MDN Blog·2yNew JavaScript Set methods
New JavaScript Set methods such as intersection, union, difference, symmetricDifference, isSubsetOf, isSupersetOf, and isDisjointFrom have become available across most major browser engines without the need for polyfills. These methods facilitate various set operations, making it easier to perform operations like finding common elements, combining sets, and checking subset or superset relationships. Sets in JavaScript offer advantages for unique collections and performance improvements over arrays when dealing with larger datasets.
