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Rename keys in an array of objects using JavaScript

I have an array of country objects. In this array I would like to replace the key name with country.

const countries = [
    {"id": 1, "name": "Afghanistan"},
    {"id": 2, "name": "Albania"},
    {"id": 3, "name": "Algeria"},
    {"id": 4, "name": "American Samoa"}
];

We can use map function to manipulate the array easily.

const transformed = countries.map(function(country) {
country.country = country.name;
delete country.name;
    return country;
})
console.log(transformed);

/* const countries = [
    {"id": 1, "country": "Afghanistan"},
    {"id": 2, "country": "Albania"},
    {"id": 3, "country": "Algeria"},
    {"id": 4, "country": "American Samoa"}
];
*/

See also  Timing events in JavaScript

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