Question

How to create a set of objects in JavaScript

Answer 1

const objectsArray = [
  { id: 1, name: 'Object 1' },
  { id: 2, name: 'Object 2' },
  { id: 3, name: 'Object 3' }
];

console.log(objectsArray);



/*
run:

[
  { id: 1, name: 'Object 1' },
  { id: 2, name: 'Object 2' },
  { id: 3, name: 'Object 3' }
]

*/

 

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Answer 2

const obj1 = { id: 1, name: 'Object 1' };
const obj2 = { id: 2, name: 'Object 2' };
const obj3 = { id: 3, name: 'Object 3' };

const objectsSet = new Set([obj1, obj2, obj3]);

console.log(objectsSet);



/*
run:

Set(3) {
  { id: 1, name: 'Object 1' },
  { id: 2, name: 'Object 2' },
  { id: 3, name: 'Object 3' }
}

*/

 

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Answer 3

const objectsMap = new Map();

objectsMap.set(1, { id: 1, name: 'Object 1' });
objectsMap.set(2, { id: 2, name: 'Object 2' });
objectsMap.set(3, { id: 3, name: 'Object 3' });

console.log(objectsMap);



/*
run:

Map(3) {
  1 => { id: 1, name: 'Object 1' },
  2 => { id: 2, name: 'Object 2' },
  3 => { id: 3, name: 'Object 3' }
}

*/

 

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