array of oject make unque code example
Example 1: unique array javascript es6 Map
const data = [
{ group: 'A', name: 'SD' },
{ group: 'B', name: 'FI' },
{ group: 'A', name: 'MM' },
{ group: 'B', name: 'CO'}
];
const unique = [...new Set(data.map(item => item.group))]; // [ 'A', 'B']
Example 2: javascript get unique values from key
const unique = [...new Set(array.map(item => item.age))];