How To Get Unique Object From Array Using JavaScript

In this article, we will learn how to get a unique object from an array.

Suppose you have an object named players like shown below in an image:

const Players = [
    { id: 1, name: 'Kohli'},
    { id: 2, name: 'Rohit'},
    { id: 3, name: 'Dhoni'},
    { id: 1, name: 'Kohli'},
    { id: 2, name: 'Rohit'},
    { id: 1, name: 'Kohli'},
    { id: 2, name: 'Rohit'}
  ];

And you want to get unique values of the id attribute of each item from the array.

Here’s how you can get the unique list by key:

const key = 'id'; // set key to get unique list

const unique = [...new Map(Players.map(item =>
  [item[key], item])).values()];

console.log(unique);

Here you get a unique object list by filtering the key.

Hope this article helps you. Thanks for reading.