Pluck Unique Values from Array of Javascript Objects

pluck-unique-values-from-array-of-javascript-objects.md

Pluck Unique Values from Array of Javascript Objects

Implementation

const pluck = key => array => Array.from(new Set(array.map(obj => obj[key])));

Usage

const cars = [
  { brand: 'Audi', color: 'black' },
  { brand: 'Audi', color: 'white' },
  { brand: 'Ferarri', color: 'red' },
  { brand: 'Ford', color: 'white' },
  { brand: 'Peugot', color: 'white' }
];

const getBrands = pluck('brand');

console.log(getBrands(cars));

Output

[
  "Audi",
  "Ferarri",
  "Ford",
  "Peugot"
]