js
difference(other)
Set Set other
(difference)
AB={xAxB}A\setminus B = \{x\in A\mid x\notin B\}
![[2 A B A B ]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/difference/diagram.svg){kind=link}
difference() Set other this this Set this other
Set this
difference()
10 10
js
const odds = new Set([1, 3, 5, 7, 9]);
const squares = new Set([1, 4, 9]);
console.log(odds.difference(squares)); // Set(3) { 3, 5, 7 }
| ECMAScript 2027 LanguageSpecification # sec-set.prototype.difference |