Set.prototype.intersection()
Baseline
2024
Newly available
Since 2024 6, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
Set intersection() .
In this article
js
intersection(other)
other Set .
(intersection) .
AB={xAxB}A\cap B = {x\in A\mid x\in B}.
![[ . A B .]](https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Set/intersection/diagram.svg){kind=link}
intersection() other . this Set this . this other .
intersection() this other . this other .
intersection()
(<10) (<10) . .
js
const odds = new Set([1, 3, 5, 7, 9]);
const squares = new Set([1, 4, 9]);
console.log(odds.intersection(squares)); // Set(2) { 1, 9 }
| Specification |
|---|
| ECMAScript 2027 LanguageSpecification # sec-set.prototype.intersection |