Array.prototype.entries()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since May 2018.
O método entries() retorna um novo objeto Array Iterator que contém os pares chave/valor para cada índice no array.
Sintaxe
arr.entries()
Exemplos
js
var arr = ["a", "b", "c"];
var eArr = arr.entries();
console.log(eArr.next().value); // [0, 'a']
console.log(eArr.next().value); // [1, 'b']
console.log(eArr.next().value); // [2, 'c']
O mesmo que acima, utilizando um loop for…of
js
var arr = ["a", "b", "c"];
var eArr = arr.entries();
for (let e of eArr) {
console.log(e);
}
// [0, 'a']
// [1, 'b']
// [2, 'c']
Especificações
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-array.prototype.entries |