Question 296633 in Javascript Question posted in
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Javascript – Trying to check if key present in array of objects inside of an array of objects

I need a way to return true or false if in changeFields array "printLogs" key is present or not. The object is shown below. I have tried looping but somehow cant get my head to wrap around it.

const printObj = [
  {
    _id: "656a69e14",
    document: { _id: "65b891" },
    user: "654cfbba3ea455b55b057195",
    changeFields: [
      {
        change: "update",
        quantity: [
          2,
          3,
          "2023 1 Oz Silver Maple Leaf Coin - Royal Canadian Mint",
        ],
      },
      { change: "update", subTotal: ["77.88", "116.82"] },
      { change: "update", totalAmount: ["107.88", "146.82"] },
    ],
    createdAt: "2023-12-01T19:10:54.575Z",
    updatedAt: "2023-12-01T19:10:54.575Z",
    __v: 0,
  },
  {
    _id: "65e0e",
    document: { _id: "651" },
    user: "",
    changeFields: [{ printLogs: "An order has been printed" }],
    createdAt: "",
    updatedAt: "",
    __v: 0,
  },
{},

]

I have tried javascript in built functions. The below worked to some degree but I need to return true or false if printLogs is present in changeFields.

const value = printObj.filter(function (x) {
  x.changeFields.filter(function (o) {
    console.log(o, o.hasOwnProperty("printLogs"));
  });
});
Tags:

2

Answers


  1. 0

    I add code below.

    const printObj = [
  {
    _id: "656a69e14",
    document: { _id: "65b891" },
    user: "654cfbba3ea455b55b057195",
    changeFields: [
      {
        change: "update",
        quantity: [
          2,
          3,
          "2023 1 Oz Silver Maple Leaf Coin - Royal Canadian Mint",
        ],
      },
      { change: "update", subTotal: ["77.88", "116.82"] },
      { change: "update", totalAmount: ["107.88", "146.82"] },
    ],
    createdAt: "2023-12-01T19:10:54.575Z",
    updatedAt: "2023-12-01T19:10:54.575Z",
    __v: 0,
  },
  {
    _id: "65e0e",
    document: { _id: "651" },
    user: "",
    changeFields: [{ printLogs: "An order has been printed" }],
    createdAt: "",
    updatedAt: "",
    __v: 0,
  },
  {},
];

const result = printObj.map(
  (obj) =>
    !!obj.changeFields?.filter(
      (item) => Object.keys(item).indexOf("printLogs") !== -1
    ).length
);

console.log(result);
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  2. 0

    One way would be to loop thru the array using array.some to check if the key exists. Here is an example:

    const printObj = [
  {
    _id: "656a69e14",
    document: { _id: "65b891" },
    user: "654cfbba3ea455b55b057195",
    changeFields: [
      {
        change: "update",
        quantity: [
          2,
          3,
          "2023 1 Oz Silver Maple Leaf Coin - Royal Canadian Mint",
        ],
      },
      { change: "update", subTotal: ["77.88", "116.82"] },
      { change: "update", totalAmount: ["107.88", "146.82"] },
    ],
    createdAt: "2023-12-01T19:10:54.575Z",
    updatedAt: "2023-12-01T19:10:54.575Z",
    __v: 0,
  },
  {
    _id: "65e0e",
    document: { _id: "651" },
    user: "",
    changeFields: [{ printLogs: "An order has been printed" }],
    createdAt: "",
    updatedAt: "",
    __v: 0,
  },
  {},
];

const result = printObj.some((o) => o.changeFields?.some((f) => f.printLogs) ?? false)

console.log(result)
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