File size: 1,483 Bytes
780c9fe |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 |
---
title: Map.prototype.entries()
short-title: entries()
slug: Web/JavaScript/Reference/Global_Objects/Map/entries
page-type: javascript-instance-method
browser-compat: javascript.builtins.Map.entries
sidebar: jsref
---
The **`entries()`** method of {{jsxref("Map")}} instances returns a new _[map iterator](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Iterator)_ object that contains the `[key, value]` pairs for each element in this map in insertion order.
{{InteractiveExample("JavaScript Demo: Map.prototype.entries()")}}
```js interactive-example
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-nolint
entries()
```
### Parameters
None.
### Return value
A new [iterable iterator object](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Iterator).
## 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
{{Specifications}}
## Browser compatibility
{{Compat}}
## See also
- {{jsxref("Map.prototype.keys()")}}
- {{jsxref("Map.prototype.values()")}}
|