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Showing content from https://developer.cdn.mozilla.net/ko/docs/Web/JavaScript/Reference/Global_Objects/Set/keys below:

Set.prototype.keys() - JavaScript | MDN

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Set 인스턴스의 keys() 메서드는 values() 메서드의 별칭입니다.

없음.

새로운 순회 가능한 반복자 객체.

keys() 메서드는 values()와 완벽하게 동일합니다.

const mySet = new Set();
mySet.add("foo");
mySet.add("bar");
mySet.add("baz");

const setIter = mySet.keys();

console.log(setIter.next().value); // "foo"
console.log(setIter.next().value); // "bar"
console.log(setIter.next().value); // "baz"

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