Set.prototype.keys()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It's been available across browsers since July 2015.

The keys() method of Set instances is an alias for the values() method.

Syntax

keys()

Parameters

None.

Return value

A new iterable iterator object.

Examples

Using keys()

The keys() method is exactly equivalent to the values() method.

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"

Specifications

Specification
ECMAScript® 2027 Language Specification # sec-set.prototype.keys

Browser compatibility

	Desktop					Mobile							Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS	Bun	Deno	Node.js
`keys`	38	12	24	25	8	38	24	25	8	3.0	38	8	1.0.0	1.0	0.12.0