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Baseline Widely available
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This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The entries() method of Map instances returns a new map iterator object that contains the [key, value] pairs for each element in this map in insertion order.
Try it
const map = new Map();
map.set("0", "foo");
map.set(1, "bar");
const iterator = map.entries();
console.log(iterator.next().value);
// Expected output: Array ["0", "foo"]
console.log(iterator.next().value);
// Expected output: Array [1, "bar"]
Syntax
js
entries()
Parameters
None.
Return value
A new iterable iterator object.
Examples
Using entries()
js
const myMap = new Map();
myMap.set("0", "foo");
myMap.set(1, "bar");
myMap.set({}, "baz");
const mapIter = myMap.entries();
console.log(mapIter.next().value); // ["0", "foo"]
console.log(mapIter.next().value); // [1, "bar"]
console.log(mapIter.next().value); // [Object, "baz"]
Specifications
| Specification |
|---|
| ECMAScript? 2026 Language?Specification # sec-map.prototype.entries |