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.
Syntax
entries()
Parameters
None.
Return value
A new iterable iterator object.
Examples
Using entries()
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"]