Map.prototype.entries()

The entries() method returns a new Iterator object that contains the [key, value] pairs for each element in the Map object in insertion order. In this particular case, this iterator object is also an iterable, so the for-of loop can be used. When the protocol [Symbol.iterator] is used, it returns a function that, when invoked, returns this iterator itself.

Syntax

entries()

Return value

A new Map iterator object.

Examples

Using entries()

let myMap = new Map()
myMap.set('0', 'foo')
myMap.set(1, 'bar')
myMap.set({}, 'baz')

let 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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
entries
38
12
20
No
25
8
38
38
20
25
8
3.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/entries