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.
La méthode entries()
renvoie un nouvel objet de type Array Iterator
qui contient le couple clef/valeur pour chaque éléments du tableau.
Exemple interactif
const array1 = ["a", "b", "c"];
const iterator1 = array1.entries();
console.log(iterator1.next().value);
// Expected output: Array [0, "a"]
console.log(iterator1.next().value);
// Expected output: Array [1, "b"]
Syntaxe
js
arr.entries();
Valeur de retour
Un nouvel objet qui est un itérateur pour Array
.
Exemples
Parcourir un tableau avec ses index et éléments
js
const arr = ["a", "b", "c"];
for (const [index, element] of arr.entries()) {
console.log(index, element);
}
// 0 "a"
// 1 "b"
// 2 "c"
Boucle for...of
On peut avoir le même résultat en utilisant une boucle 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']
Spécifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-array.prototype.entries |
Compatibilité des navigateurs
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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entries |
Legend
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- Full support
- Full support
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