new Set()
constructor to create a new Set
object from each iterable.Array.prototype.every()
and Set.prototype.has()
to check that the two iterables have no common values.const isDisjoint = (a, b) => {
const sA = new Set(a), sB = new Set(b);
return [...sA].every(v => !sB.has(v));
};
isDisjoint(new Set([1, 2]), new Set([3, 4])); // true isDisjoint(new Set([1, 2]), new Set([1, 3])); // false
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