What are set operations in JavaScript?

What are set operations in JavaScript?

Set operations in JavaScript refer to methods for manipulating sets, such as union, intersection, and difference.

Can you give me an example of how to perform a union operation?

Sure! You can use the Set object to create sets and then combine them using the spread operator. For example:

const setA = new Set([1, 2, 3]);
const setB = new Set([3, 4, 5]);
const union = new Set([...setA, ...setB]);
console.log(union); // Set { 1, 2, 3, 4, 5 }

What about the intersection operation?

For intersection, you can filter the elements of one set based on the presence in another set. Here's an example:

const intersection = new Set([...setA].filter(x => setB.has(x)));
console.log(intersection); // Set { 3 }