Save unique pairs of keys and values in an array

Question

Save unique pairs of keys and values in an array

I'm faced with extracting specific keys and values from a JSON data that contains a variety of information. Here's the snippet of the JSON data:

    "projectID": 1,
    "projectName": "XXX",
    "price": 0.2,
    "regStart":{
        "$date": "2021-12-15T16:00:00.00Z"
    },
    "regEnd":{
        "$date": "2021-12-18T16:00:00.00Z"
    },
    "saleStart":{
        "$date": "2021-12-20T20:00:00.00Z"
    },
    "saleEnd":{
        "$date": "2021-12-15T20:00:00.00Z"
    },
    "totalRaise": 200000,
    "totalSale": 50000,
    "projectStatus": "Ongoing",

My goal is to extract and store only projectID, projectName, and price. However, I'm unsure how to iterate through this data and save it to my empty object.

    let result = []
    for(let i=0;i<data.length;i++){
      let tempRes = {}
      // ...no idea how to do it
      result.push(tempRes);
    }

javascript json

Answer 1

Answer №1

const information = {"projectID": 1,
    "projectName": "CompanyABC",
    "price": 0.2,
    "regStart":{
        "$date": "2021-12-15T16:00:00.00Z"
    },
    "regEnd":{
        "$date": "2021-12-18T16:00:00.00Z"
    },
    "saleStart":{
        "$date": "2021-12-20T20:00:00.00Z"
    },
    "saleEnd":{
        "$date": "2021-12-15T20:00:00.00Z"
    },
    "totalRaise": 200000,
    "totalSale": 50000,
    "projectStatus": "Ongoing"}

const selectedInfo = {};


    Object.keys(information).forEach(key=>{
            if(['projectID','projectName','price'].includes(key)) {   // you can customize this as needed
            selectedInfo[key] = information[key];
    }

});


console.log(selectedInfo);

Answer 2

const information = {"projectID": 1,
    "projectName": "CompanyABC",
    "price": 0.2,
    "regStart":{
        "$date": "2021-12-15T16:00:00.00Z"
    },
    "regEnd":{
        "$date": "2021-12-18T16:00:00.00Z"
    },
    "saleStart":{
        "$date": "2021-12-20T20:00:00.00Z"
    },
    "saleEnd":{
        "$date": "2021-12-15T20:00:00.00Z"
    },
    "totalRaise": 200000,
    "totalSale": 50000,
    "projectStatus": "Ongoing"}

const selectedInfo = {};


    Object.keys(information).forEach(key=>{
            if(['projectID','projectName','price'].includes(key)) {   // you can customize this as needed
            selectedInfo[key] = information[key];
    }

});


console.log(selectedInfo);

Answer 3

Answer №2

To access the property, you can use dot notation. For instance:

var info = {
  "userID": 1,
  "username": "JohnDoe",
  "email": "johndoe@example.com",
  "joinedDate": {
    "$date": "2022-01-01T00:00:00.00Z"
  },
  "lastLogin": {
    "$date": "2022-01-15T12:00:00.00Z"
  }
}

var userDetails = {userID: info.userID, username: info.username, email: info.email}

console.log(userDetails)

Answer 4

To access the property, you can use dot notation. For instance:

var info = {
  "userID": 1,
  "username": "JohnDoe",
  "email": "johndoe@example.com",
  "joinedDate": {
    "$date": "2022-01-01T00:00:00.00Z"
  },
  "lastLogin": {
    "$date": "2022-01-15T12:00:00.00Z"
  }
}

var userDetails = {userID: info.userID, username: info.username, email: info.email}

console.log(userDetails)

Answer 5

Answer №3

I wanted to share a useful function that I created some time ago.

function removeKeys(obj, keys, deepClone = true) {
  const cloneObject = deepClone ? obj : JSON.parse(JSON.stringify(obj));
  keys.forEach((key) => {
    if (Object.hasOwnProperty.call(cloneObject, key)) {
      delete cloneObject[key];
    }
  })

  return cloneObject;
}

You can use it in your specific case like this:

const newPayload = removeKeys(data, ['regStart', 'regEnd', 'saleStart', 'saleEnd', 'totalRaise', 'totalSale', 'projectStatus'], false);

See it in action here: JSFiddle

Answer 6

I wanted to share a useful function that I created some time ago.

function removeKeys(obj, keys, deepClone = true) {
  const cloneObject = deepClone ? obj : JSON.parse(JSON.stringify(obj));
  keys.forEach((key) => {
    if (Object.hasOwnProperty.call(cloneObject, key)) {
      delete cloneObject[key];
    }
  })

  return cloneObject;
}

You can use it in your specific case like this:

const newPayload = removeKeys(data, ['regStart', 'regEnd', 'saleStart', 'saleEnd', 'totalRaise', 'totalSale', 'projectStatus'], false);

See it in action here: JSFiddle

Save unique pairs of keys and values in an array

Answer №1

Answer №2

Answer №3

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