Array : mthode entries()

const array = ["a", "b", "c"];

const iterator = array.entries();

console.log(iterator.next().value);
// Sortie attendue : Array [0, "a"]

console.log(iterator.next().value);
// Sortie attendue : Array [1, "b"]

entries()

const arr = ["a", "b", "c"];

for (const [index, element] of arr.entries()) {
  console.log(index, element);
}

// 0 "a"
// 1 "b"
// 2 "c"

const array = ["a", "b", "c"];
const arrayEntries = array.entries();

for (const element of arrayEntries) {
  console.log(element);
}

// [0, 'a']
// [1, 'b']
// [2, 'c']

for (const element of [, "a"].entries()) {
  console.log(element);
}
// [0, undefined]
// [1, 'a']

const objetSimilaireTableau = {
  length: 3,
  0: "a",
  1: "b",
  2: "c",
  3: "d", // ignor par entries() car length vaut 3
};
for (const entry of Array.prototype.entries.call(objetSimilaireTableau)) {
  console.log(entry);
}
// [ 0, 'a' ]
// [ 1, 'b' ]
// [ 2, 'c' ]