Set.prototype.isDisjointFrom()

2024

20246

Set isDisjointFrom()

isDisjointFrom(other)

other: Set

other true false

A B AB=A\text{ }B \text{ } \Leftrightarrow A\cap B = \empty

A B [ A B ]

isDisjointFrom() other this Set this this other

this other.size other keys() other other this false keys() return() true
this e other.has(e) false true

isDisjointFrom() this other

isDisjointFrom()

20 20 1

const primes = new Set([2, 3, 5, 7, 11, 13, 17, 19]);
const squares = new Set([1, 4, 9, 16]);
console.log(primes.isDisjointFrom(squares)); // true

20 20 1

const composites = new Set([4, 6, 8, 9, 10, 12, 14, 15, 16, 18]);
const squares = new Set([1, 4, 9, 16]);
console.log(composites.isDisjointFrom(squares)); // false


ECMAScript 2027 LanguageSpecification # sec-set.prototype.isdisjointfrom

core-js Set.prototype.isDisjointFrom polyfill
Set.prototype.difference()
Set.prototype.intersection()
Set.prototype.isSubsetOf()
Set.prototype.isSupersetOf()
Set.prototype.symmetricDifference()
Set.prototype.union()

MDN

2026526 MDN

GitHub

JavaScript
Set
1. Set()
1. Set[Symbol.species]
1. Set.prototype.size
Object/Function
1. Object.prototype.__proto__
2. Object.prototype.constructor