Array.prototype.entries()

Metoda entries() zwraca obiekt Iteratora który zawiera parę klucz/wartość dla każdej pozycji w tablicy.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

a.entries()

Nowy iterator Tablicy.

var a = ['a', 'b', 'c'];
var iterator = a.entries();

for (let e of iterator) {
  console.log(e);
}
// [0, 'a']
// [1, 'b']
// [2, 'c']

• Array.prototype.keys()
• Array.prototype.values()
• Array.prototype.forEach()
• Array.prototype.every()
• Array.prototype.some()
• for...of
• Iteration protocols