JavaScript Program to Illustrate Different Set Operations

// perform union operation
// contain elements of both sets
function union(a, b) {
    let unionSet = new Set(a);
    for (let i of b) {
        unionSet.add(i);
    }
    return unionSet
}

// two sets of fruits
const setA = new Set(['apple', 'mango', 'orange']);
const setB = new Set(['grapes', 'apple', 'banana']);

const result = union(setA, setB);

console.log(result);

Output

Set {"apple", "mango", "orange", "grapes", "banana"}