kirim": 1,
                "pembelian": "5acb747c9c2be225d995a8f9"
            }
          ]
    }
 ]

实际结果包括空的和分割的：

an actual result include empty and splitted:

谢谢。

答

您可以使用。 filter（）与 Object.assign（）像这样：

演示：

let data = [{"transaksi": [{"_id": "5acb747c9c2be225d995a8f1", "sebelum_jumlah_sortir": 1, "harga_produk": 50000,"kirim": 1,"pembelian": "5acb747c9c2be225d995a8f9"}, { "_id": "5acb7a6a305ef72b7d542900", "sebelum_jumlah_sortir": 1,"harga_produk": 50000,"kirim": 1,"pembelian": "5acb7a6a305ef72b7d542908"}], "_id": "5acb74239c2be225d995a8ee", "nama_produk": "Susu"},{ "transaksi": [{"_id": "5acb747c9c2be225d995a8f2", "sebelum_jumlah_sortir": 1,"harga_produk": 20000, "kirim": 1,"pembelian": "5acb747c9c2be225d995a8f9"},{"_id": "5acb7a6a305ef72b7d542901","sebelum_jumlah_sortir": 1,"harga_produk": 20000,"kirim": 1, "pembelian": "5acb7a6a305ef72b7d542908"}], "_id": "5acb74279c2be225d995a8ef", "nama_produk": "Remot Tv"}],
    ids = ["5acb747c9c2be225d995a8f1", "5acb747c9c2be225d995a8f2"];

let result = data.map(
  o => Object.assign(
    {}, o, {"transaksi": o["transaksi"].filter(o => ids.includes(o["_id"]))}
  )
);

console.log(result);

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意外的Javascript包含拆分和空数组过滤器输出

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