Some JavaScript memo

getUniqueItem.js

const obj = [
	{ name: "Joe", age: 17 },
	{ name: "Bob", age: 17 },
	{ name: "Carl", age: 35 }
];

const objRes = [...new Map(obj.map((item) => [item.age, item])).values()];
const arrRes = [...new Set(obj.map((item) => item.age))]
console.log(objRes); //[{ name: "Bob", age: 17 },{ name: "Carl", age: 35 }]
console.log(arrRes);//[17, 35]