match value from object to another array in js

Question

Hello i have an array object i have to find values from object with match array keys below is array and object i tried but not getting the result

var filterkey = [a,b,c];
var palistarray = [{
{
            "Id": 199,
            "a": "Rajesh Tamore",
            "b": "23/11/2022",
            "c": "23/11/2022",
            "d": "W"
        },
        {
            "Id": 200,
            "a": "Sunil N",
            "b": "21/11/2022",
            "c": "21/11/2022",
            "d": "S"
        },
}]

i want result like below
[{
{
            "a": "Rajesh Tamore",
            "b": "23/11/2022",
            "c": "23/11/2022",
        },
        {
            "a": "Sunil N",
            "b": "21/11/2022",
            "c": "21/11/2022",
        },
}]

i had tries below code

 palistarray.find((item,index) => {
    console.log(item[filterkey[index]]);
  });

Answer 1

Try using the Array.prototype.map() , Object.keys() and Object.prototype.hasOwnProperty() functions like this:

const result = palistarray.map((obj) => {
    const newObj = {};
    Object.keys(obj).forEach((key) => {
        if (filterkey.includes(key) && obj.hasOwnProperty(key)) {
            newObj[key] = obj[key];
        }
    });
    return newObj;
});

Answer 2

You can write your own function, like this:

 const filterkey = ['a', 'b', 'c'] const palistarray = [ { 'Id': 199, 'a': 'Rajesh Tamore', 'b': '23/11/2022', 'c': '23/11/2022', 'd': 'W', }, { 'Id': 200, 'a': 'Sunil N', 'b': '21/11/2022', 'c': '21/11/2022', 'd': 'S', }, ] const filterBy = (array, predicate) => array.map(value => { const result = {} predicate.forEach(key => { if (value[key]) { result[key] = value[key] } }) return result }) const result = filterBy(palistarray, filterkey) console.log(result)

Best regards!

Answer 3

I have to presume your array should be this, without the extra curly braces:

var palistarray = [{

            "Id": 199,
            "a": "Rajesh Tamore",
            "b": "23/11/2022",
            "c": "23/11/2022",
            "d": "W"
        },
        {
            "Id": 200,
            "a": "Sunil N",
            "b": "21/11/2022",
            "c": "21/11/2022",
            "d": "S"
       },
];

A really simple way would be this:

 const filterArray = ["a", "b", "c"]; const palistarray = [{ "Id": 199, "a": "Rajesh Tamore", "b": "23/11/2022", "c": "23/11/2022", "d": "W" }, { "Id": 200, "a": "Sunil N", "b": "21/11/2022", "c": "21/11/2022", "d": "S" }, ]; const mapped = palistarray.map(item => { const data = {}; filterArray.forEach(key => { data[key] = item[key]; }) return data; }); console.log(mapped);

It's just a case of mapping and returning the specified keys from the objects