Set.prototype.entries()

The entries() method of {{jsxref("Set")}} instances returns a new set iterator object that contains an array of [value, value] for each element in this set, in insertion order. For Set objects there is no key like in Map objects. However, to keep the API similar to the Map object, each entry has the same value for its key and value here, so that an array [value, value] is returned.

{{InteractiveExample("JavaScript Demo: Set.prototype.entries()")}}

```js interactive-example const set = new Set(); set.add(42); set.add("forty two");

const iterator = set.entries();

for (const entry of iterator) { console.log(entry); // Expected output: Array [42, 42] // Expected output: Array ["forty two", "forty two"] }

## Syntax

```js-nolint
entries()

Parameters#

None.

Return value#

A new iterable iterator object.

Examples#

Using entries()#

const mySet = new Set();
mySet.add("foobar");
mySet.add(1);
mySet.add("baz");

const setIter = mySet.entries();

console.log(setIter.next().value); // ["foobar", "foobar"]
console.log(setIter.next().value); // [1, 1]
console.log(setIter.next().value); // ["baz", "baz"]

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Set.prototype.keys()")}}
• {{jsxref("Set.prototype.values()")}}